Metal material cold and hot fatigue test device

Abstract

The utility model relates to the field of metal testing, and discloses a metal material cold and hot fatigue testing device which comprises a main body component and an auxiliary component, the main body component comprises a testing machine body and a machine cover located on the front face of the machine body, and a transverse partition plate is installed in the testing machine body to divide the interior of the testing machine body into an upper part and a lower part; the auxiliary component comprises a bearing seat mounted at the bottom end of the lower part, the bearing seat is connected with a longitudinal fulcrum shaft, the fulcrum shaft movably penetrates through the partition plate and extends into the upper part, then the top end of the fulcrum shaft is fixedly connected with a transverse disc, and a sample is placed on the disc; and meanwhile, a driving mechanism for driving the fulcrum shaft to slowly rotate at a constant speed is arranged in the lower part. According to the utility model, the fulcrum shaft can be driven to rotate under the action of the driving mechanism, so that the fulcrum shaft drives the disc to slowly rotate at a constant speed, a sample on the disc can slowly rotate at a constant speed, and each surface of the sample can be uniformly heated.

Description

Technical Field

[0001] The utility model belongs to the field of metal testing, in particular to a cold and hot fatigue testing device for metal materials. Background Art

[0002] Metal thermal fatigue testing involves placing the sample in a temperature controller that provides a predetermined temperature cycle. Typically, the temperature cycle starts at a high temperature, then decreases to room temperature or low temperature, and then returns to a high temperature. The temperature range, duration, and total number of cycles for each cycle are preset based on specific test requirements.

[0003] The temperature controller used for this test is usually a hot and cold fatigue tester, in which the temperature can be adjusted by the controller. When the sample is heated, the heat is generated inside the tester, which makes it difficult for the product placed inside to be heated evenly, because the distance between each surface of the sample and the heat source inside the tester is different. In addition to this factor, there are also some devices inside the tester that block the sample product, which will also cause uneven heating of the sample. Utility Model Content

[0004] Technical problem to be solved: How to ensure uniform heating of samples in the testing machine.

[0005] Technical solution: The utility model provides a cold and hot fatigue testing device for metal materials, including a main component and an auxiliary component: the main component includes a testing machine body and a cover located on the front of the body, and a horizontal partition is installed inside the testing machine body to divide its interior into an upper and lower part; the auxiliary component includes a bearing seat installed at the bottom end of the lower part, and a longitudinal support shaft is connected to the bearing seat. The support shaft moves through the partition and extends to the upper part, and a horizontal disk is fixedly connected to its top end, and the disk is used to place a sample; at the same time, a driving mechanism for driving the support shaft to rotate slowly and at a uniform speed is arranged in the lower part.

[0006] Furthermore, the driving mechanism includes a motor installed on the bottom end of the lower part, the output shaft of the motor is parallel to the support shaft, and the outer peripheral sides of the output shaft and the support shaft are fixedly sleeved with mutually meshing gears located in the lower part.

[0007] Furthermore, a plurality of thin strip grooves are evenly distributed from top to bottom and communicated with the lower part through both sides of the testing machine body, and these thin strip grooves form a heat dissipation grille for heat dissipation of the motor.

[0008] Furthermore, a plurality of vertical limiting posts distributed in a circular array are fixedly connected to the top of the disc near the edge, and the limiting posts are all metal posts.

[0009] Furthermore, the bearing seat is mainly composed of an outer shell and a bearing located in the outer shell, the outer wall of the outer shell is connected to the bottom end of the lower part, the inner wall of the outer shell is fixedly connected to the outer ring of the bearing, and the inner ring of the bearing is interference fit with the support shaft.

[0010] Furthermore, the support shaft passes through the hole structure formed by the partition plate to form a connecting hole, and an auxiliary bearing can be installed in the connecting hole, and the auxiliary bearing is movably penetrated by the support shaft.

[0011] Technical effect: In the utility model, the support shaft can be driven to rotate under the action of the driving mechanism, so that the support shaft drives the disc to rotate slowly and uniformly, so that the sample on the disc will rotate slowly and uniformly, so that each surface of the sample will be evenly heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0016] In the figure: 1. testing machine body; 2. machine cover; 3. partition; 4. bearing seat; 5. support shaft; 6. disc; 7. driving mechanism; 701. motor; 702. gear; 8. limit column; 9. thin strip groove. DETAILED DESCRIPTION

[0017] 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.

[0018] The metal material thermal fatigue test device provided in this specific embodiment is as follows: Figure 1 and Figure 2 As shown, it includes a main component and auxiliary components, wherein:

[0019] The main components include a test machine body 1 and a cover 2 located on the front of the body. A horizontal partition 3 is installed inside the test machine body 1 to divide the interior into two upper and lower spaces.

[0020] The auxiliary component includes a bearing seat 4 installed at the bottom end of the lower part, and a longitudinal support shaft 5 is connected to the bearing seat 4. The support shaft 5 movably passes through the partition 3 and extends to the upper part, and a horizontal disk 6 is fixedly connected to its top end. The disk 6 is used to place the sample; at the same time, a driving mechanism 7 for driving the support shaft 5 to rotate slowly and uniformly is arranged in the lower part, such as Figure 3 As shown, the driving mechanism 7 includes a motor 701 installed at the bottom end of the lower part, the output shaft of the motor 701 is parallel to the support shaft 5, and the output shaft and the outer peripheral side of the support shaft 5 are fixedly sleeved with mutually meshing gears 702 located in the lower part. In this way, under the drive of the motor 701, the support shaft 5 can be driven to rotate through the two gears 702, so that the support shaft 5 drives the disk 6 to rotate slowly and uniformly, so that the sample located on the disk 6 will rotate slowly and uniformly, so that each surface of the sample will be evenly heated.

[0021] like Figure 2 As shown, in order to ensure heat dissipation in the lower space, a plurality of thin strip grooves 9 evenly distributed from top to bottom and communicating with the lower part are opened on both sides of the testing machine body 1 , and these thin strip grooves 9 form a heat dissipation grille for heat dissipation of the motor 701 .

[0022] In addition, if Figure 2 As shown, a plurality of vertical limiting posts 8 distributed in an annular array are fixedly connected to the top of the disk 6 near the edge, and these limiting posts 8 are all metal posts. The limiting posts 8 form a limiting structure to prevent the sample from being thrown out of the disk 6 due to the centrifugal effect of rotation.

[0023] The bearing seat 4 mentioned above is mainly composed of an outer shell and a bearing located in the outer shell. The outer wall of the outer shell is connected to the bottom end of the lower part, the inner wall of the outer shell is fixedly connected to the outer ring of the bearing, and the inner ring of the bearing is interference fit with the support shaft 5.

[0024] It is worth mentioning that the support shaft 5 passes through the hole structure formed by the partition plate 3 to form a connecting hole, in which an auxiliary bearing can be installed. The auxiliary bearing is movably penetrated by the support shaft 5 to further maintain the stability of the support shaft 5.

[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 metal material hot and cold fatigue test device, comprising a main component and an auxiliary component: The main body component comprises a testing machine body (1) and a cover (2) located on the front of the body, and is characterized in that: A transverse partition (3) is installed inside the testing machine body (1) to divide the inside into two parts, an upper part and a lower part; The auxiliary component comprises a bearing seat (4) installed at the bottom end of the lower part, a longitudinal support shaft (5) is connected to the bearing seat (4), the support shaft (5) movably passes through the partition (3) and extends to the upper part, and a transverse disc (6) is fixedly connected to the top end thereof, and the disc (6) is used to place the sample; at the same time, a driving mechanism (7) is arranged in the lower part for driving the support shaft (5) to rotate slowly and at a uniform speed.

2. The metal material thermal fatigue testing device according to claim 1, characterized in that: The driving mechanism (7) comprises a motor (701) mounted on the bottom end of the lower part, the output shaft of the motor (701) is parallel to the support shaft (5), and the outer peripheral sides of the output shaft and the support shaft (5) are fixedly sleeved with mutually meshing gears (702) located in the lower part.

3. The metal material thermal fatigue testing device according to claim 2, characterized in that: A plurality of thin strip grooves (9) are evenly distributed from top to bottom and communicated with the lower part through both sides of the testing machine body (1); these thin strip grooves (9) form a heat dissipation grille for heat dissipation of the motor (701).

4. The metal material thermal fatigue testing device according to claim 1, characterized in that: A plurality of vertical limiting posts (8) distributed in a circular array are fixedly connected to the top of the disc (6) near the edge, and the limiting posts (8) are all metal posts.

5. The metal material thermal fatigue testing device according to claim 2, characterized in that: The bearing seat (4) is mainly composed of an outer shell and a bearing located in the outer shell. The outer wall of the outer shell is connected to the bottom end of the lower part, the inner wall of the outer shell is fixedly connected to the outer ring of the bearing, and the inner ring of the bearing is interference fit with the support shaft (5).

6. The metal material thermal fatigue testing device according to claim 1, characterized in that: The support shaft (5) passes through the hole structure formed by the partition plate (3) to form a connecting hole, and an auxiliary bearing can be installed in the connecting hole. The auxiliary bearing is movably penetrated by the support shaft (5).

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