A clamping fixture suitable for high-temperature stretching

Abstract

This utility model discloses a clamping fixture suitable for high-temperature tensile testing, relating to the field of tensile equipment technology. It includes an environmental chamber body and a threaded round bar. Hydraulic telescopic rods are installed on the inner walls of both the upper and lower ends of the environmental chamber body via tension sensors. Connecting blocks are connected to opposite ends of the two hydraulic telescopic rods, and tie rod structures are connected to both connecting blocks. Each tie rod structure has a slot, into which a clamp head is inserted. The clamp head has threaded holes, and both ends of the threaded round bar are screwed into the two threaded holes respectively. In this utility model, the clamp head is installed and removed through the insertion and engagement of the clamp head and the slot, allowing for the loading and unloading of the threaded round bar outside the environmental chamber body. By loading and unloading the clamp head and sample as a whole inside the environmental chamber body, the purpose of conducting high-temperature tensile tests can be achieved quickly and safely, significantly reducing the operation time inside the environmental chamber body, thereby reducing temperature loss and greatly improving testing efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of stretching equipment technology, and in particular to a clamping fixture suitable for high-temperature stretching. Background Technology

[0002] The 5585H tensile testing machine, with a maximum load of 250kN, is equipped with an environmental chamber and is suitable for high-temperature tensile testing below 350℃. Due to the limited size of the environmental chamber, a small wedge clamp is installed inside for holding round bar and slab tensile specimens. After years of use, the clamp has suffered severe wear. Furthermore, high-temperature tensile testing requires manual rotation of the wedge clamp inside the environmental chamber to secure the specimen, which is time-consuming, labor-intensive, and poses a risk of burns from the high temperature. The matching clamp pins and top plate wear out quickly and require frequent maintenance and replacement, resulting in high costs. Therefore, a clamping fixture suitable for high-temperature tensile testing is provided. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a clamping fixture suitable for high-temperature tensile testing. Through the insertion and engagement of the clamp head and the clamp slot, the clamp head can be installed and removed, allowing for the loading and unloading of threaded round bars outside the environmental chamber body. By loading and unloading the clamp head and sample as a whole within the environmental chamber body, the high-temperature tensile testing can be carried out quickly and safely, significantly reducing the operation time within the environmental chamber body, thereby minimizing temperature loss and greatly improving testing efficiency and safety, overcoming the deficiencies of existing technologies.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A clamping fixture suitable for high-temperature stretching includes an environmental chamber body and a threaded round bar. The inner walls of the upper and lower ends of the environmental chamber body are equipped with hydraulic telescopic rods installed through tension sensors. Each of the two hydraulic telescopic rods has a connecting block at one end. Each of the two connecting blocks has a pull rod structure. Each of the two pull rod structures has a slot, and a clamp head is inserted into the slot. The clamp head has a threaded hole. The two ends of the threaded round bar are screwed into the two threaded holes respectively.

[0006] As a further embodiment of this utility model: the pull rod structure includes a rod body, one end of which is provided with a plug-in part, and the other end of which is provided with a snap-fit ​​part.

[0007] As a further embodiment of this utility model: the connecting block is provided with a plug hole, the connecting block is provided with a first positioning hole perpendicular to the plug hole, the plug part is provided with a second positioning hole communicating with the first positioning hole, and a connecting pin is inserted into the first positioning hole and the second positioning hole.

[0008] As a further improvement of this utility model, the slot is formed on the snap-fit ​​part.

[0009] As a further improvement of this utility model, both the card slot and the card head are T-shaped.

[0010] As a further improvement of this utility model, supports are provided on both sides of the lower end of the environmental chamber body.

[0011] As a further improvement of this utility model: the main body of the environmental chamber is provided with a door on the open side, and an observation window is provided on the door.

[0012] The beneficial effects of this utility model are as follows:

[0013] The clamp head is installed and removed by inserting and connecting with the clamp slot, allowing for the loading and unloading of threaded round bars outside the environmental chamber. By loading and unloading the clamp head and sample as a whole inside the environmental chamber, high-temperature tensile testing can be carried out quickly and safely, significantly reducing the operation time inside the environmental chamber, thereby reducing temperature loss and greatly improving testing efficiency and safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a clamping fixture suitable for high-temperature stretching proposed in this utility model.

[0015] Figure 2 This is a partial structural diagram of a clamping fixture suitable for high-temperature stretching proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the second partial structure of a clamping fixture suitable for high-temperature stretching proposed in this utility model.

[0017] Figure 4 This utility model proposes a clamping fixture suitable for high-temperature stretching. Figure 1 A magnified structural diagram of point A in the middle.

[0018] In the diagram: 1. Environmental chamber body; 2. Support; 3. Tension sensor; 4. Hydraulic telescopic rod; 5. Chamber door; 6. Rod body; 7. Threaded round bar; 8. Second positioning hole; 9. Connecting block; 10. Insertion hole; 11. First positioning hole; 12. Insertion part; 13. Snap-fit ​​part; 14. Slot; 15. Clip head; 16. Threaded hole; 17. Connecting pin. Detailed Implementation

[0019] 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.

[0020] Example 1, referring to Figure 1-4A clamping fixture suitable for high-temperature stretching includes an environmental chamber body 1 and a threaded round bar 7. Supports 2 are provided on both sides of the lower end of the environmental chamber body 1. A door 5 is provided on the open side of the environmental chamber body 1. An observation window is provided on the door 5. Hydraulic telescopic rods 4 are installed on the inner walls of the upper and lower ends of the environmental chamber body 1 through tension sensors 3. Connecting blocks 9 are connected to the opposite ends of the two hydraulic telescopic rods 4. Pull rod structures are connected to the two connecting blocks 9. The two pull rod structures are provided with slots 14. A clamp head 15 is inserted into the slot 14. The clamp head 15 is provided with threaded holes 16. The two ends of the threaded round bar 7 are screwed into the two threaded holes 16 respectively.

[0021] The pull rod structure includes a rod body 6, one end of which is provided with a plug-in part 12, and the other end of which is provided with a snap-fit ​​part 13. A slot 14 is formed on the snap-fit ​​part 13, and both the slot 14 and the snap head 15 are T-shaped.

[0022] The clamp 15 is installed and removed by interlocking with the slot 14, allowing for the loading and unloading of the threaded round bar 7 outside the environmental chamber body 1. By loading and unloading the clamp 15 and the sample as a whole inside the environmental chamber body 1, the high-temperature tensile test can be carried out quickly and safely, significantly reducing the operation time inside the environmental chamber body 1, thereby reducing temperature loss and greatly improving test efficiency and safety.

[0023] Example 2 is an optimization based on Example 1. Specifically, the connecting block 9 is provided with a plug hole 10, and the connecting block 9 is provided with a first positioning hole 11 perpendicular to the plug hole 10. The plug part 12 is provided with a second positioning hole 8 communicating with the first positioning hole 11. A connecting pin 17 is inserted into the first positioning hole 11 and the second positioning hole 8.

[0024] The plug part 12 is inserted into the plug hole 10 of the connecting block 9, so that the first positioning hole 11 communicates with the second positioning hole 8, and the connecting pin 17 is inserted at the first positioning hole 11 and the second positioning hole 8, so as to realize the quick installation of the plug part 12, and facilitate quick disassembly and replacement, thereby improving maintenance efficiency.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A clamping fixture suitable for high-temperature stretching, comprising an environmental chamber body (1) and a threaded round bar (7), characterized in that, Hydraulic telescopic rods (4) are installed on the inner walls of the upper and lower ends of the environmental chamber body (1) through tension sensors (3). Connecting blocks (9) are connected to the opposite ends of the two hydraulic telescopic rods (4). Pull rod structures are connected to the two connecting blocks (9). Slots (14) are opened on the two pull rod structures. A card head (15) is inserted into the slot (14). A threaded hole (16) is provided on the card head (15). The two ends of the threaded round bar (7) are screwed to the two threaded holes (16) respectively.

2. The clamping fixture suitable for high-temperature stretching according to claim 1, characterized in that, The pull rod structure includes a rod body (6), one end of which is provided with a plug-in part (12), and the other end of which is provided with a snap-fit ​​part (13).

3. A clamping fixture suitable for high-temperature stretching according to claim 2, characterized in that, The connecting block (9) is provided with a plug hole (10), and the connecting block (9) is provided with a first positioning hole (11) perpendicular to the plug hole (10). The plug part (12) is provided with a second positioning hole (8) communicating with the first positioning hole (11). A connecting pin (17) is inserted into the first positioning hole (11) and the second positioning hole (8).

4. A clamping fixture suitable for high-temperature stretching according to claim 2, characterized in that, The slot (14) is provided on the snap-fit ​​part (13).

5. A clamping fixture suitable for high-temperature stretching according to claim 4, characterized in that, Both the card slot (14) and the card head (15) are T-shaped.

6. A clamping fixture suitable for high-temperature stretching according to claim 1, characterized in that, Supports (2) are provided on both sides of the lower end of the main body (1) of the environmental chamber.

7. A clamping fixture suitable for high-temperature stretching according to claim 1, characterized in that, The environmental chamber body (1) has a door (5) on its open side, and an observation window is provided on the door (5).

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