High-temperature fatigue tensile test device for metal material

Abstract

The utility model relates to the field of fatigue tests, and discloses a high-temperature fatigue tensile test device for metal materials, which comprises a main body component and a cooling component, the main body component comprises a base, the top end of the base is symmetrically connected with two vertical limiting rods, and the two limiting rods are movably connected with a top seat in a penetrating manner; the bottom end of the top base and the top end of the bottom base are each connected with a clamp, and each limiting rod is movably sleeved with a lantern ring. According to the metal material cooling device, when a metal material needs to be cooled, the connecting plate and the fan can be driven to move to the corresponding height through the lantern ring and then fixed to the position through the positioning mechanism for air cooling heat dissipation, and the cooling speed of the metal material is increased. Besides, after the metal material is stretched and fractured, one part of the metal material is left on the lower clamp, and the other part of the metal material is left on the upper clamp, so that the two fans can respectively act on the two parts of the metal material to dissipate heat, and can simultaneously dissipate heat of one part of the metal material and then simultaneously dissipate heat of the other part of the metal material, the flexibility is high, and free selection can be realized according to requirements.

Description

Technical Field

[0001] The utility model belongs to the field of fatigue testing, in particular to a high-temperature fatigue tensile testing device for metal materials. Background Art

[0002] High temperature fatigue tensile mainly refers to the fatigue damage and tensile deformation of materials caused by repeated loading and unloading in high temperature environments. This phenomenon is particularly critical in high temperature components in industries such as aviation, automobiles, and energy, because they often work under high temperature and changing stress conditions.

[0003] In a tensile fatigue testing machine, metal materials are usually heated by building a heating element inside the fixture. Because metal has good thermal conductivity, the upper and lower fixtures can directly heat the top and bottom ends of the metal material after clamping them.

[0004] After the metal material is stretched and broken, it is necessary to remove the metal material for operations such as measuring the stretched length. However, since the temperature of the metal material is high at this time, it cannot be removed in time for operation and needs to wait for it to cool down naturally. This will delay the subsequent operations. Utility Model Content

[0005] Technical problem to be solved: How to speed up the cooling of metal materials.

[0006] Technical solution: The utility model provides a high-temperature fatigue tensile testing device for metal materials, including a main component and a cooling component: the main component includes a base, the top of the base is symmetrically connected to two vertical limit rods, the two limit rods are movably connected to a top seat, the bottom end of the top seat and the top end of the base are connected to a clamp, and each limit rod is movably sleeved with a ring; the cooling component includes a connecting plate with multiple air holes installed on the inner side of the ring, and a fan is installed on the end of the connecting plate away from the ring; in addition, the ring is also provided with a positioning mechanism for fixing its position after it slides.

[0007] Furthermore, the positioning mechanism includes a threaded knob that is threadedly connected to each collar and is perpendicular to the limiting rod. The threaded knob consists of a head and a threaded rod. The head is located at one end of the collar away from the connecting plate, and the inner side of the rod can be against the surface of the limiting rod.

[0008] Furthermore, the left and right fans may have blades in the same direction or in opposite directions.

[0009] Furthermore, a vertical plane groove is provided on the limiting rod at a position corresponding to the threaded knob, so that the inner side of the rod portion of the threaded knob can fit into the plane groove.

[0010] Furthermore, a middle connecting frame located behind the clamp is connected between the two connecting plates, so that the two connecting plates can slide and rise and fall at the same time.

[0011] Furthermore, the surface of the middle connecting frame is wrapped with a heat insulation sleeve, and the surface of the heat insulation sleeve is provided with a plurality of evenly distributed elastic protrusions.

[0012] Technical effect: In the utility model, when the metal material needs to be cooled, the connecting plate and the fan can be moved to the corresponding height by the collar and fixed there by the positioning mechanism for air cooling and heat dissipation, thereby accelerating the cooling speed of the metal material. In addition, since a part of the metal material remains in the lower fixture and the other part remains in the upper fixture after being stretched and broken, the two fans can act on the two parts of the metal material to dissipate heat respectively, or dissipate heat on one part at the same time and then dissipate heat on the other part at the same time, which is highly flexible and can be freely selected according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the positioning mechanism structure of the utility model;

[0017] Figure 4 It is an enlarged schematic diagram of the structure at A of the utility model;

[0018] In the figure: 1. base; 2. limit rod; 3. top seat; 4. clamp; 5. collar; 6. connecting plate; 7. fan; 8. positioning mechanism; 801, threaded knob; 9. flat groove; 10. middle connecting frame; 11. heat insulation sleeve; 12. elastic protrusion. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0020] The high temperature fatigue tensile test device for metal materials provided in this specific embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a main body component and a cooling component, wherein:

[0021] The main component includes a base 1, on the top of which two vertical limit rods 2 are symmetrically connected, and a top seat 3 is movably connected to the two limit rods 2. The bottom end of the top seat 3 and the top end of the base 1 are both connected to a clamp 4 with a heating element. The two clamps 4 correspond to each other up and down and are respectively used to clamp the top and bottom ends of the metal material; in addition, a ring 5 is movably sleeved on each of the limit rods 2 mentioned above.

[0022] The cooling member includes a connecting plate 6 with a plurality of air holes installed inside the collar 5, and a fan 7 is installed on the end of the connecting plate 6 away from the collar 5; in addition, a positioning mechanism 8 is also provided on the collar 5 for fixing its position after it slides. Figure 3 As shown, the positioning mechanism 8 includes a threaded knob 801 that is threadedly connected on each collar 5 and is perpendicular to the limit rod 2. The threaded knob 801 is composed of a head and a rod with a thread, and its head is located at one end of the collar 5 away from the connecting plate 6, and the inner side of its rod can be against the surface of the limit rod 2. It is worth mentioning that the left and right fans 7 can have the same blade direction or opposite blade directions. Assuming that the two have the same blades, the sides of the two fans 7 facing the fixture 4 are both concave surfaces of the blades, that is, the two fans 7 are both sucking cold wind from the outside to blow toward the metal material on the fixture 4, which is exactly why the air holes need to be opened on the connecting plate 6. In addition, the blade directions of the two fans 7 can also be opposite, that is, the sides of the two fans 7 facing the fixture 4 are one concave surface of the blade and the other convex surface of the blade. In this way, one fan 7 sucks cold wind from the outside to blow toward the metal material on the fixture 4, and the other fan 7 sucks the heat transferred to the surrounding by the metal material and discharges it to the other side. Furthermore, since a portion of the metal material is located in the upper fixture 4 and the other portion is located in the lower fixture 4 after the metal material is stretched and broken, the two fans 7 can act on one portion separately or act on one portion at the same time and then act on the other portion at the same time.

[0023] In addition, if Figure 1 and Figure 3 As shown, a vertical plane groove 9 is opened on the limit rod 2 at the position corresponding to the threaded knob 801, so that the inner side of the rod of the threaded knob 801 can fit into the plane groove 9. In this way, it is easier to use a plane to resist a plane, because the surface of the limit rod 2 itself is an arc surface and the end of the threaded knob 801 is a plane, so the contact range of the plane against the arc surface is small and it is easy to slip.

[0024] like Figure 3 and Figure 4As shown, a middle connecting frame 10 located behind the clamp 4 is connected between the two connecting plates 6, so that the two connecting plates 6 can slide and rise and fall at the same time. In addition, in order to prevent the middle connecting frame 10 from being overheated due to excessive heat transfer from the metal material on the clamp 4, a layer of heat insulation sleeve 11 is wrapped on the surface of the middle connecting frame 10. In addition, a plurality of evenly distributed elastic protrusions 12 are also provided on the surface of the heat insulation sleeve 11. Considering the heat transferred by the surrounding metal materials, the palm of the hand may sweat when pulling the middle connecting frame 10 by hand, so the elastic protrusions 12 are provided to prevent slipping.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high temperature fatigue tensile test device for metal materials, comprising a main component and a cooling component: The main component comprises a base (1), the top of the base (1) is symmetrically connected to two vertical limit rods (2), the two limit rods (2) are movably connected to a top seat (3), the bottom end of the top seat (3) and the top end of the base (1) are both connected to a clamp (4), and the characteristics are: A collar (5) is movably sleeved on each limiting rod (2); The cooling component comprises a connecting plate (6) with a plurality of air holes installed on the inner side of the collar (5), and a fan (7) is installed on the end of the connecting plate (6) away from the collar (5); in addition, a positioning mechanism (8) is also provided on the collar (5) for fixing its position after it slides.

2. The high temperature fatigue tensile testing device for metal materials according to claim 1, characterized in that: The positioning mechanism (8) comprises a threaded knob (801) threadedly connected to each collar (5) and perpendicular to the limiting rod (2). The threaded knob (801) consists of a head and a rod with a thread, wherein the head is located at an end of the collar (5) away from the connecting plate (6), and the inner side of the rod can abut against the surface of the limiting rod (2).

3. The high temperature fatigue tensile testing device for metal materials according to claim 2, characterized in that: The left and right fans (7) may have blades in the same direction or in opposite directions.

4. The high temperature fatigue tensile testing device for metal materials according to claim 2, characterized in that: A vertical plane groove (9) is provided on the limiting rod (2) at a position corresponding to the threaded knob (801), so that the inner side of the rod portion of the threaded knob (801) can fit into the plane groove (9).

5. The high temperature fatigue tensile testing device for metal materials according to claim 1, characterized in that: A middle connecting frame (10) located behind the clamp (4) is connected between the two connecting plates (6) so that the two connecting plates (6) can slide and rise and fall at the same time.

6. The high temperature fatigue tensile testing device for metal materials according to claim 5, characterized in that: The surface of the middle connecting frame (10) is wrapped with a heat insulation sleeve (11), and the surface of the heat insulation sleeve (11) is provided with a plurality of evenly distributed elastic protrusions (12).

Images