Positioning aid for tensile test of shaft shoulder specimen

Abstract

This utility model discloses a positioning aid for tensile testing of a shoulder specimen, including a pull rod. One end of the pull rod is fixedly connected to a connector. A sample rod is combined and connected to one side of the connector. Both ends of the sample rod are fixedly connected to combined heads, which are tightly connected to the side of the connector. A semi-cylindrical aid is fixedly sleeved at the ends of the pull rod and the sample rod. Magnet blocks are fixedly connected to both ends of the side of the semi-cylindrical aid. The interior of the semi-cylindrical aid has a sleeve cavity that snaps into the surfaces of the connector and the combined heads. Both ends of the sleeve cavity have snap-fit ​​side plates. One side of the snap-fit ​​side plate has a semi-circular clearance hole that snaps into one end surface of the pull rod and the connector. The outer surface of the semi-cylindrical aid has an annular groove in the middle to prevent it from falling off, facilitating subsequent snap-fit ​​installation. It is highly adaptable, easy to combine, stable, and efficient.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing of specimens, and more specifically, to a positioning aid for tensile testing of shoulder specimens. Background Technology

[0002] Creep is the slow and permanent movement or deformation tendency of a solid material under stress. It is the most commonly used test method to evaluate the high-temperature and long-term performance of alloy materials, and it is also an important basis for the design and material selection of high-temperature components. In the creep endurance tensile test, a clamp is used to hold the specimen on the creep testing machine.

[0003] The auxiliary tie rod is T-shaped and has a limit structure on only one end. It is particularly inconvenient to install the sample when used as a pull rod. Furthermore, after the sample is pulled apart, the fixed sleeve of the entire shoulder tensioning auxiliary fixture will separate from the upper / lower clamp due to vibration and other reasons, and fall onto the equipment workbench or the ground, which is not conducive to the next test. It needs to be improved. Utility Model Content

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a positioning auxiliary for tensile testing of shoulder specimens. By installing the specimen rod and the combined head through the joint of the pull rod, the test can be carried out from both ends. Two semi-cylindrical auxiliary parts are snapped into the end positions, and the locking screws installed in the limiting cylinder can be used to snap and fix them in place. This is safe and stable, and it is easy to separate quickly after the test without falling off. It is convenient for the next snap-fit ​​installation, has high adaptability, is easy to use in combination, and is stable and efficient.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A positioning aid for tensile testing of a shoulder specimen includes a pull rod, one end of which is fixedly connected to a connector. A specimen rod is combined and connected to one side of the connector. Both ends of the specimen rod are fixedly connected to combined heads, which are tightly connected to the side of the connector. A semi-cylindrical aid is fixedly sleeved at the ends of the pull rod and the specimen rod. Magnet blocks are fixedly connected to both ends of the side of the semi-cylindrical aid. The interior of the semi-cylindrical aid has a sleeve cavity that engages with the surfaces of the connector and the combined heads. Both ends of the sleeve cavity have snap-fit ​​side plates. One side of the snap-fit ​​side plate has a semi-circular clearance hole that engages with one end surface of the pull rod and the connector. An annular groove is provided in the middle of the outer surface of the semi-cylindrical aid. A limiting sleeve is fixedly sleeved on the outer side of the semi-cylindrical aid. A tightening screw is threaded onto the surface of the limiting sleeve and is tightly connected to the interior of the annular groove.

[0007] Furthermore, one end of the outer surface of the pull rod is provided with an external thread, and a positioning nut is installed on the surface thread of the external thread.

[0008] Furthermore, one end of the positioning nut is provided with an adjustment notch, and the other side of the positioning nut is located at the end of the semi-cylindrical accessory.

[0009] Furthermore, a combination plate is fixedly connected to one end of the positioning nut, and a connecting rod is fixedly connected to one side of the combination plate. The connecting rod is fixedly connected to one end surface of the limiting cylinder. The positioning nut is installed by the external thread at the upper end of the pull rod. Combined with the installation of the combination plate and the connecting rod, it can be threaded and fixed, thereby providing auxiliary support for the limiting cylinder. When disassembling, the position can be adjusted by rotating the thread and sliding, avoiding interference. It is efficient, stable, and highly adaptable.

[0010] Furthermore, there are two pull rods, which are symmetrically connected to the two ends of the template rod.

[0011] Furthermore, the semi-cylindrical accessory has four parts, which are respectively snapped onto both ends of the template rod.

[0012] Furthermore, there are at least four tightening screws, which are evenly distributed on the outer surface of the limiting cylinder. The symmetrical connection of the tie rod and the semi-cylindrical auxiliary tool facilitates the combination and positioning, and makes it convenient to perform tensile tests after connecting from both ends, thus exhibiting high adaptability.

[0013] Compared with existing technologies, the advantages of this utility model are: (1) This scheme uses the joint of the tie rod to install the sample rod and the combination head, which can be stretched from both ends to conduct the test. The two semi-cylindrical accessories are snapped at the end position, and the tightening screws are installed in combination with the limit cylinder. They can be snapped and fixed after being sleeved, which is safe and stable. After the test, it is easy to separate quickly and will not fall off. It is convenient to snap and install next time. It has high adaptability, is easy to use in combination, and is stable and efficient.

[0014] (2) The positioning nut is installed by the external thread of the upper end of the pull rod, and the connecting rod is installed by the combination plate. It can be fixed by thread installation, thereby providing auxiliary support for the limit cylinder. When disassembling, the position can be adjusted by rotating the thread and sliding to avoid interference. It is efficient, stable and highly adaptable.

[0015] (3) By symmetrically connecting the tie rod and the semi-cylindrical fixture, it is easy to combine and snap-fit ​​for positioning, and it is convenient to conduct tensile tests after connecting from both ends, which has high adaptability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the planar structure cross-section of this utility model; Figure 3 This is a partial structural diagram of the limiting cylinder connection of this utility model; Figure 4 This is a partial cross-sectional view of the positioning nut connection of this utility model; Figure 5 This is a schematic diagram of the structure of the semi-cylindrical auxiliary tool of this utility model.

[0017] Explanation of the labels in the diagram: 1. Pull rod, 11. Connector, 12. Template rod, 13. Combination head, 14. Semi-cylindrical accessory, 15. Magnet block, 16. Sleeve cavity, 17. Snap-fit ​​side plate, 18. Semi-circular clearance hole, 19. Annular groove, 2. Limiting cylinder, 21. Tightening screw, 22. External thread, 23. Positioning nut, 24. Adjustment notch, 25. Combination disc, 26. Connecting rod. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 , Figure 3 and Figure 5A positioning aid for a shoulder specimen under tensile testing includes a pull rod 1. One end of the pull rod 1 is fixedly connected to a connector 11. A specimen rod 12 is connected to one side of the connector 11. Both ends of the specimen rod 12 are fixedly connected to assembly heads 13, which are tightly connected to the sides of the connector 11. A semi-cylindrical aid 14 is fixedly sleeved on the ends of the pull rod 1 and the specimen rod 12. Magnet blocks 15 are fixedly connected to both ends of the sides of the semi-cylindrical aid 14. The magnet blocks 15 on both sides can assist in adsorption and positioning, facilitating the adsorption and positioning of the two semi-cylindrical aids 14. This facilitates the sleeved positioning, prevents direct drop, and ensures stability. Tightening and positioning ensures safety and stability during tensile testing. The semi-cylindrical aid 14 has a sleeve cavity 16 inside, which is snapped onto the surfaces of the connector 11 and the assembly head 13. Both ends of the sleeve cavity 16 have snap-fit ​​side plates. 17. A semi-circular clearance hole 18 is provided on one side of the snap-fit ​​side plate 17. The semi-circular clearance hole 18 is snapped onto one end surface of the pull rod 1 and the butt joint 11. An annular groove 19 is provided in the middle of the outer surface of the semi-circular auxiliary tool 14. A limiting sleeve 2 is fixedly sleeved on the outer side of the semi-circular auxiliary tool 14. A tightening screw 21 is threaded on the surface of the limiting sleeve 2. The tightening screw 21 is tightened and connected to the inside of the annular groove 19. The pull rod 1 is fixed to the tensile testing equipment. Then the sample rod 12 is installed. The semi-circular auxiliary tool 14 is snapped onto the butt joint 11 and the combination head 13 respectively. It is snapped and fixed with the sleeve cavity 16. The semi-circular clearance hole 18 can avoid the gap, which is conducive to the snap-fit ​​fixation after the separate connection. Then the limiting sleeve 2 is installed. Then the tightening screw 21 is screwed and locked into the inside of the annular groove 19, which can tighten the two semi-circular auxiliary tools 14, ensure the stability of the snap-fit, facilitate the operation of the tensile test.

[0020] Please see Figure 1 , Figure 2 and Figure 4One end of the outer surface of the pull rod 1 is provided with an external thread 22. A positioning nut 23 is threaded onto the surface of the external thread 22. One end of the positioning nut 23 is provided with an adjustment notch 24. The other side of the positioning nut 23 is located at the end of the semi-cylindrical auxiliary tool 14. A combination plate 25 is fixedly connected to one end of the positioning nut 23. A connecting rod 26 is fixedly connected to one side of the combination plate 25. The connecting rod 26 is fixedly connected to one end surface of the limiting cylinder 2. By installing the positioning nut through the external thread at the upper end of the pull rod, combined with the installation of the combination plate and connecting rod, the threaded installation can be fixed, thereby providing auxiliary support for the limiting cylinder. When disassembling, the position can be adjusted by rotating the thread and sliding, avoiding interference. It is efficient, stable, and highly adaptable. The positioning nut 23 can be threaded onto the external thread 22 to lock and fix the position. Combined with the connecting rod 26 connected to the combination plate 25, it can support and position the limiting cylinder 2. Combined with the tightening screw 21 on the surface, it can tighten the two semi-cylindrical accessories 14. It can be snapped onto the combination head 13 and the butt joint 11, which is conducive to stable positioning and convenient for tensile testing. After the test, the tightening screw 21 can be loosened to separate the semi-cylindrical accessories 14 on both sides and increase the distance. Then, the positioning nut 23 can be rotated, and the limiting cylinder 2 can be slid laterally onto the pull rod 1 for convenient and quick separation, avoiding interference, stability and efficiency, and convenient for re-snagging the sample rod 12 for multiple sets of tests, which is conducive to adjustment and use.

[0021] Please see Figure 1 , Figure 2 and Figure 3 There are two pull rods 1, which are symmetrically connected to the two ends of the sample rod 12. There are four semi-cylindrical accessories 14, which are respectively snapped into the two ends of the sample rod 12. There are at least four tightening screws 21, which are evenly distributed on the outer surface of the limiting cylinder 2. By symmetrically connecting the pull rods and semi-cylindrical accessories, it is easy to combine and snap into positioning, and it is convenient to perform tensile tests after connecting from both ends. It has high adaptability.

[0022] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A positioning aid for tensile testing of a shoulder specimen, comprising a pull rod (1), one end of which is fixedly connected to a connector (11), and a specimen rod (12) is combined and connected to one side of the connector (11), characterized in that: Both ends of the template rod (12) are fixedly connected to a combination head (13). The combination head (13) is tightly connected to the side of the connector (11). The ends of the pull rod (1) and the template rod (12) are fixedly sleeved with a semi-cylindrical auxiliary tool (14). Magnet blocks (15) are fixedly connected to both ends of the side of the semi-cylindrical auxiliary tool (14). The interior of the semi-cylindrical auxiliary tool (14) is provided with a sleeve cavity (16). The sleeve cavity (16) is snapped onto the surface of the connector (11) and the combination head (13). 6) has snap-fit ​​side plates (17) at both ends. One side of the snap-fit ​​side plate (17) has a semi-circular clearance hole (18). The semi-circular clearance hole (18) is snapped onto one end surface of the pull rod (1) and the connector (11). The outer surface of the semi-circular auxiliary tool (14) has an annular groove (19) in the middle. The outer side of the semi-circular auxiliary tool (14) is fixedly sleeved with a limiting sleeve (2). The surface of the limiting sleeve (2) is threaded with a tightening screw (21). The tightening screw (21) is tightened and connected to the inside of the annular groove (19).

2. The positioning fixture for tensile testing of a shoulder specimen according to claim 1, characterized in that: The outer surface of the pull rod (1) is provided with an external thread (22) at one end, and a positioning nut (23) is installed on the surface thread of the external thread (22).

3. The positioning fixture for tensile testing of a shoulder specimen according to claim 2, characterized in that: The positioning nut (23) has an adjustment notch (24) on one end surface, and the other side of the positioning nut (23) is located at the end of the semi-cylindrical auxiliary tool (14).

4. The positioning fixture for tensile testing of a shoulder specimen according to claim 2, characterized in that: One end of the positioning nut (23) is fixedly connected to the combination plate (25), and one side of the combination plate (25) is fixedly connected to the connecting rod (26), which is fixedly connected to one end surface of the limiting cylinder (2).

5. A positioning fixture for tensile testing of a shoulder specimen according to claim 1, characterized in that: There are two pull rods (1), which are symmetrically connected to the two ends of the template rod (12).

6. A positioning fixture for tensile testing of a shoulder specimen according to claim 1, characterized in that: There are four semi-cylindrical accessories (14), which are respectively snapped into the two ends of the template rod (12).

7. A positioning fixture for tensile testing of a shoulder specimen according to claim 1, characterized in that: There are at least four tightening screws (21), which are evenly distributed on the outer surface of the limiting cylinder (2).

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