Cultural relic internal defect detection fixing device and cultural relic internal defect detection system

Abstract

The utility model relates to the field of cultural relic defect detection, in particular to a cultural relic internal defect detection fixing device and a cultural relic internal defect detection system, which are particularly suitable for internal defect detection of stone cultural relics. The utility model relates to a cultural relic internal defect detection fixing device, which is used for relatively fixing a to-be-detected cultural relic and a probe for detecting internal defects of the to-be-detected cultural relic, and comprises a base part, a fastening part and a tensioning part, the tensioning part is fixedly connected with the base part and is used for adjusting the tensioning degree of the base part around the cultural relic to be tested, the base part is provided with test holes corresponding to a plurality of set positions of the cultural relic to be tested, the test holes are used for at least accommodating the probes, the fastening part comprises a connecting piece and an abutting piece, and the abutting piece is used for abutting against the connecting piece. One end of the connecting piece is fixedly connected with the base part, the other end of the connecting piece is provided with an adjusting hole used for being in threaded connection with an abutting piece, and the abutting piece is used for penetrating through the adjusting hole to abut against the probe.

Description

Technical Field

[0001] The utility model relates to the field of cultural relic defect detection, in particular to a cultural relic internal defect detection fixture and a cultural relic internal defect detection system, which are particularly suitable for internal defect detection of stone cultural relics. Background Art

[0002] China, a nation steeped in history and civilization, has preserved a wealth of tangible cultural heritage through its long history of development, with grotto temples being a prominent example. As typical immovable cultural relics, grottoes, exposed to the elements for hundreds and thousands of years, inevitably suffer from various types and degrees of weathering, such as massive, strip-like, flaky, and powdery weathering. To protect humanity's shared cultural heritage, studying the mechanisms that form these weathering damages is crucial for effective conservation. Given the historical, artistic, and scientific value of grottoes, as the primary vehicle for their value, direct weathering experiments on the artifacts themselves are strictly prohibited. Laboratory simulations are the primary method for this purpose.

[0003] The type of weathering damage to cultural relics depends primarily on their lithology and the environment in which they were discovered. However, cave temples are widely distributed (arid, semi-arid, semi-humid, and humid) and encompass a variety of lithologies (sandstone, limestone, granite, etc.). Therefore, to realistically simulate the weathering process of cultural relics, the specimens required must be collected from the mountains where the grottoes are located and prepared in the laboratory to the desired size and shape, using laboratory equipment to simulate the local climate. Grotto artifacts are primarily composed of rock, which, due to its inherent structure and subsequent human disturbance, contains pores, cracks, and inclusions, significantly different from actual field conditions. To improve simulation results and ensure they accurately reflect the actual weathering process of cultural relics, while minimizing the influence of the specimens themselves, sample screening is necessary before testing. Generally, visual inspection is used in the laboratory to determine the presence of local defects in specimens, but this method only observes the surface. Internal testing relies on ultrasonic testing. Ultrasonic testing involves transmitting ultrasonic waves from one surface of the sample to the other, and then measuring the wave velocity at a known distance between the two probes to determine the presence of defects.

[0004] However, in actual operation, due to different simulation test purposes, the size and shape of the samples vary significantly. When using ultrasonic testing, there are either problems such as the probe being larger than the sample size, the sample being irregularly shaped and unable to be covered by the probe, or the probe being small and expensive, resulting in a high cost per test. Specifically, on the one hand, freeze-thaw, salt crystallization, and capillary water rise tests in the laboratory generally use square, rectangular, and cylindrical objects with sizes ranging from 10mm to 100mm. Since common rock ultrasonic probes on the market are often larger than 30mm in diameter and circular in shape, conventional ultrasonic probes cannot meet the function of sample screening, and the test results often cause certain deviations; on the other hand, if a small probe is selected, the small probe is often expensive, resulting in a significant increase in test costs.

[0005] Therefore, the existing technology is in urgent need of improvement. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a device for detecting internal defects of cultural relics and a system for detecting internal defects of cultural relics, so as to reduce the experimental cost in detecting internal defects of cultural relics.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention adopts the following technical solution: a device for detecting and fixing internal defects of cultural relics, which is used to relatively fix the cultural relic to be tested and a probe for detecting internal defects of the cultural relic to be tested, and includes a base, a fastening part and a tensioning part. The base is used to at least partially fit with the cultural relic to be tested, and the tensioning part is fixedly connected to the base for adjusting the tension of the base around the cultural relic to be tested. The base is provided with test holes at multiple set positions corresponding to the cultural relic to be tested, and the test holes are used to accommodate at least the probe, wherein the fastening part includes a connecting member and an abutting member, one end of the connecting member is fixedly connected to the base, and the other end is provided with an adjustment hole for threaded connection with the abutting member, and the abutting member is used to pass through the adjustment hole and abut against the probe.

[0008] As an embodiment of the present invention, a gasket is fixedly provided at one end of the abutment member close to the probe, and the gasket is used to fit partially with the probe, wherein at least one of the abutment member and the gasket is made of insulating material.

[0009] As an embodiment of the present invention, each of the test holes is correspondingly provided with two fastening parts, and the two fastening parts are arranged opposite to each other on the upper and lower sides of the test hole, and the two fastening parts jointly complete the abutment and fixation of the probe; and / or, the base is the connecting part, and the base is provided with an adjustment hole that passes through the test hole, and the adjustment hole is adjustably connected to the abutment bolt, and the abutment passes through the adjustment hole and abuts the probe in the test hole.

[0010] As an embodiment of the present invention, the base is a strip of flexible belt, the fixed end of the base is fixedly connected to the tensioning part, and the movable end of the base is detachably connected to the tensioning part to form a closed loop with adjustable size so that the base and the cultural relic to be tested are at least partially fitted.

[0011] As an embodiment of the present utility model, the base is a belt, the tensioning part is an automatic belt buckle, and a plurality of flanges matching the automatic belt buckle are provided on the movable end of the base along the length direction. The movable end is used to pass through the automatic belt buckle and be detachably connected with the automatic belt buckle.

[0012] As an embodiment of the present invention, the tensioning part is a connecting buckle, and the movable end is provided with a plurality of through holes matching the connecting buckle along the length direction. The connecting buckle is selectively engaged with any through hole to form closed loops of different sizes.

[0013] As an embodiment of the present invention, the base is an annular elastic band, the base is the tensioning portion, and the base is used to elastically expand and contract to a corresponding degree according to the size of the artifact to be measured.

[0014] In a second aspect, the present invention provides a cultural relic internal defect detection system for detecting internal defects in a conductive cultural relic to be tested, comprising a resistance detection device, a probe, and the cultural relic internal defect detection fixture as described in the first aspect of the present invention, wherein the probe is configured to selectively contact a plurality of set locations on the surface of the cultural relic to be tested, the cultural relic internal defect detection fixture is configured to relatively fix the cultural relic to be tested and the probe, the resistance detection device is electrically connected to the probe, and a plurality of the probes, the resistance detection device, and the cultural relic to be tested form a detection circuit, and the resistance detection device is configured to detect the resistance between the set locations of the cultural relic to be tested contacted by the plurality of probes.

[0015] As an implementation manner of the present utility model, the conductive cultural relic to be tested is a water-saturated stone cultural relic.

[0016] As an embodiment of the present invention, a judgment device is further included. The judgment device is electrically connected to the resistance detection device and is used to judge whether the cultural relic to be tested has internal defects based on the detection result of the resistance detection device.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The artifact internal defect detection system of the present invention can effectively measure the internal defects of artifacts under test, ensuring the accuracy of the measurement results. Furthermore, due to the presence of the artifact internal defect detection fixture, there is no need to consider different probes for different types and sizes of artifacts under test, which can significantly reduce testing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a diagram of the device of the cultural relic internal defect detection system provided by the present utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the device for detecting and fixing internal defects of cultural relics provided by the utility model;

[0022] Figure 3 This is a structural diagram of the base of the device for detecting and fixing internal defects of cultural relics provided by the present invention;

[0023] Figure 4 This is a connection diagram of the cultural relic internal defect detection system provided by the utility model;

[0024] Figure 5 This is a three-dimensional diagram of another device for detecting and fixing internal defects of cultural relics provided by the present invention;

[0025] Figure 6 The utility model provides Figure 5 AA cross-section diagram.

[0026] Description of reference numerals:

[0027] 100, device for detecting and fixing internal defects of cultural relics; 110, base; 111, test hole; 112, through hole; 120, fastening portion; 121, adjustment hole; 122, abutment member; 130, tensioning portion;

[0028] 200, probe;

[0029] 300, resistance detection device;

[0030] 400, cultural relics to be tested. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "up", "down", "left", "right", "front", and "back", generally refer to the up, down, left, and right of the device in actual use or working state, specifically the drawing direction in the accompanying drawings.

[0032] It should be noted that the order of description of the following embodiments does not limit the preferred order of the embodiments of the present invention. In addition, in the following embodiments, the description of each embodiment has its own focus. For parts not described in detail in one embodiment, please refer to the relevant description of other embodiments.

[0033] See also Figure 1-4 The figure shows a system for detecting internal defects in a cultural relic, which is used to detect internal defects in a conductive cultural relic 400 to be tested. The system includes a fixture 100 for detecting internal defects in a cultural relic, a probe 200, and a resistance detection device 300. The probe 200 and the resistance detection device 300 are electrically connected. The resistance detection device 300 is preferably an ohmmeter, or other device capable of detecting resistance values, but this is not limited in the present invention. The fixture 100 for detecting internal defects in a cultural relic is detachably mounted around the surface of the cultural relic 400 to be tested. The fixture 100 is used to relatively fix the cultural relic 400 to be tested and the probe 200. The probe 200 is used to selectively contact multiple set locations on the surface of the cultural relic 400 to be tested. The multiple probes 200, the resistance detection device 300, and the cultural relic 400 to be tested form a detection circuit, so that the resistance detection device 300 can detect the resistance between the set locations of the cultural relic 400 to be tested contacted by the multiple probes 200.

[0034] Furthermore, the cultural relic internal defect detection system further includes a determination device electrically connected to the resistance detection device 300 for determining whether the cultural relic 400 to be tested has internal defects based on the detection result of the resistance detection device 300. The determination device is preferably a computer or a cloud server.

[0035] It should be noted that the conductive artifact 400 to be tested can be inherently conductive, or it can be rendered conductive through subsequent manipulation. For example, if the artifact 400 to be tested is a grotto artifact, since grotto artifacts are mostly made of rock and inherently non-conductive, the artifact can be fully saturated with water before being inspected using the artifact internal defect detection system provided by the present invention. Of course, it is also understood that in addition to rendering the artifact conductive through saturation, other methods of rendering the artifact 400 conductive also fall within the scope of protection of this solution.

[0036] Taking grotto artifacts as an example, when inspecting for internal defects, the artifact is first saturated with water. This process is unnecessary for inherently conductive artifacts. Probes 200 are then brought into contact with the artifact. Multiple probes 200 are placed in contact with the artifact at designated locations. A resistance detection device then measures the resistance across the probes 200. The resistance measurements at these locations determine whether the artifact contains internal defects such as holes or cracks.

[0037] It is understandable that in the prior art, internal defects of the artifact 400 to be tested are mainly detected by ultrasound. However, since conventional ultrasonic probes cannot meet the sample screening function, the test results often have certain deviations, and small probes often have the problem of high prices and high costs for single tests.

[0038] Therefore, after creative research, the inventors developed the present invention's internal defect detection system for artifacts. By making the artifact conductive and then subjecting it to resistance treatment, the system effectively measures internal defects in the artifact, ensuring the accuracy of the measurement results. Furthermore, thanks to the fixture 100 for detecting internal defects in artifacts, there's no need to select different probes 200 for different types and sizes of artifacts, significantly reducing testing costs.

[0039] Please continue reading Figure 1-4 , the cultural relic internal defect detection and fixing device 100 will be further described below.

[0040] The fixture 100 for detecting internal defects in cultural relics includes a base 110, a fastening portion 120, and a tensioning portion 130. The base 110 is designed to be wrapped around the cultural relic to be tested and at least partially conform to the cultural relic. The fastening portion 120 is fixedly mounted on the base 110. The tensioning portion 130 is fixedly connected to the base 110 and is used to adjust the tension of the base 110 around the cultural relic to be tested. Test holes 111 are provided on the base 110 at locations corresponding to multiple set positions of the cultural relic to be tested. The dimensions of the test holes 111 are no smaller than those of the probe 200 to accommodate the dimensions of the probe 200. Preferably, the dimensions of the test holes 111 match those of the probe 200. A plurality of fastening portions 120 are provided and fixedly mounted on the base 110. The fastening portions 120 are respectively arranged to correspond to the multiple test holes 111 of the base 110. The fastening portions 120 are used to secure the probe 200 to maintain relative stationary position between the probe 200 and the base 110.

[0041] Please continue reading Figure 1-2 , the fastening portion 120 is used to fasten the probe 200 to keep the probe 200 and the base 110 relatively still. The fastening portion 120 includes a connecting member and an abutment 122, and the connecting member is fixedly provided on the base 110 for connecting the base 110 and the abutment 122. An adjustment hole is provided at one end of the connecting member away from the base 110 for adjustable fixed connection with the abutment 122, such as a threaded connection or an elastic telescopic connection, preferably a threaded connection. When the connecting member is threadedly connected to the abutment 122, the adjustment hole 121 is a threaded hole, and at least a portion of the side wall of the abutment 122 is provided with a thread matching the adjustment hole, and the abutment 122 passes through the adjustment hole and abuts against the probe 200 to achieve fixation of the probe 200.

[0042] It should be noted that the connecting member can be provided separately from the base 110 or can be provided integrally with the base. Figure 5-6 , the connecting member is integrally provided with the base 110. In this case, the base 110 serves as the connecting member. The base 110 is provided with an adjustment hole 121 that passes through the test hole. The adjustment hole 121 is adjustably connected to the abutment 122 by a bolt. The abutment 122 passes through the adjustment hole 121 and abuts against the probe 200 in the test hole 111. That is, the base 110 is provided with an adjustment hole 121 with a threaded inner wall. The adjustment hole 121 is provided in the upper and lower directions of the base 110 and is perpendicular to the probe 200. The adjustment hole 121 passes through the test hole. The abutment 122 is adjustably connected to the adjustment hole 121 by a thread. The abutment 122 passes through the adjustment hole 121 and abuts and fixes the probe 200.

[0043] It is understood that the number of fastening portions 120 corresponding to a single test hole 111 can be one or more, as long as the probe 200 can be relatively fixed to the base 110. In a specific embodiment, the base 110 itself is relatively thick. In this case, each test hole 111 corresponds to only one fastening portion 120. The fastening portion 120 acts together with the inner wall of the test hole 111 of the base 110 to abut the probe 200, thereby achieving relative fixation between the base 110 and the probe 200.

[0044] In another alternative embodiment, each test hole 111 corresponds to two fastening portions 120, and the two fastening portions 120 are arranged on both sides of the test hole 111 facing each other. Figure 2 In this specific embodiment, the two fastening parts 120 are respectively arranged on the upper and lower sides of the test hole 111 to reduce the space occupied in the length direction of the base 110, and the two fastening parts 120 are arranged facing each other. The abutting columns of the two fastening parts 120 are respectively in contact with the probe 200 to achieve abutment and fixation of the probe 200, thereby achieving relative fixation of the probe 200 and the base 110.

[0045] Please continue reading Figure 2 , the abutment 122 is in non-conductive contact with the probe 200. In a specific embodiment, the abutment 122 itself is an insulating material. In another alternative embodiment, an insulating gasket is fixedly provided at one end of the abutment 122 in contact with the probe 200. The advantage of providing an insulating gasket is that, on the one hand, the abutment 122 and the probe 200 can be well fitted, and on the other hand, an insulated connection between the abutment 122 and the probe 200 can be achieved. Of course, in the case where the abutment 122 itself is an insulating member, better contact with the probe 200 can be achieved by adding a gasket. In this case, the gasket can be a soft gasket, and whether the soft gasket is insulating is not limited. That is, in the case where both the gasket and the abutment 122 are present, at least one of the gasket and the abutment 122 is made of an insulating material.

[0046] Please continue reading Figure 2 The probe 200 can be an iron nail, an iron block or a stainless steel product.

[0047] Please continue reading Figure 2-3 Base 110 is a long, flexible belt, such as a leather belt. Tensioning portion 130 is fixedly mounted at one end of base 110, defined as the fixed end, and the other end of base 110, defined as the movable end. Tensioning portion 130 is detachably connected to the movable end of base 110 to form a closed loop with adjustable size, allowing base 110 to fit at least partially around the artifact under test.

[0048] In a specific embodiment, the tensioning portion 130 is an automatic belt buckle, which is fixed to one end of the base 110. A plurality of flanges matching the automatic belt buckle are provided on the movable end of the base 110 along the length direction. The movable end can pass through the automatic belt buckle on the fixed end of the base 110 to form a closed loop, so that the automatic belt buckle can be selectively detachably connected to any one of the multiple flanges of the base 110.

[0049] Preferably, the flange is provided on the side facing away from the base 110 and connected to the fastening portion 120 . More preferably, the flange is provided on the side of the base 110 facing the artifact to be measured, and the fastening portion 120 is provided on the side of the base 110 away from the artifact to be measured.

[0050] In another alternative embodiment, the tensioning portion 130 is a connecting buckle secured to the fixed end of the base 110. The movable end is provided with multiple through-holes 112 along its length that match the connecting buckle. The connecting buckle selectively engages with any through-hole 112 to form a closed loop of varying sizes. When the base 110 is to at least partially fit the artifact under test, the connecting buckle selects a through-hole 112 that matches the size of the artifact to achieve at least partial fit between the base 110 and the artifact under test.

[0051] exist Figure 2-3 In this specific embodiment, the through hole 112 is different in size from the test hole 111. In some other alternative embodiments, the through hole 112 is the same as the test hole 111. That is, the test hole 111 is used to accommodate the probe 200 and is also used to engage with the connector.

[0052] Of course, the base 110 can be a long flexible strip or a ring-shaped elastic band. The base 110 itself is elastically expandable and contractible to varying degrees depending on the size of the artifact to be tested, so that the base 110 at least partially conforms to the artifact. In this case, the tensioning portion 130 is the base 110.

[0053] Experimental Example 1

[0054] Three cylindrical specimens measuring 50 x 100 mm were prepared from fresh sandstone from the Yungang Grottoes, a World Cultural Heritage site. The cylindrical specimens were first pretreated using the following steps: The surface of the specimens was wiped clean with a brush. The specimens were then dried in an oven at 110°C for 24 hours and cooled to room temperature. The cooled specimens were then placed in a vacuum dish filled with deionized water and evacuated. Once the specimens were fully saturated with water, they were removed from the dish. The remaining surface water was gently wiped with paper and the specimens were wrapped in plastic wrap to prevent rapid evaporation of surface moisture due to high outdoor temperatures. (The wrapping is optional for lower room temperature conditions.)

[0055] Based on the size of the sample being tested, and taking into account the potential for holes and cracks within the sample, the sample was evenly divided into 10 equal parts, and further divided into 6 equal parts along the circumferential direction. The probe 200 was secured relative to the artifact internal defect detection fixture 100, ensuring that the probe 200 was securely fixed and not loose.

[0056] Secondly, place the artifact internal defect detection fixture 100 with the probe 200 along the previously determined measurement points. After the above work is completed, place the resistance detection device, such as the test pen on the resistance meter, on the probe 200 and select the appropriate resistance range to measure the resistivity between the corresponding two points. Figure 4 Repeat the above steps, measure each point one by one, record its value, and compare the value to determine if there is any obvious inconsistency with other measured values ​​and re-measure it. If all measured values ​​are within a reasonable range, there are no holes or cracks inside the sample, and the sample can be used as a qualified sample for the simulated weathering test. Otherwise, it will be rejected and other suitable samples will be selected.

[0057] The above is a detailed introduction to the scheme of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0058] Reference throughout this specification to "one embodiment," "an embodiment," or "a specific embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout this specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, or characteristics of any specific embodiment of the invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the invention described and illustrated herein are possible in light of the teachings herein and are considered part of the spirit and scope of the invention.

[0059] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0060] In addition, unless otherwise expressly indicated, any marking arrows in the drawings should be regarded as illustrative only and not limiting. Furthermore, unless otherwise indicated, the term "or" as used herein is generally intended to mean "and / or." Where a term is unclear in providing separation or combination capabilities, the combination of components or steps will also be considered as indicated.

Claims

1. A device for detecting internal defects of cultural relics, used to relatively fix a cultural relic to be tested and a probe for detecting internal defects of the cultural relic to be tested, characterized in that: The probe comprises a base, a fastening portion and a tensioning portion, wherein the base is used to at least partially fit with the artifact to be tested, and the tensioning portion is fixedly connected to the base and is used to adjust the tension of the base around the artifact to be tested. The base is provided with test holes corresponding to multiple set positions of the artifact to be tested, and the test holes are used to accommodate the probe; wherein, The fastening portion includes a connecting piece and an abutting piece. One end of the connecting piece is fixedly connected to the base, and the other end is provided with an adjustment hole for adjustable fixed connection with the abutting piece. The abutting piece is used to pass through the adjustment hole and abut against the probe.

2. The device for detecting and fixing internal defects of cultural relics according to claim 1, characterized in that: A gasket is fixedly provided on one end of the abutment member close to the probe, and the gasket is used to partially fit with the probe, wherein at least one of the abutment member and the gasket is made of insulating material.

3. The device for detecting and fixing internal defects of cultural relics according to claim 1, characterized in that: Each of the test holes is correspondingly provided with two fastening parts, and the two fastening parts are arranged facing each other on the upper and lower sides of the test hole. The adjustment hole is a threaded hole for threaded connection with the abutment member, and the two fastening parts jointly complete the abutment and fixation of the probe; And / or, the base is the connecting member, an adjustment hole is provided on the base which passes through the test hole, the adjustment hole is adjustably connected to the abutment member by a bolt, and the abutment member passes through the adjustment hole and abuts against the probe in the test hole.

4. The device for detecting and fixing internal defects of cultural relics according to any one of claims 1 to 3, characterized in that: The base is a strip of flexible tape, the fixed end of the base is fixedly connected to the tensioning part, and the movable end of the base is detachably connected to the tensioning part to form a closed loop with adjustable size so that the base and the artifact to be tested are at least partially fitted.

5. The device for detecting and fixing internal defects of cultural relics according to claim 4, characterized in that: The base is a belt, the tensioning part is an automatic belt buckle, and a plurality of flanges matching the automatic belt buckle are provided on the movable end of the base along the length direction. The movable end is used to pass through the automatic belt buckle and be detachably connected to the automatic belt buckle.

6. The device for detecting and fixing internal defects of cultural relics according to claim 4, characterized in that: The tensioning portion is a connecting buckle, and the movable end is provided with a plurality of through holes matching the connecting buckle along the length direction. The connecting buckle is selectively engaged with any through hole to form closed loops of different sizes.

7. The device for detecting and fixing internal defects of cultural relics according to any one of claims 1 to 3, characterized in that: The base is an annular elastic band, the base is the tensioning portion, and the base is used to elastically expand and contract to a corresponding degree according to the size of the artifact to be measured.

8. A cultural relic internal defect detection system for detecting internal defects of a conductive cultural relic to be tested, characterized in that: The device comprises a resistance detection device, a probe, and the fixture for detecting internal defects of a cultural relic as claimed in any one of claims 1 to 7, wherein the probe is used to selectively contact a plurality of set positions on the surface of the cultural relic to be detected, the fixture for detecting internal defects of the cultural relic to be detected is used to relatively fix the cultural relic to be detected and the probe, the resistance detection device is electrically connected to the probe, a plurality of the probes, the resistance detection device, and the cultural relic to be detected form a detection circuit, and the resistance detection device is used to detect the resistance between the set positions of the cultural relic to be detected contacted by the plurality of probes.

9. The cultural relic internal defect detection system according to claim 8, characterized in that: The conductive cultural relic to be tested is a water-saturated stone cultural relic.

10. The cultural relic internal defect detection system according to claim 8, characterized in that: The device further comprises a judging device, which is electrically connected to the resistance detecting device and is used to judge whether the cultural relic to be tested has internal defects according to the detection result of the resistance detecting device.

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