Material testing machine

Abstract

The present application provides a material testing machine, comprising a machine body, a first fixing member, a second fixing member and a detection assembly; the first fixing member and the second fixing member are both mounted on the machine body, the first fixing member is used to mount a first test piece, and the second fixing member is used to mount a second test piece; when the first fixing member and the second fixing member are in a first state, the first test piece and the second test piece are in sliding contact; when the first fixing member and the second fixing member are in a second state, the first fixing member drives the first test piece to collide with the second test piece; the detection assembly is used to detect target parameters, when the first fixing member and the second fixing member are in the first state, the target parameters include the friction force between the first test piece and the second test piece, and / or the friction sound; when the first fixing member and the second fixing member are in the second state, the target parameters include the collision force received by the first test piece or the second test piece. The present application solves the problem that the functions of material testing equipment are relatively single and the test efficiency is low.

Description

Technical Field

[0001] The present application relates to the field of material testing, and in particular to a material testing machine. Background Art

[0002] Materials are the foundation of industrial production, and high-quality materials are the fundamental guarantee and prerequisite for producing high-quality products. Testing materials provides rational, scientific support for manufacturers to research and develop new materials, improve material quality, maximize material potential, and analyze failures in manufactured parts.

[0003] There are many different types of material testing, depending on their performance. For example, during the opening and closing of a valve, the surfaces of the seals within the valve may experience friction, wear, or collision damage due to contact, thus affecting the overall sealing effect of the valve. Therefore, friction, wear, and collision tests are usually required for the seals.

[0004] However, different material tests usually require the use of different test equipment, which has relatively simple functions and low test efficiency. Summary of the Invention

[0005] The embodiments of the present application provide a material testing machine to solve the problem that material testing equipment has relatively single functions and low testing efficiency.

[0006] The material testing machine provided in the embodiment of the present application includes a body, a first fixing member, a second fixing member and a detection assembly;

[0007] The first fixing member and the second fixing member are both mounted on the machine body, the first fixing member is used to mount a first test member, and the second fixing member is used to mount a second test member; when the first fixing member and the second fixing member are in a first state, the first test member and the second test member are in sliding contact; when the first fixing member and the second fixing member are in a second state, the first fixing member drives the first test member to collide with the second test member;

[0008] The detection component is used to detect target parameters. When the first fixing member and the second fixing member are in the first state, the target parameters include the friction force between the first test member and the second test member, and / or the friction sound generated by the sliding contact between the first test member and the second test member; when the first fixing member and the second fixing member are in the second state, the target parameters include the collision force applied to the first test member or the second test member.

[0009] By adopting the above technical solution, the first test piece is fixed by the first fixing piece, and the second test piece is fixed by the second fixing piece; when the first fixing piece and the second fixing piece are in the first state, the first test piece and the second test piece are in sliding contact, and the detection component detects the friction force and / or friction sound between the first test piece and the second test piece, so that a material friction test can be performed; when the first fixing piece and the second fixing piece are in the second state, the detection component detects the collision force exerted on the first test piece or the second test piece, so that a material collision test can be performed, thereby solving the problem of relatively single function and low test efficiency of material testing equipment.

[0010] It is further configured that a connecting base is provided on the body, the connecting base is slidably provided on the body along a first direction, the first fixing member is slidably provided on the connecting base along a second direction, the second direction is perpendicular to the first direction, the connecting base is provided with a collision device; the second fixing member is slidably provided on the body along the second direction, and the body is provided with a vibrating member;

[0011] When the first fixing member and the second fixing member are in the first state, the connecting base is in the first position and is fixed relative to the body; in the second direction, the vibrating member drives the second fixing member to vibrate, thereby driving the first fixing member to slide on the connecting base along the second direction;

[0012] When the first fixing member and the second fixing member are in the second state, the second fixing member is fixed relative to the body; the connecting seat is in the second position and is fixed relative to the body, and in the first direction, a gap is set between the first test member and the second test member, and the collision device drives the first fixing member to move along the first direction so that the first test member hits the second test member.

[0013] It is further configured that the detection component includes a friction sensor, a sound sensor and a pressure sensor;

[0014] The friction sensor is mounted on the connecting seat and in sliding contact with the first fixing member to detect the friction between the first test member and the second test member;

[0015] The sound sensor is mounted on the body;

[0016] The pressure sensor is mounted on the connecting seat and is used to detect the pressure applied to the first fixing member in the first direction.

[0017] It is further configured that the detection component further includes a vibration sensor and / or a travel sensor;

[0018] When the first fixing member and the second fixing member are in the first state, the vibration sensor is used to detect the vibration frequency and vibration amplitude of the second fixing member; and the stroke sensor is used to detect the vibration displacement of the second fixing member in the second direction.

[0019] It is further configured that the collision device includes a mounting seat, a sliding column and a mounting base plate, the mounting base plate is mounted on the connecting seat, the mounting seat is connected to the mounting base plate, and the sliding column is connected to the first fixing member;

[0020] When the sliding column is in the first state, the sliding column is fixed to the mounting seat; when the sliding column is in the second state, the sliding column slides on the mounting seat along the first direction to drive the first test piece to collide with the second test piece through the first fixing piece.

[0021] It is further configured that the collision device further includes an adjustment assembly, the adjustment assembly including a first elastic member and a driving member, the driving member is mounted on the mounting base plate and has a piston rod, a first end of the first elastic member is connected to the sliding column, a second end of the first elastic member is connected to the piston rod of the driving member, and the first elastic member extends and contracts in the first direction;

[0022] When the sliding post is in the first state, the driving member drives the first elastic member to compress.

[0023] It is further configured that the collision device further includes a rebound component, and the rebound component includes a rebound member and a second elastic member;

[0024] The resilient member is connected to the piston rod of the driving member and is slidably arranged on the mounting seat along the first direction, and the first elastic member is connected to the resilient member;

[0025] The first end of the second elastic member is connected to the mounting substrate, the second end of the second elastic member is connected to the resilient member, and the expansion and contraction direction of the second elastic member is the first direction.

[0026] It is further configured that the mounting seat is provided with a sliding groove and a fixed groove that are connected; the sliding groove extends along the first direction, and an angle is formed between the extending direction of the fixed groove and the first direction;

[0027] The sliding column is provided with a control head. When the sliding column is in the first state, the control head is clamped in the fixing groove. When the sliding column is in the second state, the sliding column slides in the sliding groove along the first direction.

[0028] It is further configured that the machine body includes a moving device, and the moving device includes a moving screw and a power element;

[0029] The movable screw extends along the first direction and is rotatably mounted on the machine body around the first direction. The connecting seat is threadedly connected to the movable screw. The power element is mounted on the machine body and is used to drive the movable screw to rotate.

[0030] It is further configured that the first fixing member includes a first fixing portion, a first clamping plate, a second clamping plate and a driving screw;

[0031] The first clamping plate is fixedly mounted on the first fixing portion, and the second clamping plate is arranged opposite to the first clamping plate and is slidably mounted on the first fixing portion in a direction approaching or moving away from the first clamping plate; the driving screw is threadedly connected to the first fixing portion, and the driving screw is rotatably connected to the second clamping plate;

[0032] And / or, the second fixing member includes a second fixing portion, a first clamp, a second clamp and a fixing screw;

[0033] The first chuck is fixedly mounted on the second fixing portion, the second chuck is arranged opposite to the first chuck, and is slidably mounted on the second fixing portion in a direction approaching or moving away from the first chuck, and the fixing screw is threadedly connected to the second fixing portion and tightly abuts against the second chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0035] Figure 1 A schematic structural diagram of a material testing machine provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of the structure of a mobile device provided in an embodiment of the present application;

[0037] Figure 3 A schematic diagram of the installation structure of the vibration member provided in an embodiment of the present application;

[0038] Figure 4 A schematic structural diagram of a second fixing member provided in an embodiment of the present application;

[0039] Figure 5 A schematic structural diagram of a collision device provided in an embodiment of the present application;

[0040] Figure 6 A schematic diagram showing the structure of a sliding column provided in an embodiment of the present application;

[0041] Figure 7 A cross-sectional view of a collision device provided in an embodiment of the present application;

[0042] Figure 8 A schematic structural diagram of the first fixing member provided in an embodiment of the present application.

[0043] Description of reference numerals:

[0044] 1. Body; 11. Mounting frame; 111. Limit rod; 12. Moving device; 121. Power element; 122. Moving screw; 123. Sliding rod; 13. Connecting seat; 14. Vibrating element; 141. Vibrating shaft; 1411. Connecting block; 2. First fixing member; 21. First fixing portion; 22. First clamping plate; 221. First clamping block; 23. Second clamping plate; 231. Second clamping block; 24. Driving screw; 3. Second fixing member; 31. Second fixing portion; 311. Guide portion; 32. First chuck; 33. Second chuck; 331. Guide Rod; 34, fixed screw; 4, detection assembly; 41, friction sensor; 42, sound sensor; 43, pressure sensor; 44, vibration sensor; 45, stroke sensor; 451, detection rod; 5, collision device; 51, mounting base; 52, mounting seat; 521, fixing groove; 522, sliding groove; 53, sliding column; 531, control head; 54, adjustment assembly; 541, first elastic member; 542, driving member; 55, rebound assembly; 551, rebound member; 552, second elastic member; 6, first test member; 7, second test member.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] As mentioned in the background, many types of material tests are currently performed based on their different properties. These tests include friction and wear tests, impact tests, hardness tests, and tensile tests. However, due to differences in testing methods, common testing equipment is typically only capable of performing a single type of performance test. Consequently, different material tests often require different devices and equipment, resulting in limited functionality. Furthermore, repeated changes in testing equipment to complete different material tests can lead to low testing efficiency.

[0047] The friction, wear, and collision patterns of materials are important research areas. For example, at the valve sealing surface, micron-level amplitude motion will occur between the contact surfaces of polymers and metals, causing wear. This composite friction caused by the small amplitude vibration between the polymer and metal surfaces after they are pressed against each other to produce an indentation is called micro-friction. Micro-friction can not only cause friction and wear between the contact surfaces of the valve seal, resulting in loose closure, poor sealing, or the formation of wear particles, but also accelerate the deformation and repeated wear of the indentation. In addition, with the repeated opening and closing and micro-collision of the polymer-metal friction sealing surface, the fatigue life of the valve seal is greatly reduced. With the requirements of high-tech fields such as liquid hydrogen and liquid oxygen valves for launch vehicles for high precision, long life, and high reliability, as well as the harsh working conditions, the harm of micro-motion damage and collision wear has become increasingly prominent and has become one of the main causes of valve failure.

[0048] Liquid hydrogen and liquid oxygen valves used in launch vehicles are often subjected to extreme operating conditions, including liquid hydrogen (-253°C) and liquid oxygen (-183°C) fluid media, strong loads (transient loads up to 100g), and multiple opening and closing (strong vibration, frequent actuation more than 100 times). Furthermore, due to the constant switching between deep cryogenic environments and room temperature, there is no available lubricant between key mating surfaces. As a result, the valve component materials undergo a constitutive switching process of low-temperature embrittlement, room-temperature elasticity, and high-temperature softening over a wide temperature range. The contact behavior of the sealing mating surfaces is significantly different from that under conventional operating conditions, making it very easy for conventionally designed and manufactured valves to perform poorly under extreme operating conditions, and even lead to functional failure, resulting in major accidents with rocket destruction and loss of life, and causing serious negative social impact. Therefore, conducting micro-motion-collision friction tests on materials under wide temperature conditions is conducive to in-depth understanding of the evolution of friction and wear, failure mechanisms, and correlation laws of valve materials in extreme environments.

[0049] Therefore, in order to solve the above technical problems, the embodiment of the present application provides a material testing machine, which is provided with a first fixing member, a second fixing member and a detection component. During the test, the first test piece is fixed by the first fixing member, and the second test piece is fixed by the second fixing member; when the first fixing member and the second fixing member are in the first state, the first test piece and the second test piece are in sliding contact, and the detection component detects the friction force and / or friction sound between the first test piece and the second test piece, thereby enabling a material friction test; when the first fixing member and the second fixing member are in the second state, the detection component detects the collision force exerted on the first test piece or the second test piece, thereby enabling a material collision test, so that the material testing machine can be used for both friction and wear tests of materials and collision tests of materials, thereby solving the problem that the test equipment has relatively single functions and low test efficiency.

[0050] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0051] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0052] Reference Figure 1 , an embodiment of the present application provides a material testing machine, including a body 1, a first fixing member 2, a second fixing member 3 and a detection component 4; wherein the first fixing member 2 and the second fixing member 3 are both installed on the body 1, the first fixing member 2 is used to install a first test piece 6, and the second fixing member 3 is used to install a second test piece 7; when the first fixing member 2 and the second fixing member 3 are in a first state, the first test piece 6 and the second test piece 7 are in sliding contact, so that a friction and wear test can be performed; when the first fixing member 2 and the second fixing member 3 are in a second state, the first fixing member 2 drives the first test piece 6 to collide with the second test piece 7, so that a collision test can be performed.

[0053] Continue to refer to Figure 1 As for the detection component 4, it is used to detect target parameters, wherein, when the first fixing member 2 and the second fixing member 3 are in the first state, the target parameters include the friction force between the first test piece 6 and the second test piece 7, and / or the friction sound; when the first fixing member 2 and the second fixing member 3 are in the second state, the target parameters include the collision force exerted on the first test piece 6 or the second test piece 7.

[0054] By adopting the above technical solution, the first test piece 6 is fixed by the first fixing member 2, and the second test piece 7 is fixed by the second fixing member 3; when a friction and wear test of the material is required, the first fixing member 2 and the second fixing member 3 are adjusted to the first state, so that the first test piece 6 and the second test piece 7 are in sliding contact, and the detection component 4 detects the friction force and / or friction sound between the first test piece 6 and the second test piece 7, thereby realizing the friction and wear test of the material; when a collision test of the material is required, the first fixing member 2 and the second fixing member 3 are adjusted to the second state, the first fixing member 2 drives the first test piece 6 to collide with the second test piece 7, and the detection component 4 detects the collision force exerted on the first test piece 6 or the second test piece 7, thereby enabling the material collision test. The material testing machine provided in the embodiment of the present application is applied to the wear failure mechanism of special and specialized materials for liquid hydrogen and liquid oxygen valves for launch vehicles under high-frequency micro-motion-collision conditions in a wide temperature range.

[0055] It should be noted that in the embodiments of the present application, for example, the first test piece 6 and the second test piece 7 can both be test pieces for testing, or one of the first test piece 6 and the second test piece 7 can be the test piece, and the other can be used as a test item. It can be adjusted according to the specific circumstances, and the present application does not impose further restrictions on this.

[0056] In the embodiments of this application, for example, reference is made to Figure 1 and Figure 2 A connecting seat 13 is provided on the body 1, and the connecting seat 13 is slidably provided on the body 1 along a first direction. The first fixing member 2 is slidably provided on the connecting seat 13 along a second direction, and a collision device 5 is provided on the connecting seat 13; the second fixing member 3 is slidably provided on the body 1 along the second direction, and a vibrating member 14 is provided on the body 1.

[0057] It is easy to understand that the first direction and the second direction can be set to multiple directions, as long as the first fixing member 2 and the second fixing member 3 can have the first state and the second state. For example, the first direction is set to the vertical direction, and the second direction is set to the horizontal direction.

[0058] For specific settings, refer to Figure 1 and Figure 2For example, when the first fixing member 2 and the second fixing member 3 are in the first state, that is, when the first test member 6 and the second test member 7 are in sliding contact, the connecting seat 13 is in the first position and is fixed relative to the body 1, so that the first test member 6 is fixed to the body 1 in the first direction; while in the second direction, the vibrating member 14 drives the second fixing member 3 to vibrate, so as to drive the first fixing member 2 to slide on the connecting seat 13 along the second direction, and at this time, the first test member 6 slides on the second test member 7, so that the friction and wear test of the material can be carried out. For example, the vibrating member 14 can be made of piezoelectric ceramics, so that the second test member 7 can be driven to vibrate by energizing the piezoelectric ceramics, and high-frequency reciprocating precision driving can be achieved using the piezoelectric ceramics. The vibration frequency of the piezoelectric ceramics is about 30kHz, and the displacement reaches 20um.

[0059] When the first fixing member 2 and the second fixing member 3 are in the second state, that is, when the first test member 6 collides with the second test member 7, the second fixing member 3 is relatively fixed to the body 1; the connecting seat 13 is in the second position and is relatively fixed to the body 1. In the first direction, a gap is provided between the first test member 6 and the second test member 7. The collision device 5 drives the first fixing member 2 to move along the first direction so that the first test member 6 hits the second test member 7, thereby enabling a collision test of the material.

[0060] It should be noted that the first position and the second position need to be adjusted according to actual conditions, wherein the first position needs to be determined based on the abutment between the first test piece 6 and the second test piece 7, while the second position needs to be determined based on the size of the gap between the first test piece 6 and the second test piece 7.

[0061] In the embodiments of this application, for example, reference is made to Figure 1 The detection component 4 includes a friction sensor 41, a sound sensor 42 and a pressure sensor 43; the friction sensor 41 is installed on the connecting seat 13 and is in sliding contact with the first fixing member 2 to detect the friction between the first test member 6 and the second test member 7; the sound sensor 42 is installed on the body 1; the pressure sensor 43 is installed on the connecting seat 13 and is used to detect the pressure exerted on the first fixing member 2 in the first direction.

[0062] By adopting the above technical solution, when a friction and wear test is performed using a material testing machine, the position of the connecting seat 13 is adjusted so that the connecting seat 13 drives the first test piece 6 to slide along the first direction and makes the first test piece 6 abut against the second test piece 7, and the pressure sensor 43 can detect the pressure between the first test piece 6 and the second test piece 7, so that the squeezing force of the first test piece 6 on the second test piece 7 can be adjusted; the connecting seat 13 is in the first position and is fixed relative to the machine body 1, so that the first test piece 6 is fixed to the machine body 1 in the first direction but can slide on the connecting seat 13 in the second direction; at this time, the vibrating member 14 drives the second fixing member 3 to vibrate, so as to drive the first fixing member 2 to slide on the connecting seat 13 in the second direction, and at this time, the first test piece 6 slides on the second test piece 7, the friction sensor 41 detects the friction between the first test piece 6 and the second test piece 7, and the sound sensor 42 detects the noise generated by the friction between the first test piece 6 and the second test piece 7 and records the peak value of the sound wave, so that the friction and wear test of the material can be completed.

[0063] When a collision test is performed using a material testing machine, the position of the connecting seat 13 is adjusted so that the connecting seat 13 drives the first test piece 6 to slide along the first direction, and there is a gap between the first test piece 6 and the second test piece 7. Then the collision device 5 drives the first fixing piece 2 to move along the first direction so that the first test piece 6 hits the second test piece 7. The pressure sensor 43 detects the collision force generated by the collision between the first test piece 6 and the second test piece 7, so that a collision test of the material can be performed.

[0064] In the embodiments of this application, for example, reference is made to Figure 1 and Figure 3 Detection assembly 4 further includes a vibration sensor 44 and / or a travel sensor 45. When first fixture 2 and second fixture 3 are in the first state, vibration sensor 44 is used to detect the vibration frequency and amplitude of second fixture 3; travel sensor 45 is used to detect the vibration displacement of second fixture 3 in the second direction. Vibration sensor 44 and travel sensor 45 can be mounted on body 1 simultaneously, or one of them can be mounted on body 1.

[0065] When the vibrating member 14 drives the second fixing member 3 to vibrate in the second direction, the vibration sensor 44 can detect the vibration frequency and vibration amplitude of the second fixing member 3; and the stroke sensor 45 can detect the vibration displacement of the second fixing member 3 in the second direction, thereby making the test process of the friction and wear test more accurate and obtaining more reference data.

[0066] Reference Figure 1 and Figure 2In the embodiment of the present application, the body 1 further includes a moving device 12, which includes a moving screw 122 and a power element 121. The moving screw 122 extends along the first direction and is rotatably mounted on the body 1 about the first direction. The connecting seat 13 is threadedly connected to the moving screw 122. The power element 121 is mounted on the body 1 and is used to drive the moving screw 122 to rotate, thereby causing the moving screw 122 to drive the connecting seat 13 to move along the first direction. The body 1 is also provided with a sliding rod 123, which extends along the first direction and penetrates the connecting seat 13, thereby providing a certain guidance for the sliding process of the connecting seat 13.

[0067] By adopting the above technical solution, when the position of the connecting seat 13 in the first direction is adjusted, the power element 121 drives the moving screw 122 to rotate around the first direction, and the moving screw 122 is threadedly connected to the connecting seat 13, so that the connecting seat 13 can move along the first direction on the moving screw 122, thereby realizing the adjustment of the position of the connecting seat 13, and then completing the adjustment of the pressure of the first test piece 6 on the second test piece 7 in the friction and wear test, as well as the adjustment of the gap size between the first test piece 6 and the second test piece 7 in the collision test.

[0068] As for the power element 121, it can be implemented by a variety of devices or equipment, such as an electric motor or a reduction motor, as long as the normal rotation of the moving screw 122 can be guaranteed. It is worth mentioning that when the power element 121 uses a reduction motor, the power element 121 can drive the moving screw 122 to rotate at a slower speed, so that the moving speed of the connecting seat 13 on the moving screw 122 is reduced, thereby further ensuring the stability of the connecting seat 13 sliding along the second direction on the moving screw 122.

[0069] The structure of the second fixing member 3 and the installation method of the second fixing member 3 are described below. Figure 3 and Figure 4 In the embodiment of the present application, illustratively, the second fixing member 3 includes a second fixing portion 31, a first chuck 32, a second chuck 33 and a fixing screw 34; wherein the first chuck 32 is fixedly mounted on the second fixing portion 31, the second chuck 33 is arranged opposite to the first chuck 32, and is slidably mounted on the second fixing portion 31 in a direction approaching or away from the first chuck 32, so that the first chuck 32 and the second chuck 33 can be used to fix the second test piece 7, and the fixing screw 34 is threadedly connected to the second fixing portion 31 and is in tight contact with the second chuck 33.

[0070] Continue to refer to Figure 3 and Figure 4Exemplarily, the first chuck 32 and the second chuck 33 are arranged along the third direction, and the second chuck 33 is further provided with a plurality of guide rods 331. Each guide rod 331 extends along the third direction. The first end of the guide rod 331 is connected to the second chuck 33, and the second end of the guide rod 331 passes through the second fixing portion 31. Furthermore, an extended spring is sleeved on the guide rod 331, with one end of the spring connected to the second end of the guide rod 331 and the other end connected to the second fixing portion 31. A guide portion 311 is further provided on the second main body. The guide portion 311 extends along the third direction and passes through the second chuck 33, thereby providing a certain degree of guidance for the movement of the second chuck 33.

[0071] By adopting the above technical solution, when the second test piece 7 is fixed by the second fixing member 3, the second test piece 7 is placed on the second fixing portion 31 and is located between the first chuck 32 and the second chuck 33. The spring is compressed, driving the second chuck 33 to move in the direction close to the first chuck 32, so that the second chuck 33 and the first chuck 32 clamp the second test piece 7; and the guide portion 311 is passed through the second chuck 33, so that it can play a certain guiding role, and then the fixing screw 34 is tightened so that the fixing screw 34 is threadedly connected to the second fixing portion 31 and tightly abuts against the second chuck 33, so that the second test piece 7 is fixed by the second fixing member 3.

[0072] The following describes the installation method between the second fixing member 3 and the body 1 with reference to the accompanying drawings. Figure 3 and Figure 4 For example, in the horizontal plane, the third direction is perpendicular to the second direction. The body 1 is provided with a mounting frame 11, and the mounting frame 11 is provided with two limit rods 111. The two limit rods 111 both extend in the second direction and are both arranged on the second fixing portion 31. The vibrating member 14 has a vibration axis 141, and the vibration axis 141 of the vibrating member 14 extends in the second direction and passes through the mounting frame 11. The vibration axis 141 of the vibrating member 14 is connected to a connecting block 1411, thereby being connected to the second fixing portion 31 through the connecting block 1411, thereby being able to drive the second fixing portion 31 to vibrate in the second direction. The vibration sensor 44 is installed between the vibrating member 14 and the vibration axis 141, so that the detection of the vibration sensor 44 is more accurate. The travel sensor 45 is installed on the side of the mounting frame 11 away from the vibrating member 14 in the second direction, and the travel sensor 45 is provided with a detection rod 451. The detection rod 451 extends in the second direction and passes through the mounting frame 11 and abuts against the second fixing portion 31.

[0073] Reference Figure 2 and Figure 5-7In the embodiment of the present application, for example, a mounting base 51 is slidably provided on the connecting seat 13, and the mounting base 51 can slide on the connecting seat 13 along the second direction, and the collision device 5 is mounted on the mounting base 51, so that the collision device 5 can be mounted on the connecting seat 13 through the mounting base 51. Specifically, the collision device 5 includes a mounting seat 52 and a sliding post 53, the mounting seat 52 is mounted on the mounting base 51, and the sliding post 53 is connected to the first fixing member 2; when the sliding post 53 is in a first state, the sliding post 53 is fixed to the mounting seat 52; when the sliding post 53 is in a second state, the sliding post 53 slides on the mounting seat 52 along the first direction, so as to drive the first test piece 6 to collide with the second test piece 7 through the first fixing member 2.

[0074] By adopting the above technical solution, when a collision test is performed using a material testing machine, the position of the connecting seat 13 is adjusted so that the connecting seat 13 moves along the first direction, and there is a gap between the first test piece 6 and the second test piece 7, and the sliding column 53 is adjusted so that the sliding column 53 is in the first state and the sliding column 53 is fixed to the mounting seat 52; then the sliding column 53 is adjusted to the second state so that the sliding column 53 slides on the mounting seat 52 along the first direction and drives the first test piece 6 to move toward the direction close to the second test piece 7, and the first test piece 6 hits the second test piece 7, thereby realizing the collision test process of the material.

[0075] Reference Figure 1 and Figure 5-7 The first fixing member 2 is mounted on one end of the sliding post 53 along the first direction, close to the second fixing member 3. The pressure sensor 43 is disposed between the first fixing member 2 and the sliding post 53. That is, the pressure sensor 43 is connected to the sliding post 53, and the first fixing member 2 is connected to the pressure sensor 43, thereby making the detection results of the pressure sensor 43 more accurate. The friction sensor 41 is mounted on the connecting seat 13 and abuts against the mounting base 51, thereby enabling the detection of the friction between the first test piece 6 and the second test piece 7.

[0076] Continue to refer to Figure 5-7 , exemplarily, the mounting seat 52 is provided with a connected sliding groove 522 and a fixed groove 521; the sliding groove 522 extends along a first direction, and an angle is formed between the extension direction of the fixed groove 521 and the first direction; a control head 531 is provided on the sliding column 53, and when the sliding column 53 is in a first state, the control head 531 is clamped in the fixed groove 521, so that the sliding column 53 can be fixed to the mounting seat 52, and when the sliding column 53 is in a second state, the control head 531 slides in the sliding groove 522 along the first direction, thereby driving the first test piece 6 to collide with the second test piece 7 through the first fixing piece 2.

[0077] Reference Figure 5-7The collision device 5 also includes an adjusting component 54, which includes a first elastic member 541 and a driving member 542. The driving member 542 is installed on the mounting base plate 51 and has a piston rod. The first end of the first elastic member 541 is connected to the sliding column 53, and the second end of the first elastic member 541 is connected to the piston rod of the driving member 542. The extension and contraction direction of the first elastic member 541 is the first direction; when the sliding column 53 is in the first state, the driving member 542 drives the first elastic member 541 to compress.

[0078] By adopting the above technical solution, when a collision test is performed using a material testing machine, the control head 531 is first adjusted so that the control head 531 is in the fixed groove 521, thereby placing the sliding column 53 in the first state; then the piston rod of the driving member 542 is shortened, thereby driving the first elastic member 541 to compress; then the position of the control head 531 is adjusted so that the control head 531 moves into the sliding groove 522, and the first elastic member 541 is extended, thereby driving the sliding column 53 to move in the first direction, and the control head 531 slides in the sliding groove 522 in the first direction, thereby driving the first test piece 6 to move in the first direction.

[0079] It should be noted that the collision device 5 can adjust the compression amount of the first elastic member 541 by adjusting the length of the piston rod, so that the moving speed of the sliding column 53 along the first direction can be adjusted by the adjustment component 54, thereby adjusting the moving speed of the first test piece 6 and obtaining collision results at different speeds, thereby making the collision test results of the material more accurate; and in the embodiment of the present application, the test impact force of the collision device 5 can also be adjusted by changing the wire diameter of the first elastic member, thereby realizing the technical advantage of controllable and adjustable test impact force, filling the gap in the existing technology.

[0080] Reference Figure 5-7 In the embodiment of the present application, illustratively, the collision device 5 also includes a rebound component 55, and the rebound component 55 includes a rebound member 551 and a second elastic member 552; the rebound member 551 is connected to the piston rod of the driving member 542, and is slidably arranged on the mounting seat 52 along the first direction, the rebound member 551 is cylindrical, and the opening of the rebound member 551 is facing the mounting substrate 51, the sliding column 53 and the first elastic member 541 are both arranged on the inner side of the rebound member 551, and the first elastic member 541 is connected to the rebound member 551; the first end of the second elastic member 552 is connected to the mounting substrate 51, the second end of the second elastic member 552 is connected to the rebound member 551, and the telescopic direction of the second elastic member 552 is the first direction.

[0081] By adopting the above technical solution, when the piston rod of the driving member 542 is shortened, thereby driving the first elastic member 541 to be compressed, the rebound member 551 compresses the second elastic member 552, causing the second elastic member 552 to be compressed; when the control head 531 slides from the fixed groove 521 to the sliding groove 522, the sliding column 53 moves along the first direction. At this time, the sliding column 53 passes between the second elastic member 552, and the second elastic member 552 extends, thereby driving the rebound member 551 to reset.

[0082] Attached below Figure 7 and Figure 8 The first fixing member 2 and the installation method between the first fixing member 2 and the pressure sensor 43 are described. For example, the first fixing member 2 includes a first fixing portion 21, a first clamping plate 22, a second clamping plate 23 and a driving screw 24; the first clamping plate 22 is fixedly installed on the first fixing portion 21, the second clamping plate 23 is arranged opposite to the first clamping plate 22, and can be slidably installed on the first fixing portion 21 in a direction close to or away from the first clamping plate 22; the driving screw 24 is threadedly connected to the first fixing portion 21, and the driving screw 24 can be rotatably connected to the second clamping plate 23, so that the driving screw 24 can be used to adjust the distance between the second clamping plate 23 and the first clamping plate 22.

[0083] By adopting the above-mentioned technical solution, when the first test piece 6 is clamped by the first fixing member 2, the first test piece 6 is placed between the first clamping plate 22 and the second clamping plate 23, and then the driving screw 24 is rotated so that the driving screw 24 drives the second clamping plate 23 to move toward the direction close to the first clamping plate 22, thereby clamping the first test piece 6.

[0084] Reference Figure 8 , considering that the first test piece 6 can be set to a variety of shapes, in the embodiment of the present application, for example, a first clamping block 221 is provided on the first splint 22, and a second clamping block 231 is correspondingly provided on the second splint 23, and the first clamping block 221 and the second clamping block 231 are used in conjunction with each other and are arranged on the side where the first splint 22 and the second splint 23 are close to each other, so that the first clamping block 221 and the second clamping block 231 can be used to clamp the first test piece 6, so that the first fixing member 2 has a better fixing effect on the first test piece 6, and by adopting the first clamping block 221 and the second clamping block 231 to cooperate, the first fixing member 2 can clamp and fix the first test piece 6 by one or more methods of point contact, line contact and surface contact; as for the way the first clamping block 221 is installed on the first splint 22 and the way the second clamping block 231 is installed on the second splint 23, both can be achieved by a variety of methods, such as welding or bolting, etc., and the present application does not impose further restrictions on this.

[0085] By adopting the above technical solution, when the first fixing member 2 is used to clamp the first test member 6, the first clamping block 221 and the second clamping block 231 are used in conjunction with each other, so that the first test member 6 can be fixed, and first test members 6 of various shapes can be clamped, such as cylindrical or spherical, making the use of the first fixing member 2 more convenient.

[0086] It should be noted that in the embodiment of the present application, the first fixing member 2 and the second fixing member 3 both adopt a flexible clamping structure, so that the clamping force of the first fixing member 2 on the first test member 6 and the clamping force of the second fixing member 3 on the second test member 7 can be controlled and adjusted, thereby compensating for the problem of accuracy of test parameters of friction and wear tests and collision tests caused by unstable clamping force.

[0087] Continue to refer to Figure 8 In the embodiment of the present application, for example, the first clamping plate 22 and the second clamping plate 23 are arranged along the third direction; the side of the pressure sensor 43 away from the sliding column 53 is connected to the first fixing portion 21, so that the first fixing member 2 can be installed on the sliding column 53 through the pressure sensor 43, and the detection effect of the pressure sensor 43 is more accurate.

[0088] It is easy to understand that the pressure sensor 43 can be rotatably connected to the sliding column 53, so that it will not rotate with the sliding column 53 when the sliding column 53 rotates; or the pressure sensor 43 can also be fixedly installed on the sliding column 53, so that when the sliding column 53 rotates, it will drive the pressure sensor 43 to rotate. At this time, the wires used to power the pressure sensor 43 or for communication need to be made of a softer material to avoid the wires affecting the rotation process of the pressure sensor 43.

[0089] To sum up, when a friction and wear test is performed using a material testing machine, the position of the connecting seat 13 is adjusted so that the connecting seat 13 drives the first test piece 6 to slide along the first direction and makes the first test piece 6 abut against the second test piece 7, and the pressure sensor 43 can detect the pressure between the first test piece 6 and the second test piece 7, so that the squeezing force of the first test piece 6 on the second test piece 7 can be adjusted; the connecting seat 13 is in the first position and is fixed relative to the machine body 1, so that the first test piece 6 is fixed to the machine body 1 in the first direction, but can slide on the connecting seat 13 along the second direction; at this time, the vibrating member 14 drives the second fixing member 3 to vibrate, so as to drive the first fixing member 2 to slide on the connecting seat 13 along the second direction, and at this time the first test piece 6 slides on the second test piece 7, the friction sensor 41 detects the friction between the first test piece 6 and the second test piece 7, and the sound sensor 42 detects the noise generated by the friction between the first test piece 6 and the second test piece 7, and records the peak value of the sound wave, so that the friction and wear test of the material can be completed.

[0090] When a collision test is performed using a material testing machine, the position of the connecting seat 13 is adjusted so that the connecting seat 13 drives the first test piece 6 to slide along the first direction, and a gap is formed between the first test piece 6 and the second test piece 7. Then the collision device 5 drives the first fixing piece 2 to move along the first direction so that the first test piece 6 hits the second test piece 7. The pressure sensor 43 detects the collision force generated by the collision between the first test piece 6 and the second test piece 7, so that a collision test of the material can be performed, so that the material testing machine can be used for both friction and wear tests of the material and collision tests of the material, which solves the problem of the relatively single function of the testing equipment.

[0091] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0092] It should be understood that the present application is not limited to the exact structure described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A material testing machine, characterized in that: It includes a body, a first fixing member, a second fixing member and a detection component; The first fixing member and the second fixing member are both mounted on the machine body, the first fixing member is used to mount a first test member, and the second fixing member is used to mount a second test member; when the first fixing member and the second fixing member are in a first state, the first test member and the second test member are in sliding contact; when the first fixing member and the second fixing member are in a second state, the first fixing member drives the first test member to collide with the second test member; The detection component is used to detect a target parameter, and when the first fixing member and the second fixing member are in the first state, the target parameter includes a friction force between the first test member and the second test member, and / or a friction sound generated by sliding contact between the first test member and the second test member; When the first fixing member and the second fixing member are in the second state, the target parameter includes a collision force applied to the first test member or the second test member; The body is provided with a connecting seat, the connecting seat is slidably provided on the body along a first direction, the first fixing member is slidably provided on the connecting seat along a second direction, the second direction being perpendicular to the first direction, the connecting seat is provided with a collision device; the second fixing member is slidably provided on the body along the second direction, and the body is provided with a vibrating member; When the first fixing member and the second fixing member are in the first state, the connecting base is in the first position and is fixed relative to the body; in the second direction, the vibrating member drives the second fixing member to vibrate, thereby driving the first fixing member to slide on the connecting base along the second direction; When the first fixing member and the second fixing member are in the second state, the second fixing member is fixed relative to the body; the connecting seat is in the second position and is fixed relative to the body, and in the first direction, a gap is set between the first test member and the second test member, and the collision device drives the first fixing member to move along the first direction so that the first test member hits the second test member.

2. The material testing machine according to claim 1, characterized in that The detection component includes a friction sensor, a sound sensor and a pressure sensor; The friction sensor is mounted on the connecting seat and in sliding contact with the first fixing member to detect the friction force of the sliding contact between the first test member and the second test member; The sound sensor is mounted on the body and is used to detect the friction sound generated by the sliding contact between the first test piece and the second test piece; The pressure sensor is mounted on the connecting seat and is used to detect the pressure applied to the first fixing member in the first direction.

3. The material testing machine according to claim 2, characterized in that: The detection component also includes a vibration sensor and / or a travel sensor; When the first fixing member and the second fixing member are in the first state, the vibration sensor is used to detect the vibration frequency and vibration amplitude of the second fixing member; and the stroke sensor is used to detect the vibration displacement of the second fixing member in the second direction.

4. The material testing machine according to claim 1, characterized in that The collision device includes a mounting seat, a sliding column and a mounting base plate, wherein the mounting base plate is mounted on the connecting seat, the mounting seat is connected to the mounting base plate, and the sliding column is connected to the first fixing member; When the sliding column is in the first state, the sliding column is fixed to the mounting seat; when the sliding column is in the second state, the sliding column slides on the mounting seat along the first direction to drive the first test piece to collide with the second test piece through the first fixing piece.

5. The material testing machine according to claim 4, characterized in that The collision device further includes an adjustment assembly, the adjustment assembly including a first elastic member and a driving member, the driving member being mounted on the mounting base and having a piston rod, a first end of the first elastic member being connected to the sliding column, a second end of the first elastic member being connected to the piston rod of the driving member, and the first elastic member extending and retracting in the first direction; When the sliding post is in the first state, the driving member drives the first elastic member to compress.

6. The material testing machine according to claim 5, characterized in that: The collision device further includes a rebound assembly, which includes a rebound member and a second elastic member; The resilient member is connected to the piston rod of the driving member and is slidably arranged on the mounting seat along the first direction, and the first elastic member is connected to the resilient member; The first end of the second elastic member is connected to the mounting substrate, the second end of the second elastic member is connected to the resilient member, and the expansion and contraction direction of the second elastic member is the first direction.

7. The material testing machine according to claim 4, characterized in that The mounting seat is provided with a sliding groove and a fixed groove that are connected to each other; the sliding groove extends along the first direction, and an angle is formed between the extending direction of the fixed groove and the first direction; The sliding column is provided with a control head. When the sliding column is in the first state, the control head is clamped in the fixing groove. When the sliding column is in the second state, the sliding column slides in the sliding groove along the first direction.

8. The material testing machine according to claim 1, wherein: The machine body is provided with a moving device, which includes a moving screw and a power element; The movable screw extends along the first direction and is rotatably mounted on the machine body around the first direction. The connecting seat is threadedly connected to the movable screw. The power element is mounted on the machine body and is used to drive the movable screw to rotate.

9. The material testing machine according to any one of claims 1 to 8, characterized in that: The first fixing member includes a first fixing portion, a first clamping plate, a second clamping plate and a driving screw; The first clamping plate is fixedly mounted on the first fixing portion, and the second clamping plate is arranged opposite to the first clamping plate and is slidably mounted on the first fixing portion in a direction approaching or moving away from the first clamping plate; the driving screw is threadedly connected to the first fixing portion, and the driving screw is rotatably connected to the second clamping plate; And / or, the second fixing member includes a second fixing portion, a first clamp, a second clamp and a fixing screw; The first chuck is fixedly mounted on the second fixing portion, the second chuck is arranged opposite to the first chuck, and is slidably mounted on the second fixing portion in a direction approaching or moving away from the first chuck, and the fixing screw is threadedly connected to the second fixing portion and tightly abuts against the second chuck.

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