Auxiliary sample mounting device and testing machine

Abstract

The utility model discloses an auxiliary installation device for a sample and a testing machine, and relates to the technical field of plate mechanical property testing, the auxiliary installation device for the sample comprises a clamped piece, a clamping mechanism and an adjusting mechanism, the clamped piece comprises a clamped part and an installation part which are connected with each other, and the clamped part can be arranged on an upper chuck or a lower chuck; the clamping mechanism is used for clamping a sample; one end of the adjusting mechanism is connected with the mounting part, and the other end of the adjusting mechanism is connected with the clamping mechanism, so that the adjusting mechanism can adjust the position of the sample clamped by the clamping mechanism in the space and adjust the included angle between the axial direction of the sample clamped by the clamping mechanism and the extension direction of the axis of a loading chain of the sample; in the process, the sample does not need to be held by a person, and the sample does not need to be detached for adjustment, so that the phenomena that the handheld sample is difficult to install, the handheld sample is not installed in place and the sample is damaged due to repeated clamping are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical property testing of plates, and particularly relates to a specimen auxiliary installation device and a testing machine. Background Art

[0002] Metal plates are widely used in industrial production, and their mechanical properties such as tensile and fatigue are very important performance indicators. Since most metal plates are relatively thin, the specimens for mechanical property testing can only be processed into plate shapes. When installing the plate-shaped specimen, it should be ensured that the axis of the specimen coincides with the axis of the loading chain, so as to ensure that the specimen is only subjected to axial load. However, at present, the positioning and clamping of the plate-shaped specimen are mainly completed by the tester holding it by hand. Due to the technical ability of the tester and the jitter of holding by hand, the following problems are likely to occur when installing the specimen by hand: (1) The specimen is inclined, that is, the axis of the specimen forms a certain angle with the axis of the loading chain; (2) The specimen is not centered, that is, although the axis of the specimen is parallel to the axis of the loading chain, they do not coincide. The inclined installation of the specimen will change the stress state of the specimen, causing the specimen to be subjected to the combined action of axial and transverse loads, resulting in inaccurate test results. In addition, in the test containing axial compression, the inclination of the specimen may cause the specimen to buckle, resulting in the failure of the test. The non-centered installation of the specimen may have a relatively small impact on the test results, but it reduces the perfection and rigor of the test process.

[0003] Another disadvantage of hand-held installation is that the position of the specimen cannot be accurately adjusted. When the specimen is inclined or not centered during installation and needs to be corrected, the specimen can only be removed from the clamping chuck and re-positioned and clamped by hand. However, hand-held positioning cannot accurately control the position and angle of the specimen, and it may be necessary to repeat many times to meet the test requirements. For materials with low hardness, multiple positioning and clamping will cause damage to the clamping part of the specimen, resulting in the fracture of the specimen at the clamping part and causing the failure of the test. In addition, repeatedly clamping the specimen multiple times will also reduce the test efficiency. Therefore, the specimen should be clamped as few times as possible.

[0004] In view of the disadvantages of hand-held installation, the current main solution is to install positioning pieces on the upper and lower chucks of the testing machine. The clamping part of the specimen leans on the same position of the upper and lower positioning pieces at the same time to ensure correct installation. However, when the clamping part of the specimen is short, it cannot touch the positioning piece, and the positioning piece loses its function. When the specimen is short, the space between the upper and lower chucks is small, and there is not enough space for hand-held installation, and the positioning piece also loses its function. In addition, the positioning piece cannot solve the problem of accurately adjusting the position of the specimen mentioned above. Summary of the Utility Model

[0005] The main purpose of the utility model is to propose a specimen auxiliary installation device and a testing machine, aiming to solve the problems that it is not easy to install the existing plate specimens by hand, the specimens installed by hand are easy to be not installed in place, and the phenomenon of damaging the specimens caused by installing the specimens multiple times.

[0006] To achieve the above object, the present utility model provides a specimen auxiliary installation device for assisting in the correct installation of a specimen. The specimen auxiliary installation device includes:

[0007] A clamped part, the clamped part includes a clamped portion and an installation portion connected to each other, and the clamped portion can be arranged on the upper chuck or the lower chuck;

[0008] A clamping mechanism for clamping the specimen;

[0009] An adjusting mechanism, one end of the adjusting mechanism is connected to the installation portion, and the other end of the adjusting mechanism is connected to the clamping mechanism, so that the adjusting mechanism can adjust the position of the specimen clamped by the clamping mechanism in space and adjust the included angle between the axial direction of the specimen clamped by the clamping mechanism and the extending direction of the axis of the loading chain of the specimen.

[0010] In one embodiment, the adjusting mechanism includes a position adjusting component and an angle adjusting component. The installation portion is connected to one end of the position adjusting component, the other end of the position adjusting component is connected to the angle adjusting component, and the end of the angle adjusting component away from the position adjusting component is connected to the clamping mechanism. The position adjusting component can adjust the position of the clamping mechanism in space, and the angle adjusting component can adjust the included angle between the axial direction of the specimen clamped by the clamping mechanism and the extending direction of the axis of the loading chain of the specimen.

[0011] In one embodiment, the position adjusting component includes a first moving platform and a second moving platform. The installation portion is connected to one end of the first moving platform, the other end of the first moving platform is connected to the second moving platform, and the end of the second moving platform away from the first moving platform is connected to the angle adjusting component. The first moving platform can drive the specimen to move along a second direction, and the second moving platform can drive the specimen to move along a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0012] In one embodiment, the installation portion is detachably connected to the first moving platform;

[0013] And / or, the first moving platform and the second moving platform are detachably connected;

[0014] And / or, the second moving platform and the angle adjusting component are detachably connected;

[0015] And / or, the angle adjusting component and the clamping mechanism are detachably connected.

[0016] In one embodiment, the clamped part extends in a first direction, and clamping surfaces are provided on both sides of the clamped part. The angle adjustment assembly can drive the specimen to swing in a plane parallel to the clamping surfaces.

[0017] In one embodiment, the clamping mechanism includes a fixed seat, an adjusting member, and a clamping member. The fixed seat is connected to the adjusting mechanism. The fixed seat is provided with a receiving groove for receiving the specimen. A clamping surface is provided on the groove wall on one side of the receiving groove, and an adjusting member is provided on the groove wall on the other side of the receiving groove. The adjusting member is in transmission connection with the clamping member. The clamping member is located in the receiving groove, and a clamping space is formed between the clamping member and the clamping surface. The adjusting member can adjust the size of the clamping space through the clamping member so that the clamping member and the clamping surface clamp the specimen.

[0018] In one embodiment, the fixed seat is provided with a threaded hole that communicates with the receiving groove. The adjusting member is in screw fit with the threaded hole. One end of the adjusting member is rotatably installed on the clamping member, and a knob is provided at the other end of the adjusting member.

[0019] In one embodiment, the clamping surface is provided with a plurality of scale lines, and the plurality of scale lines are arranged at intervals in a third direction in sequence. The first direction and the third direction are perpendicular.

[0020] The present utility model also provides a testing machine, which includes a driving mechanism, an upper chuck, a lower chuck, and the above-mentioned specimen auxiliary installation device. The upper chuck or the lower chuck can clamp the clamped part. The upper chuck and the lower chuck are both in transmission connection with the driving mechanism, and the driving mechanism can drive the upper chuck and the lower chuck to approach or move away from each other.

[0021] In one embodiment, the testing machine further includes a calibration member for detecting whether the axis of the specimen coincides with the axis of the loading chain of the specimen.

[0022] The technical solution of the present utility model clamps the clamped part through the upper chuck or the lower chuck of the testing machine. Taking the upper chuck as an example, the upper chuck clamps the clamped part, then clamps one end of the specimen through the clamping mechanism, and then adjusts the position of the specimen in space through the adjusting mechanism so that the axis of the specimen coincides with the axis of the loading chain. Then, the other end of the specimen is clamped by the lower chuck, and then the clamping of the specimen by the clamping mechanism is released. Next, the clamping of the clamped part by the upper chuck is released, thereby removing the specimen auxiliary installation device. Finally, the upper chuck clamps the end of the specimen away from the lower chuck, thus realizing the clamping of the specimen at the correct position. Among them, for shorter specimens that are not convenient to install by hand, the technical solution of the present utility model sets a clamped part that is easily clamped by the upper chuck. When the upper chuck clamps the clamped part, it is equivalent to the upper chuck clamping the first end of the specimen. Then, the other end of the specimen is clamped by the lower chuck, the specimen auxiliary installation device is removed, and then the upper chuck clamps the end of the specimen away from the lower chuck. This process does not require personnel to hold the specimen by hand, thus solving the problem of difficult installation of shorter specimens by hand. By adjusting the position and swing angle of the specimen in space through the adjusting mechanism, the problems of specimen misalignment and specimen inclination that are likely to occur during the installation of the specimen by hand are solved. By adjusting the position and swing angle of the specimen through the adjusting mechanism so that the axis of the specimen coincides with the axis of the loading chain, the precise position adjustment of the specimen and the vertical installation of the specimen are realized. And during the entire installation process, there is no need to unload the specimen, thus avoiding the phenomenon of specimen damage caused by clamping the specimen multiple times. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a schematic structural diagram of the specimen provided by the present utility model in different positions relative to the upper chuck and the lower chuck;

[0025] Figure 2 It is a schematic structural diagram of an embodiment of the specimen auxiliary installation device provided by the present utility model;

[0026] Figure 3 It is a schematic structural diagram of an embodiment of the clamping mechanism clamping the specimen provided by the present utility model;

[0027] Figure 4 It is a schematic structural diagram of another perspective of an embodiment of the clamping mechanism clamping the specimen provided by the present utility model.

[0028] Explanation of the reference numerals in the drawings:

[0029] 100. Specimen auxiliary installation device; 1. Workpiece to be clamped; 11. Clamping part; 12. Installation part; 2. Clamping mechanism; 21. Fixed seat; 211. Accommodating groove; 212. Clamping surface; 213. Scale line; 22. Adjusting member; 221. Knob; 23. Clamping piece; 3. Adjusting mechanism; 31. Position adjusting assembly; 311. First moving platform; 312. Second moving platform; 32. Angle adjusting assembly;

[0030] 201. Upper chuck; 202. Lower chuck; 300. Specimen.

[0031] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions such as "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0035] Metal sheets are widely used in industrial production, and their mechanical properties such as tensile and fatigue are very important performance indicators. Since most metal sheets are relatively thin, the test specimens for mechanical property testing can only be processed into plate shapes. When installing the plate-shaped specimens, it should be ensured that the specimen axis coincides with the loading chain axis. As shown in Figure 1 (a), only in this way can it be ensured that the specimen is only under the action of axial load. However, at present, the positioning and clamping of plate-shaped specimens are mainly completed by the tester holding them by hand. Due to the technical ability of the tester and the jitter of holding by hand, the following problems are likely to occur when installing the specimens by hand: (1) The specimen is inclined, that is, the specimen axis (such as L2 shown in Figure 1 ) forms a certain angle with the axis of the loading chain (such as L1 shown in Figure 1 ), as shown in Figure 1 (b); (2) The specimen is not centered, that is, although the specimen axis is parallel to the loading chain axis, they do not coincide, as shown in Figure 1 (c). The inclined installation of the specimen ( Figure 1 (b)) will change the stress state of the specimen, causing the specimen to be under the combined action of axial and transverse loads, resulting in inaccurate test results. In addition, in the test containing axial compression, the inclination of the specimen may cause the specimen to buckle, leading to the failure of the test. Figure 1 (c) The non-centered installation of the specimen shown may have less impact on the test results, but it reduces the perfection and rigor of the test process.

[0036] Another disadvantage of installing by hand is that the position of the specimen cannot be accurately adjusted. When the phenomena of Figure 1 (b) and (c) occur during the specimen installation and need to be corrected, the specimen can only be removed from the clamping chuck and reinstalled and positioned by hand again. However, the positioning by hand cannot accurately control the position and angle of the specimen, and it may be necessary to repeat many times to meet the test requirements. For materials with low hardness, repeated positioning and clamping will cause damage to the clamping part of the specimen, resulting in the fracture of the specimen at the clamping part and causing the failure of the test. In addition, repeatedly clamping the specimen many times will also reduce the test efficiency. Therefore, the specimen should be avoided from being clamped many times.

[0037] In view of the disadvantages of installing by hand, the current main solution is to install positioning pieces on the upper and lower chucks of the testing machine. The clamping part of the specimen leaning against the same position of the upper and lower positioning pieces at the same time can ensure correct installation. However, when the clamping part of the specimen is short, it cannot touch the positioning piece, and the positioning piece loses its function. When the specimen is short, the space between the upper and lower chucks is small, and there is not enough space for hand-held installation, and the positioning piece also loses its function. In addition, the positioning piece cannot solve the problem of being unable to accurately adjust the position of the specimen mentioned above.

[0038] The present utility model provides a specimen auxiliary installation device, aiming to solve the problems that it is not easy to install a specimen of a plate by hand, it is easy to install the specimen out of place when installing the specimen by hand, and the phenomenon of damaging the specimen caused by installing the specimen multiple times occurs.

[0039] Please refer to Figure 2 , in an embodiment of the present utility model, the specimen auxiliary installation device 100 includes a workpiece to be clamped 1, a clamping mechanism 2 and an adjusting mechanism 3. The workpiece to be clamped 1 includes a clamped portion 11 and an installation portion 12 which are connected to each other. The clamped portion 11 extends along a first direction, and the clamped portion 11 can be arranged on the upper chuck 201 or the lower chuck 202; the clamping mechanism 2 is used for clamping the specimen 300; one end of the adjusting mechanism 3 is connected to the installation portion 12, and the other end of the adjusting mechanism 3 is connected to the clamping mechanism 2, so that the adjusting mechanism 3 can adjust the position of the specimen 300 clamped by the clamping mechanism 2 in space and adjust the included angle between the axial direction of the specimen 300 clamped by the clamping mechanism 2 and the extending direction of the axis of the loading chain of the specimen 300.

[0040] Among them, the clamped part 11 is clamped by the upper chuck 201 or the lower chuck 202 of the testing machine. Taking the upper chuck 201 as an example, the upper chuck 201 clamps the clamped part 11, and then the clamping mechanism 2 clamps one end of the specimen 300. Next, the adjusting mechanism 3 adjusts the position of the specimen 300 in space so that the axis of the specimen 300 coincides with the axis of the loading chain. Then, the lower chuck 202 clamps the other end of the specimen 300. Subsequently, the clamping of the specimen 300 by the clamping mechanism 2 is released, and then the clamping of the clamped part 11 by the upper chuck 201 is released, thereby removing the specimen auxiliary installation device 100. Finally, the upper chuck 201 clamps the end of the specimen 300 far from the lower chuck 202, thus realizing the clamping of the specimen 300 in the correct position; among them, for the shorter specimen 300 that is not easy to be installed by hand, the above solution sets the clamped part 11 that is easy to be clamped by the upper chuck 201. When the upper chuck 201 clamps the clamped part 11, it is equivalent to the upper chuck 201 clamping the first end of the specimen 300. Then, the lower chuck 202 clamps the other end of the specimen 300, removes the specimen auxiliary installation device 100, and then the upper chuck 201 clamps the end of the specimen 300 far from the lower chuck 202. This process does not require personnel to hold the specimen 300 by hand, thus solving the problem of difficult hand-held installation for the shorter specimen 300; the adjusting mechanism 3 adjusts the position and swing angle of the specimen 300 in space, solving the problems of non-alignment and inclination of the specimen 300 that are likely to occur during hand-held installation of the specimen 300. By adjusting the position and swing angle of the specimen 300 through the adjusting mechanism 3, the axis of the specimen 300 coincides with the axis of the loading chain, realizing the precise position adjustment of the specimen 300 and the vertical installation of the specimen 300; and during the entire installation process, there is no need to unload the specimen 300, thus avoiding the phenomenon of specimen 300 damage caused by multiple clamping of the specimen 300. It should be noted that the clamped part 11 is vertically arranged with the installation part 12. It should also be noted that the specimen 300 can be a plate-shaped specimen.

[0041] In one embodiment, the adjusting mechanism 3 includes a position adjusting component 31 and an angle adjusting component 32. The mounting portion 12 is connected to one end of the position adjusting component 31, the other end of the position adjusting component 31 is connected to the angle adjusting component 32, and the end of the angle adjusting component 32 away from the position adjusting component 31 is connected to the clamping mechanism 2. The position adjusting component 31 can adjust the position of the clamping mechanism 2 in space, and the angle adjusting component 32 can adjust the included angle between the axial direction of the specimen 300 clamped by the clamping mechanism 2 and the extending direction of the axis of the loading chain of the specimen 300. By providing the position adjusting component 31 and the angle adjusting component 32, independent adjustment of the specimen 300 can be achieved, that is, the position of the specimen 300 can be adjusted separately by the position adjusting component 31, and the angle of the specimen 300 can be adjusted separately by the angle adjusting component 32, and the two do not interfere with each other, so as to achieve the effect of independent adjustment. Furthermore, it is easier to move the specimen 300 to the correct position. The precise movement of the specimen 300 is achieved by relying on the position adjusting component 31, solving the problem of misalignment of the specimen 300. The angle of the specimen 300 is precisely adjusted by relying on the angle adjusting component 32 so that the specimen 300 can be in a vertical state, ensuring the vertical installation of the specimen 300 and avoiding the problem of tilting of the specimen 300 caused by manually installing the specimen 300.

[0042] According to an embodiment of the present invention, the adjusting mechanism 3 includes a position adjusting component 31 and an angle adjusting component 32. One end of the angle adjusting component 32 is connected to the mounting portion 12, the other end of the angle adjusting component 32 is connected to the position adjusting component 31, and the end of the position adjusting component 31 away from the angle adjusting component 32 is connected to the clamping mechanism 2. The position adjusting component 31 can adjust the position of the clamping mechanism 2 in space, and the angle adjusting component 32 can adjust the included angle between the axial direction of the specimen 300 clamped by the clamping mechanism 2 and the extending direction of the axis of the loading chain of the specimen 300; through this setting, independent adjustment of the position and angle of the specimen 300 can also be achieved.

[0043] In one embodiment, the position adjustment component 31 includes a first mobile platform 311 and a second mobile platform 312, the mounting portion 12 is connected to one end of the first mobile platform 311, the other end of the first mobile platform 311 is connected to the second mobile platform 312, and the end of the second mobile platform 312 away from the first mobile platform 311 is connected to the angle adjustment component 32, the first mobile platform 311 can drive the sample 300 to move along the second direction, and the second mobile platform 312 can drive the sample 300 to move along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. The first moving platform 311 can drive the sample 300 clamped by the clamping mechanism 2 to move along the second direction through the second moving platform 312, the angle adjustment component 32 and the clamping mechanism 2, so as to independently and accurately adjust the position of the sample 300 in the second direction; the second moving platform 312 can drive the sample 300 clamped by the clamping mechanism 2 to move along the third direction through the angle adjustment component 32 and the clamping mechanism 2, so as to independently and accurately adjust the position of the sample 300 in the third direction. The first moving platform 311 and the second moving platform 312 realize the precise translation function of the sample 300 along the second direction and the third direction, so that the sample 300 can be more easily centered. It should be noted that the first direction is Figure 1 The up and down directions shown, the second direction is Figure 1 The left and right directions shown, the third direction is Figure 1 Front-to-back orientation shown.

[0044] According to an embodiment of the utility model, the position adjustment component 31 includes a first movable platform 311, a second movable platform 312 and a third movable platform connected in sequence. The end of the first movable platform 311 away from the second movable platform 312 is connected to the mounting portion 12, and the end of the third movable platform away from the second movable platform 312 is connected to the angle adjustment component 32. The first movable platform 311 can drive the sample 300 to move along the second direction, the second movable platform 312 can drive the sample 300 to move along the third direction, and the third movable platform can drive the sample 300 to move along the first direction. The first direction, the second direction and the third direction are perpendicular to each other. Straight, thereby realizing the precise translation function of the sample 300 along the first direction, the second direction and the third direction, so that the position of the sample 300 can be adjusted in a wider range. Generally, only one of the upper chuck 201 and the lower chuck 202 of the testing machine will move. When the clamped part 11 is clamped by the chuck that does not move, the sample 300 can be driven to move by the third moving platform, so that the movable chuck can smoothly clamp the sample 300. The third moving platform is adjusted by manually turning the adjustment knob 221. Compared with relying on the testing machine to perform electronic control adjustment of the chuck, manual adjustment is easier to operate, eliminating the operator's process of going to the control panel.

[0045] According to another embodiment of the present utility model, the structures of the first moving platform 311, the second moving platform 312, and the third moving platform are similar. Taking the first moving platform 311 as an example, the first moving platform 311 includes a first fixed block, a first sliding block, and a first differential head. The first fixed block is slidably matched with the first sliding block, and the first differential head is rotatably installed on the first fixed block. The first sliding block can relatively move along the second direction relative to the first fixed block under the action of the first differential head to adjust the translation of the specimen 300 in the second direction. It should be noted that the first moving platform 311, the second moving platform 312, and the third moving platform can all adopt differential head translation stages, and the angle adjustment assembly 32 can be realized by using the existing technology.

[0046] In one embodiment, the installation part 12 is detachably connected to the first moving platform 311; wherein the installation part 12 is detachably connected to the first moving platform 311, so that the clamped part 1 adapted thereto can be replaced according to the chuck of the testing machine.

[0047] According to one embodiment of the present utility model, the first moving platform 311 and the second moving platform 312 are detachably connected; the detachable connection between the first moving platform 311 and the second moving platform 312 facilitates the maintenance of the first moving platform 311 and the second moving platform 312.

[0048] According to another embodiment of the present utility model, the second moving platform 312 and the angle adjustment assembly 32 are detachably connected; it is convenient to detach the angle adjustment assembly 32 for maintenance.

[0049] According to yet another embodiment of the present utility model, the angle adjustment assembly 32 and the clamping mechanism 2 are detachably connected. It is convenient to detach the clamping mechanism 2 for maintenance.

[0050] According to one embodiment of the present utility model, the installation part 12 and the first moving platform 311 are detachably connected by four positioning screws, and the first moving platform 311 and the second moving platform are detachably connected by four positioning screws; the second moving platform 312 and the angle adjustment assembly 32 are detachably connected by four positioning screws; the angle adjustment assembly 32 and the clamping mechanism 2 are detachably connected by four positioning screws.

[0051] In one embodiment, clamping surfaces 212 are provided on both sides of the clamped part 11, and the angle adjustment assembly 32 can drive the specimen 300 to swing in a plane parallel to the clamping surface 212. Among them, the angle adjustment assembly 32 can drive the specimen 300 to move in a plane perpendicular to the second direction, solving the problem that the specimen 300 is prone to tilt when the specimen 300 is installed by hand.

[0052] Please refer to Figure 3 and Figure 4As shown, in one embodiment, the clamping mechanism 2 includes a fixed seat 21, an adjusting member 22, and a clamping member 23. The fixed seat 21 is connected to the adjusting mechanism 3. The fixed seat 21 is provided with a receiving groove 211 for receiving the specimen 300. One side wall of the receiving groove 211 is provided with a clamping surface 212, and the other side wall of the receiving groove 211 is provided with the adjusting member 22. The adjusting member 22 is in driving connection with the clamping member 23. The clamping member 23 is located in the receiving groove 211, and a clamping space is formed between the clamping member 23 and the clamping surface 212. The adjusting member 22 can adjust the size of the clamping space through the clamping member 23 so that the clamping member 23 and the clamping surface 212 clamp the specimen 300. Among them, the adjusting member 22 can drive the clamping member 23 to move, changing the distance between the clamping member 23 and the clamping surface 212, so that the clamping member 23 and the clamping surface 212 can successfully clamp the specimen 300 located in the clamping space.

[0053] In one embodiment, the fixed seat 21 is provided with a threaded hole (not shown in the figure) communicating with the receiving groove 211. The adjusting member 22 is in screw fit with the threaded hole. One end of the adjusting member 22 is rotatably installed on the clamping member 23, and the other end of the adjusting member 22 is provided with a knob 221. By rotating the adjusting member 22, the clamping member 23 can be driven to move in the second direction so that the clamping member 23 approaches or moves away from the clamping surface 212.

[0054] In one embodiment, the clamping surface 212 is provided with a plurality of scale lines 213, and the plurality of scale lines 213 are arranged at intervals in sequence in the third direction, and the first direction is perpendicular to the third direction. By providing the scale lines 213, it is easy to judge the moving distance of the specimen 300 through the scale lines 213 and to judge whether the specimen 300 is centered through the central scale line 213. It should be noted that the remaining scale lines 213 on both sides of the central scale line 213 are symmetrically arranged.

[0055] The present utility model also proposes a testing machine. Please refer to Figure 1 and Figure 2 , the testing machine includes a driving mechanism (not shown in the figure), an upper chuck 201, a lower chuck 202, and the above-mentioned specimen auxiliary installation device 100. The upper chuck 201 or the lower chuck 202 can clamp the clamped portion 11. The upper chuck 201 and the lower chuck 202 are both in driving connection with the driving mechanism, and the driving mechanism can drive the upper chuck 201 and the lower chuck 202 to approach or move away from each other. Since this testing machine adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one.

[0056] In one embodiment, the testing machine further includes a calibration component for detecting whether the axis of the specimen 300 coincides with the axis of the loading chain of the specimen 300. Generally, the calibration component can be a dial indicator. Relying on the dial indicator for auxiliary calibration of the specimen 300 helps to adjust the specimen 300 within the range required by the test.

[0057] According to an embodiment of the present invention, a swing angle scale is provided on the angle adjustment assembly 32 so that the angle adjustment assembly 32 can accurately adjust the angle of the specimen 300.

[0058] The installation process of the specimen 300 is as follows: First, the top of the specimen 300 is pushed against the bottom wall of the receiving groove 211. Then, the position of the specimen 300 is accurately adjusted relying on the scale line 213, and the center scale line 213 is used to determine whether the specimen 300 is centered. After the specimen 300 is centered, the adjusting member 22 is rotated to drive the clamping member 23 closer to the clamping surface 212 to fix the specimen 300 in the center. Then, the test machine can move the chuck to clamp the clamped portion 11. Here, taking the upper chuck 201 as an example, the clamped portion 11 is clamped by the upper chuck 201, and the installation of the clamped portion 11 should keep its axis vertical. Since the clamped portion 11 is larger in size than the specimen 300, it is easier to be clamped by the chuck of the testing machine. Through the above steps, it can be basically ensured that the axis of the specimen 300 is vertical or has only a very small inclination angle. The specimen 300 is driven to move along the second direction by the first moving platform 311 and along the third direction by the second moving platform 312 so that the clamped portion of the specimen 300 is located at the middle position of the lower chuck 202. Further, the angle of the specimen 300 is adjusted by the angle adjustment assembly 32 to make the axis of the specimen 300 reach a satisfactory perpendicularity. Then, the lower chuck 202 clamps one end of the specimen 300 away from the upper chuck 201. Then, the clamping member 23 is moved away from the clamping surface 212 by rotating the adjusting member 22 again to release the clamping of the specimen 300, and then the upper chuck 201 is controlled to release the clamping of the clamped portion 11, so as to remove the specimen auxiliary installation device 100 as a whole. Finally, the upper chuck 201 clamps one end of the specimen 300 away from the lower chuck 202 to complete the installation and clamping of the specimen 300.

[0059] The above is only an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A specimen auxiliary installation device for assisting in the correct installation of a specimen, characterized in that, Comprising: A workpiece to be clamped, which includes a clamped portion and a mounting portion connected to each other. The clamped portion can be disposed on the upper chuck or the lower chuck; A clamping mechanism for clamping the specimen; An adjusting mechanism, one end of which is connected to the mounting portion and the other end of which is connected to the clamping mechanism, so that the adjusting mechanism can adjust the position of the specimen clamped by the clamping mechanism in space and adjust the angle between the axial direction of the specimen clamped by the clamping mechanism and the extending direction of the axis of the loading chain of the specimen.

2. The sample auxiliary mounting device according to claim 1, characterized in that, The adjusting mechanism includes a position adjusting component and an angle adjusting component. The mounting portion is connected to one end of the position adjusting component, the other end of the position adjusting component is connected to one end of the angle adjusting component, and the other end of the angle adjusting component is connected to the clamping mechanism. The position adjusting component can adjust the position of the clamping mechanism in space, and the angle adjusting component can adjust the angle between the axial direction of the specimen clamped by the clamping mechanism and the extending direction of the axis of the loading chain of the specimen.

3. The specimen auxiliary mounting device according to claim 2, characterized in that, The position adjusting component includes a first moving platform and a second moving platform. The mounting portion is connected to one end of the first moving platform, the other end of the first moving platform is connected to one end of the second moving platform, and the other end of the second moving platform is connected to the angle adjusting component. The first moving platform can drive the specimen to move along a second direction, and the second moving platform can drive the specimen to move along a third direction. The first direction, the second direction and the third direction are perpendicular to each other.

4. The sample auxiliary installation device according to claim 3, wherein The mounting portion is detachably connected to the first moving platform; And / or, the first moving platform and the second moving platform are detachably connected; And / or, the second moving platform and the angle adjusting component are detachably connected; And / or, the angle adjusting component and the clamping mechanism are detachably connected.

5. The sample auxiliary installation device according to claim 2, characterized in that, The clamped portion extends along a first direction, and clamping surfaces are provided on both sides of the clamped portion. The angle adjusting component can drive the specimen to swing in a plane parallel to the clamping surfaces.

6. The specimen auxiliary installation device according to any one of claims 1 to 5, characterized in that, The clamping mechanism includes a fixed seat, an adjusting member and a clamping member. The fixed seat is connected to the adjusting mechanism. The fixed seat is provided with a receiving groove for receiving the specimen. A clamping surface is provided on the groove wall on one side of the receiving groove, and an adjusting member is provided on the groove wall on the other side of the receiving groove. The adjusting member is in transmission connection with the clamping member. The clamping member is located in the receiving groove, and a clamping space is formed between the clamping member and the clamping surface. The adjusting member can adjust the size of the clamping space through the clamping member so that the clamping member and the clamping surface clamp the specimen.

7. The sample auxiliary installation device according to claim 6, wherein The fixed seat is provided with a threaded hole which communicates with the receiving groove. The adjusting member is in screw fit with the threaded hole. One end of the adjusting member is rotatably mounted on the clamping member, and a knob is provided at the other end of the adjusting member.

8. The sample auxiliary installation device according to claim 6, wherein, The clamping surface is provided with a plurality of scale lines, and the plurality of scale lines are arranged at intervals in sequence along the third direction. The first direction is perpendicular to the third direction, and the plurality of scale lines include a central scale line.

9. A testing machine, characterized in that, The testing machine includes a driving mechanism, an upper chuck, a lower chuck, and a specimen auxiliary mounting device according to any one of claims 1 to 8. The upper chuck or the lower chuck can clamp the clamped portion. Both the upper chuck and the lower chuck are in transmission connection with the driving mechanism, and the driving mechanism can drive the upper chuck and the lower chuck to approach or move away from each other.

10. The testing machine according to claim 9, characterized in that, The testing machine further includes a calibration member, and the calibration member is used to detect whether the axis of the specimen coincides with the axis of the loading chain of the specimen.

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