Non-metallic material precrack processing device

Abstract

The utility model belongs to the technical field of detection devices, and discloses a non-metallic material precrack processing device which comprises a fixing piece, an adjusting piece, an impact knife and an impact assembly, the fixing piece is fixedly arranged on a working table, the adjusting piece is arranged on one side of the fixing piece and can enable a non-metallic material sample to be attached to the fixing piece, and the impact knife is arranged on the adjusting piece. The impact assembly is located on the side, away from the adjusting piece, of the fixing piece and is separated from the fixing piece, a wedge-shaped notch is formed in the face, facing the impact assembly, of the non-metal material sample, the fixing piece is provided with a strip-shaped seam opposite to the wedge-shaped notch, and the impact cutter is clamped in the strip-shaped seam and can move along the strip-shaped seam. The side, facing the impact assembly, of the impact cutter is partially exposed out of the strip-shaped seam, the side, deviating from the impact assembly, of the impact cutter is provided with a cutting edge, the cutting edge is arranged in the wedge-shaped notch, and the impact assembly can impact the impact cutter with fixed force. The formed prefabricated crack is high in consistency, the same test material can be detected twice or multiple times under the same condition, and the quality of the non-metallic material can be accurately judged.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a non-metallic material prefabricated crack processing device. Background Art

[0002] Crack propagation testing is a key testing item in the study of mechanical properties of materials. Crack propagation testing requires machining pre-cracks on the test material specimens, subjecting the test material specimens to different mechanical experiments, and detecting the diffusion rate and range of the pre-cracks on the test material specimens after the mechanical experiments to determine the performance of the test material. Therefore, the processing quality of the pre-cracks has a direct impact on the accuracy of the test material performance test data. Existing pre-cracks in non-metallic materials are formed by manually cutting the test material specimens with sharp cutting tips to form pre-cracks on the test material specimens. However, the consistency of the pre-cracks cannot be controlled due to the manual processing method. Therefore, the same test material cannot be tested twice or multiple times under exactly the same conditions, making it impossible to accurately determine the quality of the non-metallic material.

[0003] Therefore, there is an urgent need for a non-metallic material prefabricated crack processing device to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a non-metallic material pre-crack processing device, which can solve the problems of artificial processing of pre-cracks in non-metallic materials, the uncontrollable consistency of pre-cracks, the inability to perform secondary or multiple tests on the same test material under exactly the same conditions, and the inability to accurately judge the quality of non-metallic materials.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A non-metallic material pre-crack processing device is configured to process a non-metallic material sample to form a pre-crack, characterized in that the non-metallic material pre-crack processing device comprises:

[0007] A fixing member and an adjusting member, wherein the fixing member is fixedly placed on a work surface, the adjusting member is placed on one side of the fixing member, and the adjusting member is configured to make the non-metallic material sample fit the fixing member;

[0008] An impact assembly and an impact knife, wherein the impact assembly is located on the side of the fixing member away from the adjusting member and is spaced apart from the fixing member, a wedge-shaped cut is provided on the side of the non-metallic material sample facing the impact assembly, and the fixing member is provided with a strip slit opposite to the wedge-shaped cut, the impact knife is clamped in the strip slit and can move along the strip slit, a side of the impact knife facing the impact assembly is partially exposed in the strip slit, and a blade is provided on the side of the impact knife away from the impact assembly, the blade is placed in the wedge-shaped cut, and the impact assembly can impact the impact knife with a fixed force.

[0009] As an optimal technical solution for the non-metallic material pre-crack processing device, the non-metallic material pre-crack processing device also includes a base, which is movably connected to the fixing member, and the base includes a first protrusion, which is located between the fixing member and the adjusting member. The adjusting member can adjust the relative position of the base and the fixing member so that the non-metallic material sample is clamped between the first protrusion and the fixing member.

[0010] As an optimal technical solution for the prefabricated crack processing device of non-metallic materials, the fixing part includes a main frame part and a baffle part that are fixedly connected. The main frame part is located on the base, and the baffle part faces the side of the base and is fixedly connected to the work table. A protruding column is provided on the side of the base opposite to the baffle part, and a through hole is provided on the baffle part. The protruding column is movably inserted into the through hole.

[0011] As an optimal technical solution for the non-metallic material prefabricated crack processing device, a positioning hole is further provided on the baffle member, and the adjusting member is a bolt member. After the bolt member is passed through the positioning hole, it abuts against the base, and the bolt member is threadedly connected to the positioning hole.

[0012] As an optimal technical solution for the non-metallic material pre-crack processing device, an electromagnet is provided at the position of the base opposite to the positioning hole, the bolt member abuts against the electromagnet, and a ferromagnetic material is provided at one end of the bolt member facing the electromagnet.

[0013] As an optimal technical solution for the prefabricated crack processing device for non-metallic materials, the main frame has a protruding block facing the adjusting member, the base is provided with an avoidance hole, the protruding block is placed in the avoidance hole, the non-metallic material sample is fitted with the protruding block, the strip slit is placed on the protruding block, the base is provided with a guide slit opposite to the strip slit, and part of the blade of the impact knife is placed in the guide slit.

[0014] As an optimal technical solution for the prefabricated crack processing device of non-metallic materials, the base includes a second protrusion opposite to the first protrusion, the impact assembly includes a fixed sleeve, a spring member and an impact member, the fixed sleeve is connected to the second protrusion, the impact member includes a connecting rod and a resisting member, a partial area of ​​the spring member is sleeved on the outer periphery of the fixed sleeve and the connecting rod, the connecting rod passes through the fixed sleeve and is movably connected to the fixed sleeve, the resisting member is located at one end of the connecting rod facing the impact knife, and the spring member abuts between the resisting member and the second protrusion.

[0015] As a preferred technical solution of the device for processing prefabricated cracks in non-metallic materials, the fixing sleeve and the second protrusion are detachably connected.

[0016] As a preferred technical solution for the device for processing prefabricated cracks in non-metallic materials, a handle is provided at one end of the connecting rod facing away from the blocking member.

[0017] As a preferred technical solution for the device for processing prefabricated cracks in non-metallic materials, it is characterized in that the axis of the impact assembly and the central cross-section of the non-metallic material sample along the height direction are at the same height.

[0018] The beneficial effects of the utility model are:

[0019] The non-metallic material pre-crack processing device provided by the utility model forms pre-cracks by means of an impact component impacting an impact knife. Since the impact component can impact the impact knife with a fixed force, and the wedge-shaped incision is set on the non-metallic material sample through automated processing, the consistency of the wedge-shaped incision on each non-metallic material sample can be guaranteed, so that the number of impacts on each non-metallic material sample is the same, thereby ensuring the consistency of the pre-cracks on each non-metallic material sample. Therefore, the same non-metallic material samples can be inspected twice or multiple times under exactly the same conditions, thereby improving the accuracy of non-metallic material quality judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the assembly of the non-metallic material prefabricated crack processing device and the non-metallic material sample provided by the utility model;

[0021] Figure 2 This is a schematic structural diagram of a non-metallic material prefabricated crack processing device provided by the utility model;

[0022] Figure 3 yes Figure 2 A magnified schematic diagram of the middle part;

[0023] Figure 4 It is a structural schematic diagram of a non-metallic material sample provided by the utility model;

[0024] Figure 5 This is a structural diagram of a fixing part of a non-metallic material prefabricated crack processing device provided by the utility model;

[0025] Figure 6 This is a structural diagram of the base of the non-metallic material prefabricated crack processing device provided by the utility model;

[0026] Figure 7 It is a structural schematic diagram of the impact part of the non-metallic material prefabricated crack processing device provided by the utility model.

[0027] In the picture:

[0028] 100. Non-metallic material specimen; 101. Wedge-shaped incision;

[0029] 1. Fixing member; 11. Main frame member; 111. Protruding block; 1111. Strip seam; 12. Baffle member;

[0030] 2. Adjustment part; 3. Impact knife;

[0031] 4. Impact assembly; 41. Fixing sleeve; 42. Spring member; 43. Impact member; 431. Connecting rod; 432. Stop member; 44. Handle;

[0032] 5. Base; 51. First protrusion; 52. Protruding column; 53. Guide slit; 54. Avoidance hole; 55. Second protrusion. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0034] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0037] like Figures 1 to 5As shown, the embodiment provides a non-metal material prefabricated crack processing device configured to process a non-metal material sample 100 to form a prefabricated crack, wherein the non-metal material prefabricated crack processing device comprises a fixing member 1, an adjusting member 2, an impact knife 3 and a striking assembly 4, the fixing member 1 is fixedly arranged on a workbench surface, the adjusting member 2 is arranged on one side of the fixing member 1 and can make the non-metal material sample 100 adhere to the fixing member 1, the striking assembly 4 is arranged on the side of the fixing member 1 away from the adjusting member 2 and is arranged separately from the fixing member 1, one side of the non-metal material sample 100 facing the striking assembly 4 is provided with a wedge-shaped notch 101, the fixing member 1 is provided with a strip-shaped slot 1111 opposite to the wedge-shaped notch 101, the impact knife 3 is clamped in the strip-shaped slot 1111 and can move along the strip-shaped slot 1111, wherein one side of the impact knife 3 facing the striking assembly 4 is exposed to the strip-shaped slot 1111, one side of the impact knife 3 away from the striking assembly 4 is provided with a knife edge, and the knife edge is arranged in the wedge-shaped notch 101, the striking assembly 4 can strike the impact knife 3 with a fixed force, so that the knife edge of the impact knife 3 can gradually enter the inside of the wedge-shaped notch 101, so as to form a prefabricated crack in the non-metal material sample 100. Since the striking assembly 4 can strike the impact knife 3 with a fixed force, and the wedge-shaped notch 101 is arranged on the non-metal material sample 100 by automatic processing, the consistency of the wedge-shaped notch 101 on each non-metal material sample 100 can be ensured, so that the striking times of each non-metal material sample 100 are the same, thereby ensuring the consistency of the prefabricated crack on each non-metal material sample 100, so that the same non-metal material sample 100 can be subjected to secondary or multiple tests under exactly the same conditions, thereby improving the accuracy of non-metal material quality judgment.

[0038] As Figure 1 , Figure 2 and Figure 6As shown in , in this embodiment, the non-metallic material pre-crack processing device also includes a base 5, which is movably connected to the fixing member 1, wherein the base 5 includes a first protrusion 51, and the first protrusion 51 is located between the fixing member 1 and the adjusting member 2. The adjusting member 2 can adjust the relative position of the base 5 and the fixing member 1, so that the non-metallic material sample 100 is clamped between the first protrusion 51 and the fixing member 1, so that the fit between the non-metallic material sample 100 and the fixing member 1 can be made more stable. At the same time, since the relative position of the base 5 and the fixing member 1 can be adjusted, the non-metallic material pre-crack processing device can clamp and fix non-metallic material samples 100 of different sizes, and process pre-cracks on non-metallic material samples 100 of different sizes, thereby improving the versatility of the non-metallic material pre-crack processing device. Specifically, the fixing member 1 includes a main frame member 11 and a baffle member 12. The main frame member 11 is located on the base 5, and the baffle member 12 faces the side of the base 5. The baffle member 12 is fixedly connected to the work surface. A protruding column 52 is provided on the side of the base 5 opposite the baffle member 12. The baffle member 12 is provided with a through hole, wherein the protruding column 52 is movably inserted into the through hole, thereby achieving a movable connection between the base 5 and the fixing member 1. Preferably, multiple protruding columns 52 are provided at intervals on the base 5, corresponding to multiple through holes provided on the baffle member 12, to further improve the smoothness of the movement when the base 5 and the fixing member 1 move relative to each other. In this embodiment, the baffle member 12 can be fixedly connected to the work surface by mutual bonding or by bolting.

[0039] Further, the baffle piece 12 is further provided with a positioning hole, and the adjusting piece 2 is a bolt piece, wherein the bolt piece is arranged through the positioning hole and abuts against the base 5, and the bolt piece is threadedly connected to the positioning hole. Since the fixing piece 1 is fixedly connected to the workbench top, when the bolt piece is screwed, the base 5 is away from the fixing piece 1, so that the first protruding part 51 and the fixing piece 1 can clamp the nonmetallic material sample 100 with a smaller width. By adjusting the extension degree of the bolt piece relative to the baffle piece 12, the nonmetallic material pre-crack processing device can clamp and fix nonmetallic material samples 100 with different sizes. Preferably, an electromagnet is arranged at the position opposite to the positioning hole of the base 5. The electromagnet can be controlled to be powered on and powered off by an infrared remote control device. The bolt piece abuts against the electromagnet after being arranged through the positioning hole, and the bolt piece is provided with a ferromagnetic material at the end thereof facing the electromagnet. The ferromagnetic material on the bolt piece and the electromagnet are magnetically attracted to each other. The impact force generated when the impact assembly 4 impacts the impact knife 3 does not cause the position of the base 5 and the fixing piece 1 to change, thereby ensuring that the nonmetallic material sample 100 can be stably clamped between the first protruding part 51 and the fixing piece 1 each time the impact is performed, and further ensuring the consistency of the pre-crack processing on the nonmetallic material sample 100. The ferromagnetic material on the bolt piece can be selected from an iron sheet, a nickel sheet and a cobalt sheet. In the embodiment, after the first protruding part 51 and the fixing piece 1 stably clamp the nonmetallic material sample 100 by adjusting the bolt piece, the electromagnet is powered on by controlling the infrared remote control device. When it is needed to remove the nonmetallic material sample 100, the electromagnet is powered off by controlling the infrared remote control device. The technology of controlling the power on and power off of the electrical components by the infrared remote control device has been widely used in daily life, such as televisions, air conditioners and other devices. The infrared remote control technology can refer to the existing technology principle, and will not be described in detail here.

[0040] As preferred, as Figure 1 , Figure 2 , Figure 5 and Figure 6As shown in the middle, the main frame 11 has a protruding block 111 towards the adjusting member 2, and the base 5 is provided with a avoiding hole 54, the protruding block 111 is placed in the avoiding hole 54, which can reduce the occupied space of the fixing member 1 and the base 5, and make the non-metal material prefabricated crack processing device miniaturized. Specifically, the non-metal material sample 100 is attached to the protruding block 111, and the strip-shaped slot 1111 is placed on the protruding block 111, the setting of the protruding block 111 can increase the contact area of the impact knife 3 and the fixing member 1, when the impact assembly 4 impacts the impact knife 3, the impact knife 3 can more smoothly impact into the inside of the non-metal material sample 100 along the strip-shaped slot 1111 and the wedge-shaped notch 101, further ensuring the consistency of the prefabricated crack on the non-metal material sample 100. Among them, the base 5 is provided with a guide slot 53 opposite to the strip-shaped slot 1111, part of the blade of the impact knife 3 is placed in the guide slot 53, the setting of the guide slot 53 is used to make the impact knife 3 can impact the non-metal material sample 100 in all directions when the impact assembly 4 impacts the impact knife 3, further improving the consistency of the prefabricated crack between different non-metal material samples 100.

[0041] As shown in the middle, the main frame 11 has a protruding block 111 towards the adjusting member 2, and the base 5 is provided with a avoiding hole 54, the protruding block 111 is placed in the avoiding hole 54, which can reduce the occupied space of the fixing member 1 and the base 5, and make the non-metal material prefabricated crack processing device miniaturized. Specifically, the non-metal material sample 100 is attached to the protruding block 111, and the strip-shaped slot 1111 is placed on the protruding block 111, the setting of the protruding block 111 can increase the contact area of the impact knife 3 and the fixing member 1, when the impact assembly 4 impacts the impact knife 3, the impact knife 3 can more smoothly impact into the inside of the non-metal material sample 100 along the strip-shaped slot 1111 and the wedge-shaped notch 101, further ensuring the consistency of the prefabricated crack on the non-metal material sample 100. Among them, the base 5 is provided with a guide slot 53 opposite to the strip-shaped slot 1111, part of the blade of the impact knife 3 is placed in the guide slot 53, the setting of the guide slot 53 is used to make the impact knife 3 can impact the non-metal material sample 100 in all directions when the impact assembly 4 impacts the impact knife 3, further improving the consistency of the prefabricated crack between different non-metal material samples 100. Figure 1 、 Figure 2 、 Figure 6 and Figure 7 As shown in the middle, the base 5 is provided with a second protruding part 55 opposite to the first protruding part 51, and the impact assembly 4 includes a fixed sleeve 41, a spring member 42 and an impact member 43, wherein the fixed sleeve 41 is connected with the second protruding part 55, the impact member 43 includes a connecting rod 431 and a resisting member 432, wherein the connecting rod 431 penetrates through the fixed sleeve 41 and is movably connected with the fixed sleeve 41, the spring member 42 is sleeved on the outer periphery of the fixed sleeve 41 and the connecting rod 431, and the resisting member 432 is located at one end of the connecting rod 431 towards the impact knife 3, and the spring member 42 is abutted between the resisting member 432 and the second protruding part 55. When the connecting rod 431 is pulled away from the impact knife 3, the spring member 42 is compressed, and when the external pulling force is removed, the spring member 42 releases the elastic force, so that the impact member 43 impacts the impact knife 3, and then the impact knife 3 gradually enters the inside of the non-metal material sample 100 to form the prefabricated crack. The setting of the fixed sleeve 41 can make the pulling stroke of the connecting rod 431 consistent each time, and then the impact member 43 can impact the impact knife 3 with a fixed force each time, so as to ensure the consistency of the prefabricated crack processing in different non-metal material samples 100. In the embodiment, according to the design of the layout of the non-metal material prefabricated crack processing device, part of the impact assembly 4 is placed in the avoiding hole 54, so that the layout of the non-metal material prefabricated crack processing device is more compact, and the whole is more miniaturized.

[0042] Preferably, the fixing sleeve 41 is detachably connected with the second protruding part 55, so that the impact force of the impact assembly 4 on the impact knife 3 can be adjusted by replacing the fixing sleeve 41 with different length specifications. For example, an external thread is arranged at the end of the fixing sleeve 41 connected with the second protruding part 55, an assembly hole is arranged on the second protruding part 55, and an internal thread is arranged on the assembly hole, so that the fixing sleeve 41 and the second protruding part 55 can be detachably connected by screwing the external thread and the internal thread with each other.

[0043] Preferably, a handle 44 is arranged at the end of the connecting rod 431 away from the resisting part 432, so that the connecting rod 431 can be pulled more conveniently by the processing personnel.

[0044] In the embodiment, the axis of the impact assembly 4 is at the same height as the central section of the non-metal material sample 100 along the height direction, so that the impact force of the impact assembly 4 on the non-metal material sample 100 is uniform, and the impact knife 3 will not be turned over, so that the consistency of the prefabricated cracks of different non-metal material samples 100 is further ensured. Specifically, the axis of the connecting rod 431 in the impact assembly 4 is at the same height as the central section of the non-metal material sample 100 along the height direction.

[0045] In the embodiment, the working principle of the non-metal material prefabricated crack processing device is as follows: when the non-metal material is processed to have prefabricated cracks, the non-metal material sample 100 is placed to be attached to the fixing part 1, the adjusting part 2 is adjusted, the non-metal material sample 100 is clamped and fixed between the first protruding part 51 and the fixing part 1, the impact knife 3 is placed in the strip-shaped gap 1111, the blade of the impact knife 3 is placed in the wedge-shaped notch 101 of the non-metal material sample 100, the connecting rod 431 is pulled away from the impact knife 3 to compress the spring part 42, and after the external force is removed, the impact part 43 impacts the impact knife 3 under the action of the spring part 42 releasing the elastic force, so that the impact knife 3 gradually enters the non-metal material sample 100 through the wedge-shaped notch 101 to form the prefabricated cracks.

[0046] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A non-metallic material pre-crack processing device, configured to process a non-metallic material sample to form a pre-crack, characterized in that: The non-metallic material prefabricated crack processing device includes: A fixing member and an adjusting member, wherein the fixing member is fixedly placed on a work surface, the adjusting member is placed on one side of the fixing member, and the adjusting member is configured to make the non-metallic material sample fit the fixing member; An impact assembly and an impact knife, wherein the impact assembly is located on the side of the fixing member away from the adjusting member and is spaced apart from the fixing member, a wedge-shaped cut is provided on the side of the non-metallic material sample facing the impact assembly, and the fixing member is provided with a strip slit opposite to the wedge-shaped cut, the impact knife is clamped in the strip slit and can move along the strip slit, a side of the impact knife facing the impact assembly is partially exposed in the strip slit, and a blade is provided on the side of the impact knife away from the impact assembly, the blade is placed in the wedge-shaped cut, and the impact assembly can impact the impact knife with a fixed force.

2. The non-metallic material prefabricated crack processing device according to claim 1, characterized in that: The non-metallic material prefabricated crack processing device also includes a base, which is movably connected to the fixing member. The base includes a first protrusion, which is located between the fixing member and the adjusting member. The adjusting member can adjust the relative position of the base and the fixing member so that the non-metallic material sample is clamped between the first protrusion and the fixing member.

3. The non-metallic material prefabricated crack processing device according to claim 2, characterized in that: The fixing part includes a main frame part and a baffle part that are fixedly connected. The main frame part is located on the base, and the baffle part faces the side of the base and is fixedly connected to the work surface. A protruding column is provided on the side of the base opposite to the baffle part, and a through hole is provided on the baffle part. The protruding column is movably inserted into the through hole.

4. The non-metallic material prefabricated crack processing device according to claim 3, characterized in that: The baffle member is further provided with a positioning hole, and the adjusting member is a bolt member. The bolt member is passed through the positioning hole and abuts against the base, and the bolt member is threadedly connected to the positioning hole.

5. The non-metallic material prefabricated crack processing device according to claim 4, characterized in that: An electromagnet is provided at a position opposite to the base and the positioning hole, the bolt member is in contact with the electromagnet, and a ferromagnetic material is provided at one end of the bolt member facing the electromagnet.

6. The non-metallic material prefabricated crack processing device according to claim 3, characterized in that: The main frame has a protruding block facing the adjusting member, the base is provided with an avoidance hole, the protruding block is placed in the avoidance hole, the non-metallic material sample is fitted with the protruding block, the strip slit is placed on the protruding block, the base is provided with a guide slit opposite to the strip slit, and part of the blade of the impact knife is placed in the guide slit.

7. The non-metallic material prefabricated crack processing device according to claim 2, characterized in that: The base includes a second protrusion opposite to the first protrusion, the impact assembly includes a fixing sleeve, a spring member and an impact member, the fixing sleeve is connected to the second protrusion, the impact member includes a connecting rod and a stop member, the connecting rod passes through the fixing sleeve and is movably connected to the fixing sleeve, the spring member is sleeved on the outer circumference of the fixing sleeve and the connecting rod, the stop member is located at one end of the connecting rod facing the impact knife, and the spring member abuts between the stop member and the second protrusion.

8. The non-metallic material prefabricated crack processing device according to claim 7, characterized in that: The fixing sleeve is detachably connected to the second protruding portion.

9. The non-metallic material pre-crack processing device according to claim 7, characterized in that: A handle is provided at one end of the connecting rod away from the blocking member.

10. The non-metallic material pre-crack processing device according to any one of claims 1 to 9, characterized in that: The axis of the impact assembly and the central cross section of the non-metallic material sample along the height direction are at the same height.

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