Tensile testing device

Abstract

The utility model discloses a tensile testing device which comprises a sliding rail, a clamping mechanism and a locking mechanism, the locking mechanism comprises a sliding block, a lock catch, a locking piece and an adjusting piece, the sliding block can slide along the sliding rail, and the sliding block, the locking piece and the adjusting piece are all movably connected with the lock catch; the locking piece is used for driving the lock catch to approach the sliding rail and abut against the sliding rail so as to limit the lock catch and the sliding block to slide along the sliding rail. The adjusting piece is arranged to drive the lock catch to overcome the acting force of the locking piece and to be away from the sliding rail when moving in the direction away from the sliding rail. The clamping mechanism comprises a movable clamping piece used for clamping a to-be-tested material, the movable clamping piece is connected with the sliding block, and the movable clamping piece is arranged to be capable of driving the sliding block to overcome the acting force between the lock catch and the sliding rail and slide along the sliding rail when being pulled.

Description

Technical Field

[0001] The present application belongs to the technical field of testing equipment, and in particular to a tensile testing device. Background Art

[0002] Tensile test refers to a test method for measuring material properties under axial tensile load. The data obtained from the tensile test can be used to determine the tensile strength, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile performance indicators of the material.

[0003] In a conventional tensile strength test, the material to be tested needs to be stretched until it breaks. After the test is completed, usually only the tensile strength can be intuitively obtained, and other data such as the stretching amount need to be measured separately, resulting in low test efficiency. Utility Model Content

[0004] The embodiment of the present application provides a tensile testing device capable of measuring the tensile amount of a material to be tested.

[0005] The present application provides a tensile testing device, including a slide rail, a clamping mechanism and a locking mechanism, the locking mechanism including a slider, a lock, a locking member and an adjusting member, the slider is configured to be able to slide along the slide rail, the slider, the locking member and the adjusting member are all movably connected to the lock, the locking member is used to drive the lock to approach the slide rail and abut against the slide rail, thereby limiting the lock and the slider from sliding along the slide rail, the adjusting member is configured to drive the lock to overcome the force of the locking member and move away from the slide rail when moving in a direction away from the slide rail; the clamping mechanism includes a movable clamping member for clamping a material to be tested, the movable clamping member is connected to the slider, and the movable clamping member is configured to drive the slider to overcome the force between the lock and the slide rail and slide along the slide rail when subjected to a tensile force.

[0006] According to the implementation scheme of the first aspect of the present application, the locking mechanism also includes a pin shaft, and the slider and the lock buckle are rotatably connected by the pin shaft; the locking member is a torsion spring, and the locking member is sleeved on the pin shaft, and the locking member is used to drive the lock buckle to rotate along a first direction through the pin shaft and approach the slide rail and finally abut against the slide rail. The adjusting member is configured to drive the lock buckle to overcome the force of the locking member when moving in a direction away from the slide rail and rotate along a second direction through the pin shaft and then move away from the slide rail. The first direction and the second direction are both circumferential directions of the pin shaft and are in opposite directions.

[0007] According to the implementation of the first aspect of the present application, the two active ends of the locking member are respectively connected to the slider and the lock buckle.

[0008] According to the implementation scheme of the first aspect of the present application, the lock includes a first acting part and a second acting part that are relatively arranged, the second acting part is located on the side of the first acting part away from the slide rail, a through hole is provided on the second acting part, a chamber is formed between the first acting part and the second acting part, one of the acting ends of the locking member is located in the chamber and connected to the first acting part; the adjusting member includes a handle, a connecting rod and a clamping joint that are connected in sequence, the clamping joint is located in the chamber, the connecting rod passes through the through hole, and the handle is located on the side of the lock away from the slide rail.

[0009] According to the implementation of the first aspect of the present application, it also includes a shell, a receiving cavity is provided inside the shell, and the slide rail, the clamping mechanism and the locking mechanism are all located in the receiving cavity.

[0010] According to the implementation of the first aspect of the present application, the accommodating chamber is a vacuum environment, or the accommodating chamber is filled with liquid, or the accommodating chamber is filled with gas.

[0011] According to the implementation scheme of the first aspect of the present application, an injection port and an exhaust port connected to the accommodating cavity are provided on the shell, the injection port is used to inject liquid and / or gas into the accommodating cavity, and the exhaust port is used to exhaust the liquid and / or gas in the accommodating cavity.

[0012] According to the implementation of the first aspect of the present application, it also includes a pull rod, which is connected to the movable clamping member, and the side of the pull rod facing away from the movable clamping member extends out of the accommodating cavity.

[0013] According to the implementation of the first aspect of the present application, the clamping mechanism also includes a fixed clamping member, which is spaced apart from a movable clamping member along the extension direction of the slide rail, and the fixed clamping member and the movable clamping member are respectively used to clamp the two ends of the material to be tested.

[0014] According to an implementation of the first aspect of the present application, the slide rail is provided with a scale arranged along the extension direction of the slide rail; and / or the tensile testing device further includes a dynamometer connected to the movable clamping member.

[0015] The tensile testing device of the embodiment of the present application comprises a slide rail, a clamping mechanism and a locking mechanism, wherein the locking mechanism comprises a slider, a lock, a locking piece and an adjusting piece, wherein the slider is configured to be able to slide along the slide rail, and the slider, the locking piece and the adjusting piece are all movably connected to the lock, and the locking piece is used to drive the lock to approach the slide rail and abut against the slide rail, thereby limiting the lock and the slider from sliding along the slide rail, and the adjusting piece is configured to drive the lock to overcome the force of the locking piece and move away from the slide rail when moving in a direction away from the slide rail; the clamping mechanism comprises a movable clamping piece for clamping a material to be tested, the movable clamping piece is connected to the slider, and the movable clamping piece is configured to drive the slider to overcome the force between the lock and the slide rail and slide along the slide rail when subjected to tension. The present application sets a locking member that is movably connected to the lock, and the locking member is used to drive the lock to move in the direction of the slide rail and abut against the slide rail. The force between the lock and the slide rail restricts the lock and the slider connected to the lock to slide along the slide rail. In the tensile test, the movable clamp is subjected to tension and drives the slider to overcome the force between the lock and the slide rail and slide along the slide rail until the material to be tested is broken. At this time, since the movable clamp is no longer subjected to tension, the force between the lock and the slide rail again restricts the lock and the slider connected to the lock to slide along the slide rail, thereby fixing the locking mechanism on the slide rail. The distance between the position where the locking mechanism stops and the initial position is the stretch amount of the material to be tested, so that the tensile test device of the present application does not need to measure the stretch amount of the material to be tested separately, which significantly improves the test efficiency of the tensile test device. By setting an adjusting member that is also movably connected to the lock, the adjusting member drives the lock to overcome the force of the locking member and move away from the slide rail when moving in the direction away from the slide rail, thereby allowing the slider to slide freely along the slide rail and return to the initial position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the structure of a tensile testing device according to some embodiments of the present application;

[0018] Figure 2 A schematic structural diagram showing another example of a tensile testing device;

[0019] Figure 3 A schematic structural diagram of an exemplary slide rail and a locking mechanism is shown;

[0020] Figure 4 A schematic diagram of an exploded structure of an exemplary locking mechanism is shown;

[0021] Figure 5 A schematic structural diagram showing an example of a slide rail and a locking mechanism at another angle;

[0022] Figure 6 An example is shown Figure 5 A schematic diagram of the cross-sectional structure of the slide rail and the locking mechanism in the AA section;

[0023] Figure 7 An example is shown Figure 6 An enlarged structural diagram of the slide rail and the locking mechanism in position B;

[0024] Figure 8 Another example is shown Figure 6 An enlarged structural diagram of the slide rail and the locking mechanism in position B;

[0025] Fig. 9 A schematic structural diagram of an exemplary clamping mechanism is shown.

[0026] Reference numerals:

[0027] 10. Tensile testing device; 20. Material to be tested;

[0028] 100, slide rail; 110, ruler;

[0029] 200, clamping mechanism; 210, movable clamping member; 211, fixed seat; 212, clamping seat; 213, adjustment handle; 214, base; 215, guide rail; 216, V-shaped groove; 220, fixed clamping member; 201, connecting plate;

[0030] 300, locking mechanism; 310, slider; 320, lock; 321, first action part; 322, second action part; 323, chamber; 324, through hole; 330, locking member; 340, adjusting member; 341, handle; 342, connecting rod; 343, clamping joint; 350, pin;

[0031] 400, housing; 410, accommodating chamber; 420, transparent sealing plate; 430, sealing port; 440, injection port; 450, discharge port;

[0032] 500, tie rod;

[0033] x, extension direction of the slide rail; y, first direction; z, second direction. DETAILED DESCRIPTION

[0034] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0036] In order to solve the technical problems raised in the background technology, the applicant proposed a tensile testing device, a slide rail, a clamping mechanism and a locking mechanism, the locking mechanism including a slider, a lock, a locking piece and an adjusting piece, the slider is configured to be able to slide along the slide rail, the slider, the locking piece and the adjusting piece are all movably connected with the lock, the locking piece is used to drive the lock to approach the slide rail and abut against the slide rail to thereby limit the lock and the slider from sliding along the slide rail, the adjusting piece is configured to drive the lock to overcome the force of the locking piece and move away from the slide rail when moving in a direction away from the slide rail; the clamping mechanism includes a movable clamping piece for clamping the material to be tested, the movable clamping piece is connected to the slider, and the movable clamping piece is configured to drive the slider to overcome the force between the lock and the slide rail and slide along the slide rail when subjected to tension.

[0037] The tensile testing device provided by the present application is provided with a locking member movably connected to the lock, the locking member is used to drive the lock to move in the direction of the slide rail and abut against the slide rail, the force between the lock and the slide rail restricts the lock and the slider connected to the lock to slide along the slide rail, and in the tensile test, the movable clamping member is subjected to tension and drives the slider to overcome the force between the lock and the slide rail and slide along the slide rail until the material to be tested is broken, at this time, since the movable clamping member is no longer subjected to tension, the force between the lock and the slide rail again restricts the lock and the slider connected to the lock to slide along the slide rail, thereby fixing the locking mechanism on the slide rail, and the distance between the position where the locking mechanism stops and the initial position is the stretching amount of the material to be tested, so that the tensile testing device of the present application does not need to measure the stretching amount of the material to be tested separately, and the testing efficiency of the tensile testing device is significantly improved. By providing an adjusting member also movably connected to the lock, the adjusting member drives the lock to overcome the force of the locking member and move away from the slide rail when moving in the direction away from the slide rail, thereby enabling the slider to slide freely along the slide rail and return to the initial position.

[0038] The tensile testing device provided in the embodiment of the present application is introduced below in conjunction with the accompanying drawings. It is noted that the extension direction of the slide rail in the accompanying drawings is denoted as x; one of the circumferential directions of the pin is the first direction, denoted as y; and the other circumferential direction of the pin is the second direction, denoted as z. In the accompanying drawings, for the convenience of drawing, the dimensions in the drawings are not necessarily proportional to the actual dimensions.

[0039] Figure 1 A schematic diagram of the structure of a tensile testing device according to some embodiments of the present application; Figure 2 A schematic structural diagram showing another example of a tensile testing device; Figure 3 A schematic structural diagram of an exemplary slide rail and a locking mechanism is shown; Figure 4 A schematic diagram of the exploded structure of an exemplary locking mechanism is shown. Figure 2 A transparent cover plate is hidden in the device and a clamping mechanism clamps the material to be tested.

[0040] Combination Figures 1 to 4It can be seen that the present application provides a tensile testing device, including a slide rail 100, a clamping mechanism 200 and a locking mechanism 300. The locking mechanism 300 includes a slider 310, a lock 320, a locking member 330 and an adjusting member 340. The slider 310 is configured to be able to slide along the slide rail 100, and the locking member 330, the adjusting member 340 and the slider 310 are all movably connected with the lock 320. The locking member 330 is used to drive the lock 320 to approach the slide rail 100 and abut against the slide rail 100, thereby limiting the lock 320 and the slider 310 from sliding along the slide rail 100. The adjusting member 340 is configured to drive the lock 320 to overcome the force of the locking member 330 and move away from the slide rail 100 when moving in a direction away from the slide rail 100. The clamping mechanism 200 includes a movable clamping member 210 for clamping the material 20 to be tested. The movable clamping member 210 is connected to the slider 310. The movable clamping member 210 is configured to drive the slider 310 to overcome the force between the lock 320 and the slide rail 100 and slide along the slide rail 100 when subjected to tension.

[0041] In some of the implementations, when the lock 320 abuts against the slider 310, the force between the lock 320 and the slider 310 may be a friction force, and / or a pulling force, elastic force, etc. parallel to the extension direction of the slide rail 100. In this embodiment, only the force between the lock 320 and the slider 310 is taken as the friction force as an example.

[0042] In some of the implementations, the material 20 to be tested adopts a longitudinal tensile test, that is, a longitudinal tensile gauge is selected to connect the movable clamp 210, and the movable clamp 210 is pulled upward in the vertical direction during the tensile test. In this scenario, the slide rail 100 also extends in the vertical direction, that is, the extension direction x of the slide rail 100 is parallel to the vertical direction. In this implementation, the tension exerted on the movable clamp 210 not only needs to overcome the force between the lock 320 and the slide rail 100, but also needs to overcome the gravity exerted on the interactive movable clamp 210 and the locking mechanism 300 in order to pull the locking mechanism 300. The lock 320 and the slider 310 are movably connected and move synchronously on the slide rail 100, and the lock 320 can move relative to the slider 310 in a direction close to the slide rail 100 or away from the slide rail 100. At this time, the moving direction of the lock 320 intersects with the vertical direction, for example, the lock 320 can move in the horizontal direction relative to the slider 310. When the lock buckle 320 is in contact with the slide rail 100, since the friction between the lock buckle 320 and the slide rail 100 is greater than the gravity of the locking mechanism 300, the locking mechanism 300 will be fixedly locked on the slide rail 100, and this state can be called a locked state. When the lock buckle 320 is away from the slide rail 100, that is, the lock buckle 320 is not in contact with the slide rail 100, the locking mechanism 300 can slide up and down along the slide rail 100, and this state can be called an active state. The locking member 330 and the adjusting member 340 that are movably connected to the lock buckle 320 are both used to switch the state of the locking mechanism 300, and the locking member 330 is used to drive the lock buckle 320 to switch to the locked state. When the adjusting member 340 moves away from the slide rail 100, it will drive the lock buckle 320 to overcome the force of the locking member 330 and move away from the slide rail 100, so that the locking mechanism 300 remains active. When the adjusting member 340 does not apply external force to the lock buckle 320, the lock buckle 320 will return to the locked state under the action of the locking member 330.

[0043] In the tensile test, the user pulls the longitudinal tensile gauge upward, and the longitudinal tensile gauge pulls the material 20 to be tested through the movable clamp 210 to overcome the force between the lock buckle 320 and the slide rail 100 and slide upward along the slide rail 100 until the material 20 to be tested is broken, and the longitudinal tensile gauge obtains the breaking force of the material 20 to be tested. It can also be understood that even if the locking mechanism 300 is in a locked state, when the pulling force applied by the longitudinal tensile gauge to it is greater than the friction between the lock buckle 320 and the slide rail 100 and its own gravity, the locking mechanism 300 will still be pulled by the longitudinal tensile gauge.

[0044] When the material 20 to be tested is pulled apart, at this time, since the longitudinal tensile gauge no longer applies tension to the lock buckle 320 through the movable clamping member 210, the friction between the lock buckle 320 and the slide rail 100 again restricts the lock buckle 320 and the slider 310 connected to the lock buckle 320 from sliding along the slide rail 100, thereby fixing the locking mechanism 300 on the slide rail 100. The distance between the position where the locking mechanism 300 stops and the initial position is the stretching amount of the material 20 to be tested. When the locking mechanism 300 needs to be reset, it is only necessary to pull the adjusting member 340 to move away from the slide rail 100, and drive the lock buckle 320 to overcome the force of the locking member 330 and move away from the slide rail 100, so that the slider 310 can slide freely along the slide rail 100 and return to the initial position.

[0045] In some of the implementations, in order to improve the accuracy of the breaking force data, the friction value between the lock buckle 320 and the slide rail 100 and the gravity value of the locking mechanism 300 can be tested in advance by a tensile gauge. In the formal tensile test, the friction value between the lock buckle 320 and the slide rail 100 and the gravity value of the locking mechanism 300 can be removed from the data measured by the tensile gauge to obtain accurate breaking force data.

[0046] It is understandable that the pulling direction of the tensile gauge can be adjusted according to actual needs, and the other directions mentioned above will also be adjusted according to the pulling direction of the tensile gauge, which will not be repeated here.

[0047] In some implementations, the friction between the slider 310 and the slide rail 100 is relatively small, so that the slider 310 can slide along the slide rail 100, while the friction between the lock 320 and the slide rail 100 is relatively large, so that when the lock 320 abuts against the slide rail 100, the locking mechanism 300 cannot slide along the slide rail 100. The friction between the slider 310 and the slide rail 100 can also be reduced by means of balls, bearings, lubricating media, etc. The tensile testing device 10 provided in this embodiment is provided with a locking member 330 movably connected to the lock 320, and the locking member 330 is used to drive the lock 320 to move toward the slide rail 100 and abut against the slide rail 100. The force between the lock 320 and the slide rail 100 restricts the lock 320 and the slider 310 connected to the lock 320 from sliding along the slide rail 100. By setting an adjusting member 340 that is also movably connected to the lock 320, the adjusting member 340 drives the lock 320 to overcome the force of the locking member 330 and move away from the slide rail 100 when moving in the direction away from the slide rail 100, so that the slider 310 can slide freely along the slide rail 100 and return to the initial position. By setting a movable clamping member 210 connected to the tensile gauge, when the movable clamping member 210 is subjected to tension, it drives the slider 310 and the lock 320 to overcome the force between the lock 320 and the slide rail 100 and slide along the slide rail 100 until the material 20 to be tested is broken. At this time, the locking mechanism 300 is fixedly locked on the slide rail 100 after losing the tension of the tensile gauge. The distance between the position where the locking mechanism 300 stops and the initial position is the stretch amount of the material to be tested, so that the tensile test device 10 of the present application does not need to measure the stretch amount of the material 20 to be tested separately, which significantly improves the test efficiency of the tensile test device 10.

[0048] After describing the overall structure of the tensile testing device, the locking mechanism is described in detail below with reference to the accompanying drawings. Figure 5 A schematic structural diagram showing an example of a slide rail and a locking mechanism at another angle; Figure 6 An example is shown Figure 5 A schematic diagram of the cross-sectional structure of the slide rail and the locking mechanism in the AA section; Figure 7 An example is shown Figure 6 An enlarged structural diagram of the slide rail and the locking mechanism in position B;

[0049] Figure 8 Another example is shown Figure 6 The enlarged structural diagram of the slide rail and the locking mechanism in position B. Figure 7 The locking mechanism in is in the locked state. Figure 8 The locking mechanism in is active.

[0050] Combination Figure 2 , Figures 4 to 8It can be seen that in some embodiments, the locking mechanism 300 further includes a pin 350, and the slider 310 and the lock catch 320 are rotatably connected via the pin 350. The locking member 330 is a torsion spring, and the locking member 330 is sleeved on the pin 350. The locking member 330 is used to drive the lock catch 320 to rotate along the first direction y through the pin 350 and approach the slide rail 100 and finally abut against the slide rail 100. The adjusting member 340 is configured to drive the lock catch 320 to overcome the force of the locking member 330 and rotate along the second direction z through the pin 350 and then move away from the slide rail 100 when moving in the direction away from the slide rail 100. The first direction y and the second direction z are both circumferential directions of the pin 350 and are in opposite directions.

[0051] In some implementations, the axial direction of the pin shaft 350 intersects with the extension direction of the slide rail 100 .

[0052] It is explained here that since the pin 350 is an axisymmetric figure, the axial direction of the pin 350 refers to the direction in which its central axis extends. The circumferential direction of the pin 350 refers to the circumferential direction of the outer periphery of the shaft body, and the radial direction refers to the direction passing through the central axis in the radial plane, and usually also refers to the linear direction along the diameter or radius, or the linear direction perpendicular to the central axis. It can be understood that in this application, the axial, circumferential, radial, and circumferential surfaces of other components can refer to the relevant description of the pin 350 mentioned above.

[0053] In some implementations, the two active ends of the locking member 330 are respectively connected to the slider 310 and the lock buckle 320, and the locking member 330 is in a compressed state, resulting in the locking member 330 always having a tendency to release elastic potential energy to the lock buckle 320, and the lock buckle 320 is rotatably connected to the slider 310 through the pin 350. When the lock buckle 320 is not subjected to other external forces, the locking member 330 will drive the lock buckle 320 to abut against the slide rail 100.

[0054] In other implementations, the locking member 330 may also be a spring, a tension band, rubber or other components.

[0055] In the tensile testing device 10 provided in this embodiment, the slider 310 and the lock 320 are rotatably connected via the pin 350, so that the lock 320 can be rotated along the axial direction of the pin 350 through the pin 350, thereby switching the locking mechanism 300 between the locked state and the active state.

[0056] In some embodiments, the lock 320 includes a first acting portion 321 and a second acting portion 322 that are arranged opposite to each other, the second acting portion 322 is located at a side of the first acting portion 321 away from the slide rail 100, a chamber 323 is formed between the first acting portion 321 and the second acting portion 322, and one of the acting ends of the locking member 330 is located in the chamber 323 and connected to the first acting portion 321. At least part of the slider 310 is located at a side of the second acting portion 322 away from the slide rail 100, and the slider 310 and the second acting portion 322 are both provided with a coaxial through hole 324, at least part of the adjusting member 340 extends from the through hole 324 into the chamber 323, and the other end of the adjusting member 340 is located at a side of the slider 310 away from the slide rail 100. The slider 310 and the lock 320 are movably connected through the pin 350 and the adjusting member 340.

[0057] The adjusting member 340 includes a handle 341, a connecting rod 342 and a clamping joint 343 which are connected in sequence. The clamping joint 343 is located in the chamber 323. The connecting rod 342 passes through the through hole 324. The handle 341 is located on the side of the lock buckle 320 away from the slide rail 100. The maximum radial dimension of the clamping joint 343 is greater than the maximum radial dimension of the through hole 324. When the user holds the handle 341 and pulls the adjusting member 340 away from the slide rail 100, the clamping joint 343 contacts the second action portion 322 and drives the lock buckle 320 to overcome the action of the locking member 330 so that the lock buckle 320 is in an active state (such as Figure 8 When the user releases the handle 341, the locking member 330 drives the lock buckle 320 to return to the locked state, and the first action portion 321 abuts against the slide rail 100 (as shown in FIG. Figure 7 When the lock catch 320 moves toward the slide rail 100 , the second action portion 322 drives the card connector 343 to move toward the slide rail 100 .

[0058] In some embodiments, there are more than one slide rail 100, and each slide rail 100 has a slider 310, but not necessarily each slider 310 has a lock 320. In the above embodiments, when describing the relative directions between the components of the locking mechanism 300 and the slide rail 100, only the slide rail 100 directly slidably connected to the locking mechanism 300 is considered, and other slide rails 100 are not considered.

[0059] In some implementations, the connecting plate 201 connects the movable clamping member 210 and the slider 310 . When the number of the slide rails 100 exceeds one, the plurality of sliders 310 are connected to the movable clamping member 210 via the connecting plate 201 .

[0060] After describing the implementation of the locking mechanism 300 in the tensile testing device 10 , the implementation of the clamping mechanism 200 in the tensile testing device 10 will be described below with reference to the accompanying drawings. Fig. 9A schematic structural diagram of an exemplary clamping mechanism is shown.

[0061] Combination Figure 2 and Fig. 9 It can be seen that in some of the embodiments, the clamping mechanism 200 also includes a fixed clamping member 220, and the fixed clamping member 220 and the movable clamping member 210 are arranged at intervals along the extension direction x of the slide rail 100, and the fixed clamping member 220 and the movable clamping member 210 are respectively used to clamp the two ends of the material 20 to be tested.

[0062] In the tensile testing device 10 provided in this embodiment, the fixed clamping member 220 is relatively fixed in position, and the movable clamping member 210 is used to connect with the tensile gauge and be pulled by the tensile gauge, so that the movable clamping member 210 and the fixed clamping member 220 can stretch the material 20 to be tested along the extension direction x of the slide rail 100.

[0063] In some of the embodiments, the fixed clamping member 220 and the movable clamping member 210 both include a fixed seat 211, a clamping seat 212 and an adjustment handle 213, the fixed seat 211 is movably connected to the clamping seat 212, and the adjustment handle 213 is connected to the clamping seat 212 and is used to drive the clamping seat 212 to move along the direction of the line connecting the fixed seat 211 and the clamping seat 212.

[0064] In some implementations, the fixed clamping member 220 and the movable clamping member 210 both further include a base 214, the fixed seat 211 is connected to the base 214, and the clamping seat 212 is movably connected to the base 214. A guide rail 215 extending along the line connecting the fixed seat 211 and the clamping seat 212 is provided on the base 214, and the clamping seat 212 is configured to be able to approach or move away from the fixed seat 211 along the guide rail 215. When the clamping seat 212 approaches the fixed seat 211, the clamping seat 212 and the fixed seat 211 jointly clamp the material 20 to be tested, and when the clamping seat 212 moves away from the fixed seat 211, the clamping seat 212 and the fixed seat 211 release the material 20 to be tested. The adjusting handle 213 can drive the clamping seat 212 by directly pushing and pulling along the connecting line between the fixing seat 211 and the clamping seat 212, or the adjusting handle 213 can drive the clamping seat 212 to move by cooperating with the thread on the base 214 and rotating along the axis of the adjusting handle 213.

[0065] In some of the implementations, a V-groove 216 is provided on the side of the clamping seat 212 facing the fixed seat 211 and / or on the side of the fixed seat 211 facing the clamping seat 212. The V-groove 216 can increase the friction between the clamping seat 212, the fixed seat 211 and the material 20 to be tested, and the V-groove 216 can also clamp cylindrical materials, thereby increasing the clamping force of the clamping mechanism 200.

[0066] After describing the implementation of the clamping mechanism 200 in the tensile testing device 10, the implementation of the slide rail 100 in the tensile testing device 10 will be described below in conjunction with the accompanying drawings. Figure 3 It can be seen that in some of the embodiments, a scale 110 is provided on the slide rail 100 and is arranged along the extension direction x of the slide rail 100 .

[0067] In some implementations, when the slider 310 is at an initial position on the slide rail 100 , the slider 310 is aligned with a zero mark on the scale 110 .

[0068] The tensile testing device 10 provided in this embodiment, by setting a scale 110 on the slide rail 100, when the locking mechanism 300 is fixed on the slide rail 100, the stretching amount of the material 20 to be tested can be intuitively obtained through the scale on the scale 110, so that the tensile testing device 10 of the present application does not need to measure the stretching amount of the material 20 to be tested separately, which significantly improves the testing efficiency of the tensile testing device 10.

[0069] After describing the implementation of the slide rail 100 in the tensile testing device 10, the implementation of other components in the tensile testing device 10 will be described below in conjunction with the accompanying drawings. Figure 1 and Figure 2 It can be seen that in some of the embodiments, the tensile testing device 10 further includes a shell 400 , a receiving chamber 410 is provided inside the shell 400 , and the slide rail 100 , the clamping mechanism 200 and the locking mechanism 300 are all located in the receiving chamber 410 .

[0070] In some implementations, a transparent sealing plate 420 is provided on the housing 400, and the transparent sealing plate 420 can be opened and closed. When closed, the accommodating chamber 410 is sealed, and when opened, the accommodating chamber 410 is connected to the outside through the transparent sealing plate 420. The material of the transparent sealing plate 420 includes glass, acrylic, etc. The transparent sealing plate 420 is used to place and take the material 20 to be tested, and enables the user to intuitively see the test situation in the accommodating chamber 410 and the value of the scale 110.

[0071] In some implementations, the tensile testing device further includes a tensile gauge, which is detachably connected to the movable clamp 210 , and at least partially located outside the accommodating cavity 410 .

[0072] In some implementations, the tensile testing device 10 further includes a pull rod 500, the pull rod 500 is connected to the movable clamp 210, and one end of the pull rod 500 away from the movable clamp 210 extends out of the accommodating chamber 410 and is used to connect with the tensile gauge. Among them, the housing 400 is provided with a sealing port 430 for the pull rod 500 to pass through, and the sealing port 430 allows the pull rod 500 to move relative to the housing 400 without destroying the sealing of the accommodating chamber 410. The sealing port 430 can be sealed in the form of a sealing gasket, such as a cross-shaped opening silicone sealing gasket or a circular opening silicone sealing gasket. The tensile testing device 10 provided in this embodiment provides a stable testing environment for the material 20 to be tested by making the slide rail 100, the clamping mechanism 200 and the locking mechanism 300 all located in the accommodating chamber 410, reducing the influence of external factors on the test data, thereby improving the test accuracy. By making the pull rod extend out of the accommodating chamber 410, while ensuring the sealing of the accommodating chamber 410, the user can also operate the tensile gauge outside the accommodating chamber 410 to complete the test. After completing the test, the user can open the transparent cover plate 420 and pull the adjusting member 340 in the accommodating cavity 410 to reset it.

[0073] In some embodiments, the accommodating chamber 410 is in a vacuum environment, or the accommodating chamber 410 is filled with liquid. Since the accommodating chamber 410 has good sealing performance, the accommodating chamber 410 can be evacuated, or liquid or gas can be poured into the accommodating chamber 410. When pouring liquid, the liquid level needs to be higher than the material to be tested 20, that is, the material to be tested 20 needs to be completely located in the liquid. When the accommodating chamber 410 is filled with gas, the gas can be air, pure inert gas, etc.

[0074] In some embodiments, the shell 400 is provided with an injection port 440 and an exhaust port 450 which are connected to the accommodating cavity 410 . The injection port 440 is used to inject liquid and / or gas into the accommodating cavity 410 , and the exhaust port 450 is used to exhaust the liquid and / or gas in the accommodating cavity 410 .

[0075] In some implementations, liquid such as water or oil is injected into the containing chamber 410 through the injection port 440, so that at least the material to be tested 20 in the containing chamber 410 is submerged by the liquid. By submerging the material to be tested 20 with the liquid, the tensile testing device 10 can test the tensile properties of the material to be tested 20 in a liquid environment. The injection port 440 can also inject a specific type of gas into the containing chamber 410, so that the tensile testing device 10 can test the tensile properties of the material to be tested 20 in an environment of a specific gas type.

[0076] In some implementations, the air in the accommodating chamber 410 is extracted through the exhaust port 450 to make the accommodating chamber 410 vacuum, and then the tensile testing device 10 can test the tensile properties of the material 20 to be tested under vacuum. A pressure gauge (not shown) can also be provided on the housing 400 to display the air pressure in the accommodating chamber 410.

[0077] The tensile testing device 10 provided in this embodiment provides an injection port 440 and an outlet 450 on the housing 400 so that the material 20 to be tested can be placed under the liquid surface or in a vacuum environment, thereby improving the testing scenario of the tensile testing device 10 .

[0078] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A tensile testing device, characterized in that: include: Slide rails; The locking mechanism comprises a slider, a lock, a locking member and an adjusting member, wherein the slider is configured to be able to slide along the slide rail, the slider, the locking member and the adjusting member are all movably connected to the lock, the locking member is used to drive the lock to approach the slide rail and abut against the slide rail to thereby restrict the lock and the slider from sliding along the slide rail, and the adjusting member is configured to drive the lock to overcome the force of the locking member and move away from the slide rail when moving in a direction away from the slide rail; The clamping mechanism comprises a movable clamping member for clamping the material to be tested, wherein the movable clamping member is connected to the slider, and the movable clamping member is configured to drive the slider to overcome the force between the lock buckle and the slide rail and slide along the slide rail when subjected to tension.

2. The tensile testing device according to claim 1, characterized in that: The locking mechanism further includes a pin shaft, and the slider and the lock buckle are rotatably connected via the pin shaft; The locking member is a torsion spring, and the locking member is sleeved on the pin shaft. The locking member is used to drive the lock buckle to rotate along a first direction through the pin shaft and approach the slide rail and finally abut against the slide rail. The adjusting member is configured to drive the lock buckle to overcome the action of the locking member when moving in a direction away from the slide rail and rotate along a second direction through the pin shaft and then move away from the slide rail. The first direction and the second direction are both circumferential directions of the pin shaft and are in opposite directions.

3. The tensile testing device according to claim 2, characterized in that: The two active ends of the locking member are respectively connected to the slider and the lock catch.

4. The tensile testing device according to claim 3, characterized in that: The lock buckle comprises a first acting portion and a second acting portion which are arranged opposite to each other, the second acting portion is located at a side of the first acting portion away from the slide rail, a through hole is provided on the second acting portion, a chamber is formed between the first acting portion and the second acting portion, and one of the acting ends of the locking member is located in the chamber and connected to the first acting portion; The adjusting member comprises a handle, a connecting rod and a clamping joint which are connected in sequence, the clamping joint is located in the chamber, the connecting rod passes through the through hole, and the handle is located on a side of the lock buckle away from the slide rail.

5. The tensile testing device according to claim 1, characterized in that: It also includes a shell, a receiving cavity is provided inside the shell, and the slide rail, the clamping mechanism and the locking mechanism are all located in the receiving cavity.

6. The tensile testing device according to claim 5, characterized in that: The accommodating chamber is in a vacuum environment, or is filled with liquid, or is filled with gas.

7. The tensile testing device according to claim 6, characterized in that: The shell is provided with an injection port and a discharge port which are connected with the accommodating cavity. The injection port is used to inject liquid and / or gas into the accommodating cavity, and the discharge port is used to discharge the liquid and / or gas in the accommodating cavity.

8. The tensile testing device according to claim 5, characterized in that: It also includes a pull rod, which is connected to the movable clamping member, and extends out of the accommodating cavity from a side of the pull rod that is away from the movable clamping member.

9. The tensile testing device according to claim 1, characterized in that: The clamping mechanism further comprises a fixed clamping member, wherein the fixed clamping member and the movable clamping member are arranged at intervals along the extending direction of the slide rail, and the fixed clamping member and the movable clamping member are respectively used to clamp two ends of the material to be tested.

10. The tensile testing device according to claim 1, characterized in that: The slide rail is provided with a scale arranged along the extension direction of the slide rail; And / or, the tensile testing device further comprises a dynamometer connected to the movable clamping member.

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