Compression creep reaction frame test device

Abstract

The utility model discloses a compression creep reaction frame testing device, which relates to the field of metal material lasting creep performance detection and comprises an upper connecting block, a lower connecting block, an upper compression disc and a lower compression disc which are sequentially arranged from top to bottom. A first connecting rod and a second connecting rod penetrate through the upper connecting block, the upper compression disc and the lower compression disc, the two ends of the first connecting rod are in threaded connection with a first upper nut and a second lower nut respectively, and the two ends of the second connecting rod are in threaded connection with a second upper nut and a first lower nut respectively. The compression creep reaction frame testing device provided by the utility model provides better coaxiality and can more accurately collect sample deformation through the grating ruler compared with a compression experiment carried out by directly using a tension lasting creep testing machine, so that a test result is more accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the field of metal material long-lasting creep performance detection, in particular to a compression creep reaction frame test device. Background Art

[0002] Titanium alloys have received relatively little attention among metal materials due to their low room temperature creep deformation and resistance to failure. However, with the development of precision instruments and their widespread use in deep-sea equipment, the room temperature creep behavior of titanium alloys has received increasing attention.

[0003] In contrast, non-metallic materials such as rubber and resin are used on the surface of equipment subjected to compressive static forces to reduce the impact of stress on the equipment itself. However, due to market demand, most current creep testing machines are only used for tensile high-temperature tests and are unable to perform compression creep tests that meet the coaxiality and long-term validity requirements specified in the standard. Therefore, a reaction frame device is conceived that can convert the tensile force of the testing machine into a compressive force on the specimen, with good coaxiality and long-term validity. By real-time monitoring of specimen stress and deformation, the compressive creep behavior of the specimen at room temperature can be achieved as required by the test method.

[0004] Currently, most creep testing machines are only used for tensile testing. Due to issues such as the upper and lower connecting rods being too long and not being coaxially aligned for compression, they cannot be used for compression testing. Therefore, a reaction frame device is needed to convert the tensile force of the creep testing machine into a stable compressive force, enabling long-term compression testing. Utility Model Content

[0005] The main purpose of the utility model is to provide a compression creep reaction frame test device, which can effectively solve the technical problem in the background technology that most of the current endurance creep testing machines are only used for tensile tests and cannot be used for compression tests due to the problems such as the upper and lower connecting rods being too long and the lack of compression coaxial calibration.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A compression creep reaction frame test device includes an upper connecting block, a lower connecting block, an upper compression plate and a lower compression plate, wherein the upper connecting block, the upper compression plate, the lower connecting block and the lower compression plate are arranged in sequence from top to bottom, and a first connecting rod and a second connecting rod are passed through the upper connecting block, the upper compression plate and the lower compression plate, wherein the two ends of the first connecting rod are respectively threadedly connected to a first upper nut and a second lower nut, and the two ends of the second connecting rod are respectively threadedly connected to a second upper nut and a first lower nut.

[0008] As a further solution of the present invention, a third connecting rod and a fourth connecting rod are inserted between the upper compression plate, the lower compression plate and the lower connecting block.

[0009] As a further scheme of the utility model, the both ends of the third connecting rod are respectively threaded with a third upper nut and a third lower nut, and the both ends of the fourth connecting rod are respectively threaded with a fourth upper nut and a fourth lower nut.

[0010] As a further scheme of the utility model, the upper surface of the lower compression disc is provided with perforations for corresponding the first connecting rod, the second connecting rod, the third connecting rod and the fourth connecting rod.

[0011] As a further scheme of the utility model, a first grating scale hole is arranged between the perforations of the first connecting rod and the third connecting rod, and a second grating scale hole is arranged between the perforations of the second connecting rod and the fourth connecting rod.

[0012] The utility model has the advantages of the following:

[0013] 1. Compared with directly using a tensioning creep test machine to perform compression experiments, the utility model provides better coaxiality and can more accurately collect sample deformation through a grating scale, so that the test results are more accurate and reliable.

[0014] 2. The utility model designs a counterforce frame tool device for converting the tensioning force of a creep test machine into compression force on a sample, thereby reducing the influence of the coaxiality of the test machine on the experimental results. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the utility model a compression creep counterforce frame test device.

[0016] Fig. 2 It is a top view of the utility model a compression creep counterforce frame test device lower compression disc.

[0017] In the figure: 101, first upper nut; 102, second upper nut; 103, first lower nut; 104, second lower nut; 105, third upper nut; 106, fourth upper nut; 107, third lower nut; 108, fourth lower nut; 201, upper connecting block; 202, lower connecting block; 301, first connecting rod; 302, second connecting rod; 303, third connecting rod; 304, fourth connecting rod; 401, upper compression disc; 402, lower compression disc; 403, first grating scale hole; 404, second grating scale hole. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to 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 of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0019] Embodiment one

[0020] In combination Figs. 1-2 A compression creep counterforce frame test device, comprising an upper connecting block 201, a lower connecting block 202, an upper compression disc 401 and a lower compression disc 402, the upper connecting block 201, the upper compression disc 401, the lower connecting block 202 and the lower compression disc 402 are arranged in sequence from top to bottom, first connecting rods 301 and second connecting rods 302 penetrate between the upper connecting block 201, the upper compression disc 401 and the lower compression disc 402, the two ends of the first connecting rod 301 are respectively threadedly connected with a first upper nut 101 and a second lower nut 104, and the two ends of the second connecting rod 302 are respectively threadedly connected with a second upper nut 102 and a first lower nut 103.

[0021] In the embodiment, third connecting rods 303 and fourth connecting rods 304 penetrate between the upper compression disc 401, the lower compression disc 402 and the lower connecting block 202, and the third connecting rods 303 cooperate with the fourth connecting rods 304 to connect and fix the upper compression disc 401, the lower compression disc 402 and the lower connecting block 202.

[0022] In the embodiment, the two ends of the third connecting rod 303 are respectively threadedly connected with a third upper nut 105 and a third lower nut 107, and the two ends of the fourth connecting rod 304 are respectively threadedly connected with a fourth upper nut 106 and a fourth lower nut 108, the third upper nut 105, the third lower nut 107, the fourth upper nut 106 and the fourth lower nut 108 seal the two ends of the third connecting rod 303 and the fourth connecting rod 304, and the threaded connection facilitates disassembly in the later period.

[0023] In the embodiment, the upper surface of the lower compression disc 402 is provided with perforations corresponding to the first connecting rods 301, the second connecting rods 302, the third connecting rods 303 and the fourth connecting rods 304, a first grating scale hole 403 is arranged between the perforations of the first connecting rods 301 and the third connecting rods 303, and a second grating scale hole 404 is arranged between the perforations of the second connecting rods 302 and the fourth connecting rods 304, the first grating scale hole 403 and the second grating scale hole 404 are used for inserting grating scales, and the deformation of the test sample is monitored through the grating scales.

[0024] It should be noted that the utility model is a kind of compression creep counterforce frame test device, when using, upper connecting block 201 is connected to the upper end of testing machine, and is connected with lower compression disc 402 by first connecting rod 301 and second connecting rod 302, lower connecting block 202 is connected to the upper end of testing machine, and is connected with upper compression disc 401 by third connecting rod 303 and fourth connecting rod 304, upper compression disc 401 has four connecting rod perforations corresponding to first connecting rod 301, second connecting rod 302, third connecting rod 303 and fourth connecting rod 304 respectively, lower compression disc 402 additionally increases two first grating scale holes 403 and second grating scale holes 404 consistent with grating scale size to insert grating scale monitoring test sample deformation, and the whole device is connected to the holding creep testing machine by converting the pulling force of testing machine into the pressure force to test sample and monitoring test sample deformation by grating scale.

[0025] Example two

[0026] The assembly process of the compression creep counterforce frame test device is as follows: first, first connecting rod 301 and second connecting rod 302 are inserted through the perforation of upper connecting block 201 and are connected with upper compression disc 401 and lower compression disc 402, first upper nut 101, second upper nut 102, first lower nut 103 and second lower nut 104 are used to fix the device, then third connecting rod 303 and fourth connecting rod 304 are connected with upper compression disc 401 and lower compression disc 402 through lower connecting block 202, third upper nut 105, fourth upper nut 106, third lower nut 107 and fourth lower nut 108 are used for fixation, after the whole device is fixed without loosening, it is connected to the holding creep testing machine through the connecting rod of testing machine, the grating scale is inserted into the compression disc grating scale hole after the test sample is placed in the center, and the coaxiality of the test sample does not need to be adjusted in the processing state.

[0027] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model.

Claims

1. A compression creep reaction frame test device, comprising an upper connecting block (201), a lower connecting block (202), an upper compression plate (401) and a lower compression plate (402), characterized in that: The upper connecting block (201), the upper compression plate (401), the lower connecting block (202) and the lower compression plate (402) are arranged in sequence from top to bottom; a first connecting rod (301) and a second connecting rod (302) are passed through the upper connecting block (201), the upper compression plate (401) and the lower compression plate (402); the first connecting rod (301) is threadedly connected at both ends with a first upper nut (101) and a second lower nut (104), and the second connecting rod (302) is threadedly connected at both ends with a second upper nut (102) and a first lower nut (103).

2. A compression creep reaction frame test device according to claim 1, characterized in that: A third connecting rod (303) and a fourth connecting rod (304) are passed through the upper compression disc (401), the lower compression disc (402) and the lower connecting block (202).

3. The compression creep reaction frame test device according to claim 2, characterized in that: The two ends of the third connecting rod (303) are respectively threadedly connected to a third upper nut (105) and a third lower nut (107), and the two ends of the fourth connecting rod (304) are respectively threadedly connected to a fourth upper nut (106) and a fourth lower nut (108).

4. The compression creep reaction frame test device according to claim 1, characterized in that: The upper surface of the lower compression disc (402) is provided with through holes corresponding to the first connecting rod (301), the second connecting rod (302), the third connecting rod (303) and the fourth connecting rod (304).

5. The compression creep reaction frame test device according to claim 4, characterized in that: A first grating ruler hole (403) is provided between the through holes of the first connecting rod (301) and the third connecting rod (303), and a second grating ruler hole (404) is provided between the through holes of the second connecting rod (302) and the fourth connecting rod (304).

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