Integrated testing machine suitable for implementing multidirectional tension and torsion under high-temperature working condition and application of integrated testing machine

Abstract

The invention belongs to the technical field of material mechanical property testing equipment, and particularly discloses an integrated testing machine suitable for implementing multidirectional tension and torsion under a high-temperature working condition and application thereof.The integrated testing machine comprises a base, a cylindrical and topless shell frame is arranged over the base, the shell frame and the base are connected through a leveling structure, a carrying table is arranged in the shell frame, and the carrying table is connected with the base. An annular abdicating groove is reserved between the upper cover and the lower cover; a heating device is arranged in the center of the carrying table, a plurality of rotatable supporting platforms are annularly distributed with the carrying table as the center, each supporting platform is provided with a tension-torsion clamping jaw mechanism used for driving a clamped metal material to be tested to conduct a tension and / or torsion test, and a rotation driving mechanism used for driving the supporting platforms to rotate is arranged in the shell frame. The integrated testing machine disclosed by the invention can simulate the real stress condition of a metal material to be tested to carry out mechanical property testing at different temperatures through the cooperation of the multiple groups of pulling-twisting clamping jaw mechanisms and the rotary driving mechanism, so that the model selection and design requirements of the metal material in different temperature environments are met.

Description

Technical Field

[0001] The present invention belongs to the technical field of material mechanical property testing equipment, and specifically relates to an integrated testing machine suitable for implementing multi-directional tension and torsion under high temperature conditions and its application, which is mainly used for testing the mechanical properties of metal materials. Background Art

[0002] As we all know, metal materials are the foundation of modern industry. They are widely used in many fields such as aerospace, automobile manufacturing, energy mining, construction engineering, etc. These application scenarios have extremely high performance requirements for metal materials, especially the mechanical properties under complex working conditions.

[0003] In actual applications, the working environment of metal materials is complex and changeable, and they need to withstand multiple loads at the same time. Taking aircraft engines as an example, their key metal parts operate in a high-temperature environment and must not only withstand axial tensile forces in different directions, but also may be subjected to torsional forces at the same time due to the complex power transmission and interaction of rotating parts inside the engine. Therefore, testing the mechanical properties of metal materials under complex stress conditions is of great significance to ensure the safety and reliability of these key components in actual operation.

[0004] However, there are many limitations in the current tension and torsion test technology for metal materials. Traditional testing machines usually only conduct unidirectional or bidirectional tensile and torsion tests. Although this method can obtain some mechanical performance data of the material when it is subjected to force in a single direction to a certain extent, in actual engineering situations, the stress conditions faced by metal materials are far from simple. For example, the cantilever beam in the bridge structure is subjected to tensile force and / or torsion force from different directions at the same time. Under such a complex stress mode, relying solely on conventional unidirectional or bidirectional tension and torsion tests cannot fully reflect the true stress distribution inside the material. Because when the material is subjected to multi-directional force, its internal stress-strain relationship is a complex mutually coupled process, and the forces in different directions will affect each other, resulting in the deformation and stress state of the material being very different from that when it is subjected to unidirectional force.

[0005] This limitation is also reflected in the following two aspects: on the one hand, the existing testing machines are insufficient in simulating complex stress environments, and are mostly designed based on simple mechanical models, making it difficult to accurately reproduce the complex multi-directional load conditions that metal materials are subjected to in actual engineering projects; on the other hand, in the data processing and analysis stage, since the test does not fully consider the interaction of multi-directional forces, the stress-strain model established based on the test results is too idealized and deviates greatly from the actual complex working conditions.

[0006] In addition, existing testing machines are generally not equipped with high-temperature environment simulation devices, but the physical and mechanical properties of metal materials will change significantly under high temperature conditions, such as thermal expansion, material softening, etc., which will have an important impact on the stress-strain relationship of the material. When conducting tension and torsion tests, the existing technology often ignores the key factor of temperature, making the test results unable to truly reflect the performance of metal materials under high-temperature and complex stress conditions, and unable to meet the selection and design requirements of metal materials in high-temperature environments.

[0007] In view of this, this invention is proposed. Summary of the invention

[0008] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide an integrated testing machine suitable for implementing multi-directional tension and torsion under high temperature conditions and its application, which is mainly used to solve the problem that traditional testing machines can only perform unidirectional or bidirectional tension and torsion tests, that is, the prior art has poor ability to simulate complex stress environments, does not fully consider the effects of multi-directional forces, and most of them do not have high-temperature simulation devices, and cannot meet the requirements of mechanical properties testing for metal material selection and design under actual high-temperature complex stress conditions, and there will be certain safety hazards.

[0009] The purpose of the present invention is to be solved by the following technical solutions:

[0010] In a first aspect, the present invention provides an integrated testing machine suitable for implementing multi-directional tension and torsion under high temperature conditions, comprising a base, a cylindrical and topless shell frame is arranged directly above the base, the shell frame and the base are connected by a leveling structure, a circular carrier is fixed in the top opening of the shell frame, and an annular clearance groove is reserved between the carrier and the shell frame;

[0011] A heating device is provided at the center of the carrier, and a plurality of rotating support platforms are arranged in a ring around the heating device on the carrier, and a pulling-torsion clamping mechanism is provided on each support platform, and the pulling-torsion clamping mechanism is used to drive the clamped metal material to be tested to perform tension and / or torsion tests. A rotating driving mechanism is provided in the shell frame, and the rotating driving mechanism is connected to the corresponding support platform through a transmission member provided in the annular give way groove, and is used to drive the support platform to rotate around the heating device.

[0012] Furthermore, the pull-twist clamp mechanism includes a motor support seat arranged on the support platform, a torsion servo motor is installed on the motor support seat, and the output end of the torsion servo motor is detachably connected to the clamp located on one side of the heating device through a transmission rod.

[0013] Furthermore, two linear guide rails are laid on the support platform at radial intervals along the shell frame, and a slide groove is provided at the bottom of the motor support seat that is slidably connected to the linear guide rails. A lead screw is installed on the support platform, and the lead screw is arranged in parallel between the two linear guide rails and is threadedly connected to a lead screw nut fixed to the bottom of the motor support seat. One end of the lead screw is rotatably connected to the support platform through a bearing, and the other end is connected to a tensioning servo motor fixed on the outside of the support platform through a coupling.

[0014] Furthermore, a displacement sensor is installed on the support platform at one end of the tensioning servo motor, and the displacement sensor is used to monitor the displacement relationship between the clamping claw and the support platform.

[0015] Furthermore, an annular guide rail is arranged on the carrier with the heating device as the center, and an arc groove matching with the annular guide rail is arranged at the bottom of each supporting platform.

[0016] Furthermore, the number of the supporting platforms is four, the corresponding pulling-twisting clamping mechanisms are four groups, and the corresponding rotating driving mechanisms are provided with four sets of gear groups.

[0017] Furthermore, each set of the gear group includes an internal gear fixedly connected to the transmission member, a rotary servo motor and an external gear are arranged inside the internal gear, the rotary servo motor is fixed to the bottom of the shell frame, and the output shaft of the rotary servo motor is arranged along the axial direction of the shell frame, the bottom center of the external gear is fixedly connected to the output shaft of the rotary servo motor, and the external gear is meshed with the internal gear.

[0018] Furthermore, the transmission member includes a vertical part and a horizontal part, the outer diameter of the vertical part is smaller than the width of the annular clearance groove, one end of the vertical part passes through the annular clearance groove and is fixedly connected to the bottom of the support platform, and the other end is fixedly connected to one end of the horizontal part, and the other end of the horizontal part is fixedly connected to the outer circumferential surface of the internal gear.

[0019] Furthermore, the four internal gears in the four sets of the gear groups are stacked, and any two adjacent internal gears are slidably separated by an annular partition plate embedded with balls.

[0020] In the second aspect, the present invention provides an application based on the above-mentioned integrated testing machine, which is used to perform uniaxial tension, uniaxial torsion, uniaxial tension and torsion, biaxial tension, biaxial torsion, biaxial tension and torsion, multi-directional tension, multi-directional torsion or multi-directional tension and torsion tests on the metal material to be tested, and all tests can be carried out in a high temperature environment.

[0021] Among them, biaxial testing can be performed with equal or unequal proportions of stretching, tension-torsion, and tension-torsion.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The integrated testing machine provided by the present invention mainly realizes uniaxial, biaxial, multi-directional stretching, torsion, tension and torsion tests through the coordinated operation of the tension-torsion clamping mechanism and the rotary drive mechanism arranged on multiple support platforms, and the above tests can all be carried out at the corresponding temperature, so it can accurately simulate the stress conditions of metal materials under actual complex working conditions; and the integrated testing machine has a reasonable structural design, such as monitoring the displacement relationship through displacement sensors, precise design of gear sets in the rotary drive mechanism, etc., which effectively overcomes the limitations of traditional testing machines in simulating complex stress environments, not fully considering the effects of multi-directional forces, and most of them do not have high-temperature simulation devices, and can meet the needs of mechanical properties testing for metal material selection and design under high-temperature complex stress conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are incorporated in and constitute a part of this specification and, together with the description, serve to explain the principles of the present invention.

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the integrated testing machine of the present invention;

[0027] Figure 2 It is an exploded view of the integrated testing machine of the present invention;

[0028] Figure 3 It is a schematic diagram of the connection between the support platform and the tension-twist clamp mechanism in the integrated testing machine of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection between the support platform, the tension-twist clamp mechanism and the rotation drive mechanism in the integrated testing machine of the present invention;

[0030] Figure 5 It is a schematic diagram of the explosion structure of the rotary drive mechanism in the integrated testing machine of the present invention.

[0031] in:

[0032] 1 is a base;

[0033] 2 is a leveling structure;

[0034] 3 is a shell frame;

[0035] 4 is a carrier; 41 is a circular guide rail;

[0036] 5 is a circular give way groove;

[0037] 6 is a heating device;

[0038] 7 is a support platform; 71 is an arc groove;

[0039] 8 is a tension-twist clamp mechanism; 81 is a motor support seat; 82 is a torsion servo motor; 83 is a transmission rod; 84 is a clamp; 85 is a linear guide; 86 is a lead screw; 87 is a lead screw nut; 88 is a tension servo motor; 89 is a displacement sensor;

[0040] 9 is a rotary drive mechanism; 91 is a transmission member; 92 is an internal gear; 93 is a rotary servo motor; 94 is an external gear; 95 is an annular partition; 911 is a vertical portion; and 912 is a horizontal portion. DETAILED DESCRIPTION

[0041] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices consistent with some aspects of the present invention as detailed in the appended claims.

[0042] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings.

[0043] See also Figures 1 to 5 An embodiment of the present invention provides an integrated testing machine suitable for implementing multi-directional tension and torsion under high temperature conditions, which includes a base 1, and a shell frame 3 is connected to the base 1 through a leveling structure 2 directly above the base 1. The shell frame 3 is a stepped cylindrical structure with no top and a bottom, and its bottom is firmly connected to the leveling structure 2. A circular carrier 4 is provided in the opening at the top of the shell frame 3, and the carrier 4 is fixedly connected to the inner bottom of the shell frame 3 through a plurality of connecting columns. After the connection, the upper surface of the carrier 4 and the top surface of the shell frame 3 are on the same horizontal plane, and an annular clearance groove 5 is reserved between the carrier 4 and the shell frame 3 after the connection.

[0044] In the embodiment of the present invention, the base 1 serves as the foundation of the entire testing machine and can be firmly connected to the test platform or foundation to ensure that it can withstand various forces without shaking or displacement during the test. The shape of the base 1 is flexible and diverse, and can be a cylinder, a cube or a cuboid, which is not specifically limited in the embodiment of the present invention. The function of the leveling structure 2 is to avoid the tilt problem caused by uneven ground or installation errors, thereby effectively eliminating the adverse effects of gravity on the test results. In practical applications, the leveling structure 2 has a variety of forms to choose from, including spiral leveling structures, hydraulic leveling structures and other existing technologies, which will not be described in detail here.

[0045] It should be noted that, in the embodiment of the present invention, a heating device 6 is provided at the center of the carrier 4. The heating device 6 preferably adopts a wire heating method, that is, when current passes through the wire, the wire generates heat due to resistance, and the generated heat heats the metal material to be tested, thereby simulating the stress of the metal material in a high temperature environment. At the same time, a plurality of rotatable support platforms 7 are arranged in a ring shape with the heating device 6 as the center on the surface of the carrier 4. Each support platform 7 is equipped with a tension-twist clamp mechanism 8, and the tension-twist clamp mechanism 8 is used to drive the clamped metal material to be tested to perform tension and / or torsion tests. In addition, a rotation drive mechanism 9 is provided in the shell frame 3. The rotation drive mechanism 9 is connected to the corresponding support platform 7 through a transmission member 91 provided in the annular clearance groove 5. This design enables the rotation drive mechanism 9 to provide stable rotation power for the support platform 7, thereby driving the support platform 7 and the tension-twist clamp mechanism 8 on the support platform 7 to rotate around the heating device 6 at any angle as a whole, creating conditions for realizing multi-directional tension and torsion tests of metal materials.

[0046] Specifically, Figure 1 , 2 As shown, in the embodiment of the present invention, each group of pulling-twisting jaw mechanism 8 includes a motor support seat 81 arranged on the support platform 7, and a torsion servo motor 82 is installed on the side of the motor support seat 81 away from the heating device 6. The output end of the torsion servo motor 82 is detachably connected to the jaw 84 located on the side of the heating device 6 through a transmission rod 83. Through the detachable connection, the operator can easily and quickly replace the corresponding jaw according to the specific type of the metal material to be tested. Through the above settings, when testing the metal to be tested, by controlling the speed and rotation direction of the torsion servo motor 82, the metal material to be tested clamped by the jaw 84 can be twisted, thereby simulating the torsion force and angle to which the metal material is subjected under actual complex working conditions.

[0047] Furthermore, each set of tension-twist jaw mechanism 8 is also provided with a tensioning structure for tensioning the metal material to be tested, and the tensioning structure includes two linear guide rails 85, which are laid on the support platform 7 along the radial spacing of the shell frame 3, and the bottom of the corresponding motor support seat 81 is provided with a slide groove slidably connected to the two linear guide rails 85 to ensure that the motor support seat 81 can slide back and forth along the linear guide rails 85. At the same time, a lead screw 86 is also installed on the support platform 7, which is arranged in parallel between the two linear guide rails 85 and is threadedly connected to a lead screw nut 87 fixedly arranged at the bottom of the motor support seat 81, one end of the lead screw 86 is rotatably connected to the inner side of the support platform 7 through a bearing, and the other end is connected to a tensioning servo motor 88 fixedly arranged on the outer side of the support platform 7 through a coupling. When the tensioning servo motor 88 is started, the lead screw 86 will be driven to rotate. Since the lead screw nut 87 is fixedly connected to the motor support seat 81, the rotational movement of the lead screw 86 will be converted into linear movement of the motor support seat 81 along the linear guide rail 85, thereby realizing the tensioning operation of the metal material to be tested, and then being able to simulate the tensioning force and displacement of the metal material under actual complex working conditions.

[0048] Preferably, a displacement sensor 89 is installed on the support platform 7 and at one end of the tensioning servo motor 88. The displacement sensor 89 is used to monitor the displacement relationship between the clamp 84 and the support platform 7. The displacement sensor 89 needs to be reset to zero before the test.

[0049] In the embodiment of the present invention, an annular guide rail 41 is provided on the surface of the carrier 4 with the heating device 6 as the center, and an arc groove 71 is provided at the bottom of each support platform 7 to cooperate with the annular guide rail 41. In this way, when the support platform 7 is subjected to the rotational driving force provided by the rotational driving mechanism 9, the support platform 7 and the tension-twist clamp mechanism 8 thereon can rotate around the heating device 6 as a whole, so that any support platform 7 can be in different orientations, so that mechanical performance tests in different directions can be realized according to actual test requirements, which greatly expands the function and application scope of the testing machine.

[0050] In the embodiment of the present invention, there are four supporting platforms 7, and correspondingly there are four groups of pulling-twisting jaw mechanisms 8. The rotation driving mechanism 9 for driving the supporting platform 7 and the pulling-twisting jaw mechanism 8 to rotate is composed of four sets of gear groups. Each set of gear groups can independently control the rotation of the supporting platform 7 and the pulling-twisting jaw mechanism 8 thereon, or any multiple sets of gear groups can cooperatively control the rotation of the supporting platform 7 and the pulling-twisting jaw mechanism 8, thereby realizing more complex and multi-directional mechanical performance testing.

[0051] Specifically, Figure 4 , 5As shown, each gear set in the embodiment of the present invention includes an annular internal gear 92 fixedly connected to the transmission member 91, and a rotary servo motor 93 and an external gear 94 are arranged inside the internal gear 92. When setting, it is necessary to pay attention to staggering with the connecting column of the fixed carrier 4 to prevent interference. The rotary servo motor 93 is fixedly arranged at the bottom of the housing frame 3, and the output shaft of the rotary servo motor 93 is arranged along the axial direction of the housing frame 3. The bottom center of the external gear 94 is fixedly connected to the output shaft of the rotary servo motor 93, and the external gear 94 and the internal gear 92 are meshed with each other.

[0052] The transmission member 91 is composed of a vertical portion 911 and a horizontal portion 912. The outer diameter of the vertical portion 911 is smaller than the width of the annular clearance groove 5. One end of the vertical portion 911 passes through the annular clearance groove 5 and is fixedly connected to the bottom of the support platform 7, and the other end is fixedly connected to one end of the horizontal portion 912. The other end of the horizontal portion 912 is fixedly connected to the outer circumferential surface of the inner gear 92. After such an arrangement, the rotation servo motor 93 is started to drive the outer gear 94 to rotate, thereby driving the inner gear 92 meshing with the outer gear 94 to rotate, and the inner gear 92 synchronously drives the transmission member 91, the support platform 7 and the pulling-twisting clamp mechanism 8 fixedly connected thereto to rotate together, so that the angle of the pulling-twisting clamp mechanism 8 relative to the metal material can be changed, so as to implement stretching and / or twisting from different directions.

[0053] Furthermore, in the embodiment of the present invention, the four internal gears 92 in the four sets of gear groups are arranged in a stacked manner, and the four internal gears 92 are coaxially arranged with the shell frame 3 and the carrier 4. At the same time, any two adjacent internal gears 92 are slidably separated by an annular partition plate 95 embedded with balls to prevent mutual influence, so as to ensure the independence and stability of each internal gear 92 during rotation.

[0054] The integrated testing machine provided by the present invention also includes a control system, which is connected to the torsion servo motor 82 and the tension servo motor 83 in the tension-twist clamp mechanism 8, and the rotation servo motor 93 in the rotation drive mechanism 9, and controls the speed, direction and other parameters of the torsion servo motor 82, the tension servo motor 83 and the rotation servo motor 93, and combines the temperature regulation of the heating device 6. The integrated testing machine can be used to perform uniaxial tension, uniaxial torsion, uniaxial tension and torsion, biaxial tension, biaxial torsion, biaxial tension and torsion, multi-directional tension, multi-directional torsion or multi-directional tension and torsion tests on the metal material to be tested. During the biaxial test, equal-proportional or unequal-proportional operations can be performed, and all these tests can be carried out under the temperature conditions controlled by the heating device 6, which provides a strong guarantee for comprehensively and accurately testing the multi-directional tension and torsion mechanical properties of metal materials under complex working conditions.

[0055] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention.

[0056] It should be understood that the present invention is not limited to what has been described above and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. An integrated testing machine suitable for implementing multi-directional tension and torsion under high temperature conditions, characterized in that: The invention comprises a base (1), a cylindrical and topless shell frame (3) is arranged directly above the base (1), the shell frame (3) and the base (1) are connected via a leveling structure (2), a circular carrier (4) is fixedly arranged in the top opening of the shell frame (3), and an annular clearance groove (5) is reserved between the carrier (4) and the shell frame (3); A heating device (6) is provided at the center of the carrier (4); a plurality of rotating support platforms (7) are arranged in a ring on the carrier (4) with the heating device (6) as the center; each of the support platforms (7) is provided with a pulling-twisting jaw mechanism (8); the pulling-twisting jaw mechanism (8) is used to drive the clamped metal material to be tested to perform tension and / or torsion tests; a rotating drive mechanism (9) is provided in the shell frame (3); the rotating drive mechanism (9) is connected to the corresponding support platform (7) through a transmission member (91) provided in the annular clearance groove (5), and is used to drive the support platform (7) to rotate around the heating device (6).

2. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 1, characterized in that: The pulling-twisting clamping jaw mechanism (8) comprises a motor support seat (81) arranged on a supporting platform (7), a torsion servo motor (82) is mounted on the motor support seat (81), and an output end of the torsion servo motor (82) is detachably connected to a clamping jaw (84) located on one side of the heating device (6) via a transmission rod (83).

3. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 2, characterized in that: Two linear guide rails (85) are laid on the support platform (7) along the radial spacing of the shell frame (3); a slide groove slidably connected to the linear guide rails (85) is provided at the bottom of the motor support seat (81); a lead screw (86) is installed on the support platform (7); the lead screw (86) is arranged in parallel between the two linear guide rails (85) and is threadedly connected to a lead screw nut (87) fixed at the bottom of the motor support seat (81); one end of the lead screw (86) is rotatably connected to the support platform (7) through a bearing, and the other end is connected to a tensioning servo motor (88) fixed on the outside of the support platform (7) through a coupling.

4. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 3 is characterized in that: A displacement sensor (89) is installed on the support platform (7) at one end of the tensioning servo motor (88), and the displacement sensor (89) is used to monitor the displacement relationship between the clamping claw (84) and the support platform (7).

5. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to any one of claims 1 to 4, characterized in that: An annular guide rail (41) is arranged on the carrier (4) with the heating device (6) as the center of the circle, and an arc groove (71) matching with the annular guide rail (41) is arranged at the bottom of each supporting platform (7).

6. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 5, characterized in that: The number of the supporting platforms (7) is four, the corresponding pulling-twisting clamping mechanisms (8) are four groups, and the corresponding rotating driving mechanism (9) is provided with four sets of gear sets.

7. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 6, characterized in that: Each set of the gear sets comprises an internal gear (92) fixedly connected to the transmission member (91); a rotary servo motor (93) and an external gear (94) are arranged inside the internal gear (92); the rotary servo motor (93) is fixedly arranged at the bottom of the housing frame (3); and the output shaft of the rotary servo motor (93) is arranged along the axial direction of the housing frame (3); the bottom center of the external gear (94) is fixedly connected to the output shaft of the rotary servo motor (93), and the external gear (94) is meshed with the internal gear (92).

8. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 7, characterized in that: The transmission member (91) comprises a vertical portion (911) and a horizontal portion (912); the outer diameter of the vertical portion (911) is smaller than the width of the annular clearance groove (5); one end of the vertical portion (911) passes through the annular clearance groove (5) and is fixedly connected to the bottom of the support platform (7); the other end of the vertical portion (911) is fixedly connected to one end of the horizontal portion (912); and the other end of the horizontal portion (912) is fixedly connected to the outer circumferential surface of the internal gear (92).

9. The integrated testing machine for multi-directional tension and torsion under high temperature conditions according to claim 7, characterized in that: The four internal gears (92) in the four gear sets are stacked, and any two adjacent internal gears (92) are slidably separated by an annular partition plate (95) embedded with balls.

10. An application of an integrated testing machine as described in any one of claims 1 to 9, wherein the integrated testing machine is used to perform uniaxial tension, uniaxial torsion, uniaxial tension and torsion, biaxial tension, biaxial torsion, biaxial tension and torsion, multi-directional tension, multi-directional torsion or multi-directional tension and torsion tests on the metal material to be tested, and all tests can be performed in a high temperature environment.

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