Dumbbell-shaped sample size detection equipment

By designing a dumbbell-shaped sample size detection device, and using mounting and measuring components to adjust and fix the sample spacing, the problem of cumbersome detection process in existing technologies is solved, and the goal of efficiently detecting samples of different specifications is achieved.

CN223564914UActive Publication Date: 2025-11-18SHENZHEN LANTAI TECH CO LTD
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Patent Information

Application Number
CN202423308701.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-11-18
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

In the existing technology, the testing of dumbbell-shaped samples requires changing to a phase-compatible fixture, which makes the testing process cumbersome and inefficient.

Method used

Design a dumbbell-shaped sample size detection device, including a worktable, a mounting component, and a measuring component. The spacing of the mounting components is adjusted by a first moving component, the sample is fixed by a clamping component, and the length, width, and thickness of the sample are measured by the measuring component, which simplifies the operation steps and improves the detection efficiency.

Benefits of technology

It enables the testing of samples of different specifications without changing the fixture, simplifies the operation steps, improves the testing efficiency, and is suitable for testing dumbbell-shaped samples of different materials and specifications.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model is suitable for the technical field of test detection, and provides dumbbell-shaped sample size detection equipment, which comprises a workbench used for installing a mounting assembly and a measuring assembly; the mounting assembly is used for mounting a sample, and the mounting assembly comprises a first moving assembly and a group of mounting pieces; and the measuring assembly comprises a first measuring group and a second measuring group. According to the utility model, the workbench for mounting the mounting assembly and the measuring assembly is arranged, the mounting assembly is provided with a group of mounting pieces for mounting the two ends of the sample, and then the length, width, thickness and other external dimensions of the sample are detected through the first measuring group and the second measuring group of the measuring assembly, so that corresponding clamps do not need to be replaced due to different specifications of the sample; operation steps are simplified to improve detection efficiency.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to sample detection technical field especially, it relates to a dumbbell type sample size detection equipment. BACKGROUND

[0002] Dumbbell type sample plays an important role in the field of material science, and the functions of dumbbell type sample can include evaluating material performance, preventing stress concentration, improving test accuracy, meeting standard requirements, adapting to special material testing, and improving sample preparation efficiency. Dumbbell type sample is widely used in various fields and plays a key role, and is an indispensable part of material performance testing.

[0003] The shape and size of dumbbell type sample meet specific testing standards, which helps to improve the accuracy and reliability of tensile testing. The main purpose of designing dumbbell type sample is to prevent stress concentration at the clamping position and ensure that material failure occurs in the middle region of the sample, thereby obtaining accurate stress data.

[0004] In the prior art, after the dumbbell type sample is prepared, its appearance size needs to be detected. The parameters that need to be detected include the length, width, thickness of the sample and the detection of other special properties. When the sample is detected, it needs to be placed in a suitable clamp for detection. When different specifications of samples are detected, the corresponding clamp needs to be replaced. The whole detection process is complicated and the detection efficiency is low. UTILITY MODEL CONTENT

[0005] The utility model embodiment aims to provide a dumbbell type sample size detection equipment, which aims to solve the problem that when the sample is detected, it needs to be placed in a suitable clamp for detection, and when different specifications of samples are detected, the corresponding clamp needs to be replaced. The whole detection process is complicated and the detection efficiency is low.

[0006] The utility model embodiment is implemented as follows: a dumbbell type sample size detection equipment, the dumbbell type sample size detection equipment includes:

[0007] Workbench, the workbench is used to install the installation of assembly and measuring assembly;

[0008] Installation assembly, the installation assembly is used for installing sample, the installation assembly includes first mobile assembly and a group of installation parts, the first mobile assembly is installed on the workbench, the first mobile assembly is provided with transmission part and installation part connection, a group of installation parts is used for installing sample, and the first mobile assembly drives the installation part to move so as to adjust the spacing between two installation parts to realize the installation of different size samples;

[0009] A measuring assembly, which comprises a first measuring group for measuring the thickness of the sample and a second measuring group for measuring the length and / or width of the sample.

[0010] Preferably, the first moving assembly comprises a power member and a transmission member, the power member is installed on the workbench, the power member is in transmission connection with the transmission member, and the transmission member is used to drive a group of mounting members to move away from or towards each other to adjust the distance between the two mounting members.

[0011] Preferably, the mounting member is provided with a clamping assembly for fixing the sample, the mounting member is provided with a connecting portion and a mounting portion, the connecting portion is rod-shaped and provided with a connecting ring at the end thereof, the connecting ring is sleeved on the first moving assembly, the mounting portion is a square block and provided with an anti-skid groove, a first mounting hole and a second mounting hole on the top surface thereof, the side surface of the mounting portion is provided with a third mounting hole in communication with the first mounting hole, and the first mounting hole, the second mounting hole and the third mounting hole are used to install the clamping assembly.

[0012] Preferably, the clamping assembly comprises a clamping plate, a first adjusting knob and a connecting block, the clamping plate is installed on the second mounting hole through a connecting rod at the bottom, the clamping plate is provided with a positioning groove at the bottom surface thereof for positioning the sample, the connecting rod is installed on the hole wall of the second mounting hole through a first spring, the first adjusting knob is installed on the third mounting hole, the first adjusting knob is connected with the connecting block through a rotating shaft, and the connecting block is movably installed on the first mounting hole, the clamping of the sample is realized by rotating the first adjusting knob to adjust the height of the clamping plate.

[0013] Preferably, the first measuring group comprises an installation plate, a positioning plate and a group of first detecting members, the installation plate is installed on the workbench and is perpendicular to the sample on the mounting member, the positioning plate is installed on the back surface of the installation plate through a second adjusting knob, the installation plate is provided with two fourth mounting holes, the distance between the two fourth mounting holes is the same as the length of the positioning plate, and the group of first detecting members are installed on the two fourth mounting holes through a connecting frame so that the detection ends of the group of first detecting members are in opposite positions and are aligned with each other, the first detecting members are connected with the connecting frame through a second spring, the connecting frame is installed on the hole wall of the fourth mounting hole through a third spring, and the thickness of the sample is detected by rotating the second adjusting knob to adjust the distance between the two first detecting members.

[0014] Preferably, the second measuring group comprises a second moving assembly and a second detecting member, the second moving assembly is installed on the workbench, and the second moving assembly is used to drive the second detecting member to move so as to detect the length and / or width of the sample.

[0015] Preferably, the workbench bottom is provided with an internal cavity for mounting the first moving assembly, the workbench tabletop is provided with a group of guide holes for guiding the movement of the mounting members, and the workbench tabletop is provided with a mounting frame for mounting the second measuring assembly so that the second measuring assembly is located above the sample.

[0016] Preferably, the dumbbell-shaped sample size detection equipment further comprises a control module, the control module comprises a display screen and a plurality of keys, the display screen is used for displaying data information detected by the measuring assembly, and the keys are used for controlling the actions of the mounting assembly and the measuring assembly.

[0017] The dumbbell-shaped sample size detection equipment provided by the embodiment of the utility model, the utility model sets up the workbench for installing mounting assembly and measuring assembly, mounting assembly sets up a group of mounting members for installing two ends of sample, and the first moving assembly is used for driving the mounting members to move to adjust the distance between the two mounting members, so that the sample detection for different sizes and different specifications is realized, after the sample is fixed completely, the length, width, thickness and other appearance sizes of the sample are detected by the first measuring assembly and the second measuring assembly of the measuring assembly, the stress concentration position of the sample can be detected by moving the sample fixed on the mounting member by the first moving assembly, different specifications of samples can be detected, and the corresponding clamps do not need to be replaced due to different sample specifications, the operation steps are simplified, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional structure diagram of the dumbbell-shaped sample size detection equipment provided by the embodiment of the utility model is provided.

[0019] Figure 2 A structure schematic view of the mounting assembly and the first measuring assembly in the dumbbell-shaped sample size detection equipment provided by the embodiment of the utility model is provided.

[0020] Figure 3 A structure schematic view of the mounting member and the clamping assembly in the dumbbell-shaped sample size detection equipment provided by the embodiment of the utility model is provided.

[0021] Figure 4 A structure schematic view of the first measuring assembly in the dumbbell-shaped sample size detection equipment provided by the embodiment of the utility model is provided.

[0022] In the attached figures: 1. Workbench; 11. Guide hole; 2. Mounting assembly; 21. Mounting component; 211. Mounting part; 212. Connecting part; 2121. Connecting ring; 22. First moving assembly; 221. Transmission component; 222. Power component; 23. Clamping assembly; 231. Clamping plate; 2311. Connecting rod; 232. Connecting block; 233. First adjusting knob; 3. Measuring assembly; 31. First measuring group; 311. Detection piece; 312. Connecting frame; 313. Mounting plate; 314. Positioning plate; 315. Second adjusting knob; 32. Second measuring group; 321. Second moving assembly; 4. Control module; 41. Display screen; 42. Button; 5. Sample. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0025] like Figures 1-2 The diagram shown is a structural diagram of a dumbbell-shaped sample 5 size detection device provided in an embodiment of the present invention, including: a workbench 1, the workbench 1 being used for mounting components 2 and measuring components 3;

[0026] Mounting component 2 is used to mount sample 5. Mounting component 2 includes a first moving component 22 and a set of mounting parts 21. The first moving component 22 is mounted on the workbench 1. The first moving component 22 is provided with a transmission component 221 connected to the mounting parts 21. The set of mounting parts 21 is used to mount sample 5. The first moving component 22 drives the mounting parts 21 to move so as to adjust the distance between the two mounting parts 21 to mount sample 5 of different sizes.

[0027] The measuring component 3 includes a first measuring group 31 and a second measuring group 32. The first measuring group 31 is used to measure the thickness of the sample 5, and the second measuring group 32 is used to measure the length and / or width of the sample 5.

[0028] In the embodiment of the utility model, preferably, a dumbbell type sample 5 size detection equipment is mainly suitable for detecting dumbbell type samples 5 of different specifications and different materials, the whole dumbbell type sample 5 size detection equipment mainly comprises a workbench 1, a mounting assembly 2 and a measuring assembly 3, the mounting assembly 2 and the measuring assembly 3 are installed on the workbench 1, a group of mounting pieces 21 of the mounting assembly 2 are installed at two ends of the sample 5, the interval between the two mounting pieces 21 can be adjusted by driving the two mounting pieces 21 to move in opposite directions by the first moving assembly 22, so that the dumbbell type sample 5 size detection equipment can be adjusted according to the size of the sample 5 to realize the installation and detection of samples 5 of different specifications and different sizes, after the sample 5 is installed, the first measuring group 31 and the second measuring group 32 of the measuring assembly 3 are used to detect the sample 5 respectively to obtain the size of the current sample 5; when detecting samples 5 of different specifications, the interval between the two mounting pieces 21 can be adjusted by the first moving assembly 22, and the sample 5 is fixed completely by the clamping assembly 23, without replacing the corresponding clamp, the operation steps are simplified, and the detection efficiency is improved; when detecting the sample 5 of elastic material, the ductility of the sample 5 can also be detected, the sample 5 is driven to move backward by the first moving assembly 22, and the sample 5 is stretched, so that whether the stress concentration position of the sample 5 meets the use requirement can be detected.

[0029] In one example of the utility model, the utility model sets up the workbench 1 for installing the mounting assembly 2 and the measuring assembly 3, the mounting assembly 2 sets up a group of mounting pieces 21 for installing two ends of the sample 5, and the mounting piece 21 is driven to move by the first moving assembly 22 to adjust the interval between the two mounting pieces 21 to realize the detection of the sample 5 of different sizes and different specifications, after the sample 5 is fixed completely, the length, the width, the thickness and other appearance sizes of the sample 5 are detected by the first measuring group 31 and the second measuring group 32 of the measuring assembly 3, the sample 5 fixed on the mounting piece 21 can also be moved by the first moving assembly 22, so that the stress concentration position of the test can be detected, and the sample 5 of different specifications can be detected, without replacing the corresponding clamp because of the different specifications of the sample 5, the operation steps are simplified to improve the detection efficiency.

[0030] As shown in Figure 2 As a preferred embodiment of the utility model, the first moving assembly 22 comprises a power piece 222 and a transmission piece 221, the power piece 222 is installed on the workbench 1, the power piece 222 is in transmission connection with the transmission piece 221, and the transmission piece 221 is used to drive a group of mounting pieces 21 to move backward or toward each other to adjust the interval between the two mounting pieces 21.

[0031] In the embodiment of the utility model, preferably, the first moving assembly 22 is mainly composed of a power element 222 and a transmission element 221, the power element 222 is used to provide power for the transmission element 221, the mounting element 21 connected with the transmission element 221 can be driven to move by the transmission element 221, when the transmission element 221 drives the mounting element 21 to move towards each other to shorten the distance therebetween, it is convenient to install the sample 5 with smaller specification, when the transmission element 221 drives the mounting element 21 to move away from each other to lengthen the distance therebetween, it is convenient to install the sample 5 with larger specification or to carry out the ductility detection of the sample 5.

[0032] As Figures 1-3 The mounting element 21 is provided with a clamping assembly 23 for fixing the sample 5, the mounting element 21 is provided with a connecting portion 212 and a mounting portion 211, the connecting portion 212 is rod-shaped and the end thereof is provided with a connecting ring 2121, the connecting ring 2121 is sleeved on the first moving assembly 22, the mounting portion 211 is square block and the top surface thereof is provided with an anti-skid groove, a first mounting hole and a second mounting hole, the side surface of the mounting portion 211 is provided with a third mounting hole in communication with the first mounting hole, and the first mounting hole, the second mounting hole and the third mounting hole are used to install the clamping assembly 23.

[0033] In the embodiment of the utility model, preferably, the mounting element 21 is mainly composed of a rod-shaped connecting portion 212 and a square block-shaped mounting portion 211, the end of the connecting portion 212 is provided with a connecting ring 2121 used to be connected with the transmission element 221, the connecting ring 2121 is inserted on the transmission element 221, the transmission element 221 can be a double-end threaded screw rod with a certain length, the threads at both ends are connected with two mounting elements 21 respectively, the transmission element 221 can drive the mounting element 21 to move along the length direction of the transmission element 221 by rotating, the anti-skid groove is arranged on the top surface of the square block-shaped mounting portion 211 to increase the friction between the sample 5 and the mounting element 21, the first mounting hole and the second mounting hole with moving depth are arranged on the top surface of the mounting portion 211, and the third mounting hole in communication with the first mounting hole is arranged on the adjacent side surface, and the first mounting hole, the second mounting hole and the third mounting hole are used to install the clamping assembly 23.

[0034] As Figures 2-3As shown, as a preferred embodiment of the utility model, the clamping assembly 23 includes clamping plate 231, first adjusting knob 233 and connecting block 232, the clamping plate 231 is installed on the second mounting hole through the connecting rod 2311 of bottom, the clamping plate 231 bottom is provided with the positioning groove for positioning sample 5, the connecting rod 2311 is installed on the second mounting hole hole wall through the first spring, the first adjusting knob 233 is installed in the third mounting hole, the first adjusting knob 233 is connected with connecting block 232 through the pivot, the connecting block 232 is movably installed on the first mounting hole, and the height of clamping plate 231 is adjusted by rotating first adjusting knob 233 to realize the clamping of sample 5.

[0035] In the embodiment of the utility model, preferably, the clamping assembly 23 is mainly composed of clamping plate 231, first adjusting knob 233 and connecting block 232, clamping plate 231 is installed on the second mounting hole through connecting rod 2311, and first spring is arranged on connecting rod 2311 and connected with the second mounting hole hole wall, so that connecting rod 2311 drives clamping plate 231 to move in the direction of the elastic force of first spring to clamp or loosen sample 5 on mounting piece 21, and connecting block 232 is moved by rotating first adjusting knob 233, when connecting block 232 moves and is higher than the top surface of mounting piece 21, connecting block 232 abuts with clamping plate 231 and lifts clamping plate 231 to loosen the clamping of sample 5 so as to take down the sample 5 after detection and place the next sample 5 to be detected, when connecting block 232 moves and is lower than the top surface of mounting piece 21 by rotating first adjusting knob 233 again, clamping block resets under the action of the elastic force of first spring to make clamping plate 231 move down and contact the top surface of sample 5 to clamp, at this time, sample 5 is fixed completely and can be measured.

[0036] As shown, Figure 4 As a preferred embodiment of the utility model, the first measurement group 31 includes mounting plate 313, positioning plate 314 and a group of first detection pieces 311, the mounting plate 313 is installed on the workbench 1, the mounting plate 313 is perpendicular to sample 5 on mounting piece 21, the positioning plate 314 is installed on the back of mounting plate 313 through second adjusting knob 315, the mounting plate 313 is provided with two fourth mounting holes, the interval of two fourth mounting holes is same with the length of positioning plate 314, a group of first detection pieces 311 are installed on two fourth mounting holes through connecting frame 312 to make the detection end of a group of first detection pieces 311 be in opposite position and mutually align, the first detection piece 311 is connected with connecting frame 312 through second spring, the connecting frame 312 is installed on the hole wall of fourth mounting hole through third spring, the interval between two first detection pieces 311 is adjusted by rotating second adjusting knob 315 to realize the detection of the thickness of sample 5.

[0037] In the embodiment of the utility model, preferably, the first measurement group 31 is mainly composed of mounting plate 313, positioning plate 314 and a group of first detection piece 311, mounting plate 313 is installed on the workbench 1, and it is perpendicular to the workbench 1, so that two detection pieces 311 are installed on the fourth mounting hole of mounting plate 313 through connecting frame 312, so that two first detection pieces 311 are installed in opposite positions and are aligned with each other, which can abut on the front and back of test sample 5 respectively during detection to detect the thickness of test sample 5, the distance between two first detection pieces 311 can be adjusted through positioning plate 314 and second adjusting knob 315, positioning plate 314 can be an oval plate, and the position of the abutment between positioning plate 314 and two connecting frames 312 can be adjusted through the rotation of second adjusting knob 315 to adjust the distance between two first detection pieces 311, and the second spring installed between first detection piece 311 and connecting frame 312 can play a shock-absorbing role when the end of first detection piece 311 abuts on test sample 5, preventing the damage of first detection piece 311, and two first detection pieces 311 can select a pair of sensors to facilitate the detection of the thickness of test sample 5.

[0038] As shown in the figure, as a preferred embodiment of the utility model, the second measurement group 32 includes second moving assembly 321 and second detection piece 311, the second moving assembly 321 is installed on the workbench 1, and the second moving assembly 321 is used to drive the second detection piece 311 to move so that the second detection piece 311 detects the length and / or width of test sample 5. Figure 1

[0039] In the embodiment of the utility model, preferably, the second measurement group 32 drives the second detection piece 311 to move along the length direction or width direction of test sample 5 to detect the length or width of test sample 5, the second moving assembly 321 can select a motor and a transmission screw, and the transmission screw is used to drive the linear movement of second detection piece 311, the second detection piece 311 can be a visual detection, and when the second detection piece 311 moves directly above test sample 5, the length and width of test sample 5 can be detected through the camera image, or a scanning type sensor can be selected, and when the second detection piece 311 moves along the transmission screw, the length or width parameters of test sample 5 are obtained through scanning.

[0040] As shown in the figure, as a preferred embodiment of the utility model, the bottom of the workbench 1 is provided with an internal cavity for installing the first moving assembly 22, the workbench 1 is provided with a group of guide holes 11 for guiding the movement of mounting part 21, the workbench 1 is provided with a mounting frame, and the mounting frame is used to install the second measurement group 32 so that the second measurement group 32 is located above test sample 5.

[0041] ​In the embodiment of the utility model, preferably, the bottom of the workbench 1 is provided with a cavity similar to the cabinet body, and is provided with a cabinet door, the inner wall top surface of the cabinet body is used for installing the power element 222 and the transmission element 221 of the moving assembly, a group of guide holes 11 are arranged on the surface of the workbench 1, and each group of guide holes 11 can be provided with a plurality of parallel arranged guide holes 11 with a certain length, each group of guide holes 11 is used for guiding the movement of an installation element 21, so that the installation element 21 moves more stably, an installation rack with a certain height is arranged on the surface of the workbench 1, the second moving assembly 321 of the second measurement group 32 can be installed by using the installation rack, so that the second detection element 311 can detect the sample 5 located directly below, and the length or width of the sample 5 is detected.

[0042] As shown in Figure 1 As a preferred embodiment of the utility model, the dumbbell-shaped sample 5 size detection equipment further comprises a control module 4, the control module 4 comprises a display screen 41 and a plurality of buttons 42, the display screen 41 is used to display the data information detected by the measurement assembly 3, and the button 42 is used to control the action of the installation assembly 2 and the measurement assembly 3.

[0043] In the embodiment of the utility model, preferably, the dumbbell-shaped sample 5 size detection equipment can also be provided with a control module 4 installed on the installation rack of the workbench 1, the size parameters of the sample 5 after detection are displayed or recorded by the display screen 41, and the action of the installation assembly 2 and the measurement assembly 3 is controlled by the plurality of buttons 42.

[0044] The above only is the preferred embodiment of the utility model, and does not use to limit the utility model, and any modification, equivalent replacement and improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A dumbbell-shaped test specimen size detection apparatus characterized by comprising: The dumbbell-shaped sample size detection device comprises: a workbench for mounting the mounting assembly and the measuring assembly; a mounting assembly for mounting the sample, which comprises a first moving assembly mounted on the workbench and a set of mounting members, the first moving assembly is provided with a transmission member connected with the mounting members, and the set of mounting members are used for mounting the sample, and the first moving assembly drives the mounting members to move so as to adjust the distance between the two mounting members to mount samples of different sizes; a measuring assembly comprising a first measuring group and a second measuring group, the first measuring group is used for measuring the thickness of the sample, and the second measuring group is used for measuring the length and / or width of the sample.

2. The dumbbell gauge detection apparatus of claim 1, wherein The first moving assembly comprises a power member and a transmission member, the power member is mounted on the workbench, and the power member is in transmission connection with the transmission member, the transmission member is used for driving the set of mounting members to move away from or towards each other to adjust the distance between the two mounting members.

3. The dumbbell gauge detection apparatus of claim 1, wherein The mounting member is provided with a clamping assembly for fixing the sample, the mounting member is provided with a connecting portion and a mounting portion, the connecting portion is in the shape of a rod, and the end of the connecting portion is provided with a connecting ring which is sleeved on the first moving assembly, the mounting portion is in the shape of a square block, and the top surface of the mounting portion is provided with an anti-skid groove, a first mounting hole and a second mounting hole, the side surface of the mounting portion is provided with a third mounting hole in communication with the first mounting hole, and the first mounting hole, the second mounting hole and the third mounting hole are used for mounting the clamping assembly.

4. The dumbbell gauge apparatus of claim 3, wherein, The clamping assembly comprises a clamping plate, a first adjusting knob and a connecting block, the clamping plate is mounted on the second mounting hole through a connecting rod at the bottom, the bottom surface of the clamping plate is provided with a positioning groove for positioning the sample, the connecting rod is mounted on the hole wall of the second mounting hole through a first spring, the first adjusting knob is mounted in the third mounting hole, the first adjusting knob is connected with the connecting block through a rotating shaft, and the connecting block is movably mounted on the first mounting hole, and the height of the clamping plate is adjusted by rotating the first adjusting knob to clamp the sample.

5. The dumbbell gauge apparatus of claim 1, wherein, The first measuring group comprises an installation plate, a positioning plate and a set of first detection members, the installation plate is mounted on the workbench, the installation plate is perpendicular to the sample on the mounting member, the positioning plate is mounted on the back surface of the installation plate through a second adjusting knob, the installation plate is provided with two fourth mounting holes, the distance between the two fourth mounting holes is the same as the length of the positioning plate, and the set of first detection members are mounted on the two fourth mounting holes through a connecting frame so that the detection ends of the set of first detection members are in opposite positions and are aligned with each other, the first detection members are connected with the connecting frame through a second spring, the connecting frame is mounted on the hole wall of the fourth mounting hole through a third spring, and the distance between the two first detection members is adjusted by rotating the second adjusting knob to detect the thickness of the sample.

6. The dumbbell gauge apparatus of claim 1, wherein, The second measuring group comprises a second moving assembly and a second detection member, the second moving assembly is mounted on the workbench, and the second moving assembly is used for driving the second detection member to move so as to detect the length and / or width of the sample.

7. The dumbbell gauge apparatus of claim 1, wherein, The bottom of the workbench is provided with an internal cavity for mounting a first moving assembly, the workbench top is provided with a set of guide holes for guiding the movement of the mounting member, and the workbench top is provided with a mounting frame for mounting a second measuring assembly so that the second measuring assembly is located above the sample.

8. The dumbbell gauge apparatus of claim 1, wherein, The dumbbell-shaped sample size detection equipment further comprises a control module, the control module comprises a display screen and a plurality of keys, the display screen is used for displaying the data information detected by the measuring assembly, and the keys are used for controlling the actions of the mounting assembly and the measuring assembly.