Detection module for detecting whether fastening device is loosened or not and fastening system

Abstract

The invention relates to a detection module for detecting whether a fastening device is loosened or not and a fastening system. The detection module is mounted to the fastening device and located between the two clamping surfaces. The detection module comprises a first part which comprises an indication window; the second part can rotate relative to the first part and comprises an indication mark; and the elastic element is used for driving the second part to rotate relative to the first part. The second part comprises a first position used for indicating that the fastening device is normal and a second position used for indicating that the fastening device is loosened, in the first position, the indicating mark is located outside the indicating window and covered by the first part, and the elastic element is preloaded, and in the second position, at least one part of the indicating mark is exposed in the indicating window. When the fastening device is fastened, the second part is held in the first position in a non-rotatable manner, and when the fastening device is loosened, the second part rotates to the second position under the action of the elastic force of the preloaded elastic element.

Description

Technical Field

[0001] The present disclosure generally relates to the technical field of safety detection of fastening devices, and more particularly to a detection module for detecting whether a fastening device is loose, and a fastening system including the detection module. Background Art

[0002] Fastening devices (e.g., screws, studs, bolts and other threaded fastening devices or other types of fastening devices) are common fastening connection mechanisms in daily life and industrial applications. In some large infrastructures (e.g., buildings, bridges, tunnels, railway tracks, hydroelectric dams, wind turbines, etc.), whether the fastening devices fail due to loosening is directly related to the safety of these large infrastructures.

[0003] Fastening devices, especially threaded fastening devices, usually include three common failure modes, namely: 1) the entire fastening device is removed from or falls off the object on which it is installed (for example, the fastening device loses its grip due to sandification of wall concrete); 2) the long rod (such as a threaded rod) of the fastening device creeps and elongates, which may be caused by the slow deformation of the threaded rod under long-term force; 3) the threaded component of the fastening device (such as a threaded rod or a nut) loosens due to rotation, which may be caused by external impact, vibration, etc. Regardless of the failure mode, the fastening device will reduce or completely lose its fastening force due to loosening, thereby posing a safety hazard. Therefore, it is necessary to detect whether the fastening device is loose in real time or regularly.

[0004] At present, various detection devices or means have been used to detect whether the fastening device is loose or failed. These detection devices or means usually need to use various sensors to measure the force change, axial or rotational displacement change, acoustic change, length change of the threaded rod and other parameters of the fastening device for judgment. However, the detection device or means containing sensors is not only expensive, but also requires a special external power supply for the sensor, which makes it difficult to obtain widespread application in some cases and therefore has certain defects. Summary of the invention

[0005] One of the objects of the present disclosure is to overcome at least one of the deficiencies in the prior art and to achieve other additional advantages.

[0006] In a first aspect of the present disclosure, a detection module for detecting whether a fastening device is loose is provided. The detection module is configured to be mounted to the fastening device and located between two clamping surfaces, and the spacing between the two clamping surfaces can be reduced when the fastening device is tightened and can be increased when the fastening device is loose. The detection module comprises: a first component, wherein the first component comprises an indication window penetrating at least a portion of the first component; a second component capable of rotating relative to the first component, wherein the second component comprises an indication mark; and an elastic element for driving the second component to rotate the second component relative to the first component; wherein the second component comprises a first position for indicating that the fastening device is normal and a second position for indicating that the fastening device is loose, in the first position, the indication mark is located outside the indication window and is covered by the first component and the elastic element is preloaded, in the second position, at least a portion of the indication mark is exposed in the indication window; and wherein, when the fastening device is fastened, the second component is non-rotatably held in the first position, and when the fastening device is loose, the second component rotates to the second position under the elastic force of the preloaded elastic element.

[0007] According to one embodiment of the present disclosure, the indicator mark is a colored portion or a patterned portion of the second component.

[0008] According to an embodiment of the present disclosure, the second component further includes a pushing element for pushing the second component to the first position and preloading the elastic element simultaneously.

[0009] According to an embodiment of the present disclosure, the pushing element is configured as a pushing handle, wherein the pushing handle is formed integrally with or separately from the second component.

[0010] According to one embodiment of the present disclosure, the pushing element is selected from at least one of the following: a protrusion, a recess, a friction portion having a rough surface, and an opening for receiving an external pushing member.

[0011] According to one embodiment of the present disclosure, the pushing element can be accessed via the indication window.

[0012] According to an embodiment of the present disclosure, the indicator mark and the indicator window have substantially the same size and shape, and the amount of the indicator mark exposed in the indicator window is used to indicate the degree of loosening of the fastening device.

[0013] According to an embodiment of the present disclosure, the first component is configured as a circular gasket, and the indication window is fan-shaped.

[0014] According to an embodiment of the present disclosure, the second component is configured as a rotatable disk.

[0015] According to one embodiment of the present disclosure, the elastic element is selected from at least one of the following: a torsion spring arranged around the periphery of the second component, a disc torsion spring arranged around the center of the second component and between the center of the second component and the periphery of the second component, two tension springs arranged diametrically and oppositely around the periphery of the second component, and a torsion spring arranged between the first component and the second component.

[0016] According to an embodiment of the present disclosure, the second component is configured as a rotatable sector.

[0017] According to an embodiment of the present disclosure, the second component is rotatably connected to the first component via a connecting element.

[0018] According to one embodiment of the present disclosure, the connecting element includes a bearing.

[0019] According to one embodiment of the present disclosure, the fastening device includes an elongated body extending axially, the first component includes a first hole for the elongated body to extend through, and the second component includes a second hole for the elongated body to extend through, so that the detection module can be mounted on the elongated body of the fastening device.

[0020] According to an embodiment of the present disclosure, the second component is located below or inside the first component.

[0021] According to an embodiment of the present disclosure, the first component includes a front gasket and a rear gasket, the front gasket includes a recessed portion for placing the second component, and the rear gasket can press the second component to prevent the second component from rotating when the fastening device is fastened.

[0022] According to an embodiment of the present disclosure, the front gasket includes a flange protruding from a center position thereof into the recessed portion, and a bearing is mounted on the flange to rotatably connect the second component to the front gasket.

[0023] According to one embodiment of the present disclosure, the indication window is provided on a front gasket of the first component.

[0024] In a second aspect of the present disclosure, a fastening system is provided, the fastening system comprising a fastening device and a detection module according to the present disclosure.

[0025] According to one embodiment of the present disclosure, the fastening device includes a head and an elongated body extending from the head toward one side, and the detection module is mounted on the elongated body and is located between a lower surface of the head and an upper surface of a load.

[0026] It should be noted that the various aspects of the present disclosure described for one embodiment may be included in other different embodiments, although not specifically described for the other different embodiments. In other words, all embodiments and / or features of any embodiment may be combined in any manner and / or combination, as long as they are not mutually contradictory. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Aspects of the present disclosure will be better understood after reading the following detailed description in conjunction with the accompanying drawings.

[0028] Figure 1 and Figure 2 are respectively a schematic top view and a bottom view of a detection module for detecting whether a fastening device is loose according to an embodiment of the present disclosure;

[0029] Figure 3 is an exploded perspective view of a detection module and a fastening system including the detection module according to another embodiment of the present disclosure;

[0030] Figure 4 yes Figure 3 A top view of the detection module and the fastening system shown;

[0031] Figure 5 and Figure 6 Along the Figure 4 The exploded sectional view and assembly sectional view of the detection module and fastening system taken along line AA in FIG.

[0032] It should be understood that like reference numerals refer to like elements throughout the drawings. In the drawings, the dimensions of certain features may be varied and not drawn to scale for clarity. DETAILED DESCRIPTION

[0033] The present disclosure will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present disclosure. However, it should be understood that the present disclosure can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully illustrate the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0034] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0035] The singular forms "a", "said" and "the" used in the specification include plural forms unless clearly indicated. The terms "include", "comprise" and "contain" used in the specification indicate the presence of the claimed features, but do not exclude the presence of one or more other features. The term "and / or" used in the specification includes any and all combinations of one or more of the relevant listed items.

[0036] In the specification, when an element is referred to as being “on,” “attached to,” “connected to,” “coupled to,” or “contacting” another element, etc., the element may be directly on, attached to, connected to, coupled to, or contacting another element, or intervening elements may be present.

[0037] In the specification, the terms "first", "second", "third", etc. are only used for convenience of description and are not intended to be limiting. Any technical features represented by "first", "second", "third", etc. are interchangeable.

[0038] In the specification, spatial relational terms such as "upper", "lower", "front", "back", "top", "bottom", etc. may describe the relationship of one feature to another feature in the drawings. It should be understood that the spatial relational terms include different orientations of the device in use or operation in addition to the orientation shown in the drawings. For example, when the device in the drawings is turned over, features previously described as being "below" other features may now be described as being "above" the other features. The device may also be otherwise oriented (rotated 90 degrees or in other orientations), and the relative spatial relationships will be interpreted accordingly.

[0039] The present disclosure relates to a detection module for detecting whether a fastening device is loose, and a fastening system including the detection module. In the present disclosure, the term "fastening device" may refer to a threaded fastening device (including: a screw, a stud, a bolt or the like, and a nut, a washer, etc. used in conjunction with the screw, the stud, the bolt or the like), or other types of non-threaded fastening devices. Preferably, the fastening device of the present disclosure may at least include an elongated body extending along the axial direction.

[0040] Reference Figure 1 and Figure 2, shows a detection module 10 for detecting whether a fastening device 1 is loose according to an embodiment of the present disclosure. In this embodiment, the fastening device 1 can be a threaded fastening device such as a screw, a bolt, a stud or other having an elongated body. The detection module 10 can be mounted to the fastening device 1 (in particular, it can be mounted on the elongated body of the fastening device 1) and is located between two clamping surfaces. The spacing between the two clamping surfaces can be reduced when the fastening device 1 is tightened and can be increased when the fastening device 1 is loose. In the present disclosure, the two clamping surfaces can be any two surfaces suitable for clamping or loosening the detection module 10 as the tightening force of the fastening device changes, which can be selected from any two of the following surfaces: the clamping surface of the fastening device (for example, the head of the fastening device), the upper and lower surfaces of the washer used in conjunction with the fastening device, the clamping surface of the nut used in conjunction with the fastening device, the surface of the load tightened by the fastening device, the surface of the object on which the fastening device is mounted (for example, a wall, a track, a tower, etc.), or any other suitable surface.

[0041] like Figure 1 and Figure 2 As shown, the detection module 10 may include a first component 11, a second component 12 that can rotate relative to the first component 10, and an elastic element 13 for driving the second component 12 to rotate relative to the first component 11. The second component 12 may be located inside or below the first component 10, so that the second component 12 can be at least partially covered by the first component 10 when in use.

[0042] The first component 10 may include an indication window 14 that passes through at least a portion of the first component 10. The second component 12 may include an indication mark 15. The second component 12 may include a first position for indicating that the fastening device 1 is normal and a second position for indicating that the fastening device 1 is loose. In the first position, the indication mark 15 of the second component 12 is located outside the indication window 14 of the first component 10 and is covered by the first component 10; in the second position, at least a portion of the indication mark 15 of the second component 12 is exposed in the indication window 14 of the first component 10.

[0043] When the fastening device 1 is fastened, the second component 12 can be held in the first position non-rotatably (for example, clamped in the first position non-rotatably directly or indirectly by the two clamping surfaces), so that the indicator mark 15 cannot be observed from the indicator window 14. When the fastening device 1 is loosened, since the fastening force of the fastening device 1 is reduced and thus the clamping force of the two clamping surfaces is reduced, the elastic force of the preloaded elastic element 13 can at least partially overcome the clamping force of the two clamping surfaces and drive the second component 12 to rotate relative to the first component 11. In this way, at least a portion of the indicator mark 15 of the second component 12 is rotated to a position exposed in the indicator window 14 (that is, the second component 12 is rotated to the second position), so that the inspector can observe at least a portion of the indicator mark 15 from the indicator window 14 and thus determine that the fastening device 1 has been loosened.

[0044] In one embodiment according to the present disclosure, the indicator mark 15 of the second component 12 and the indicator window 14 of the first component 11 may have substantially the same size and shape. Figure 1 and Figure 2 As shown, the indication window 14 of the first component 11 is configured to be fan-shaped, and the indication mark 15 of the second component 12 is also configured to be fan-shaped with a size substantially equal to that of the indication window 14. In this way, the amount of the indication mark 15 exposed in the indication window 14 can be used to indicate the degree of loosening of the fastening device 1. For example, when the fastening device 1 is slightly loose, the fastening force of the fastening device 1 and the clamping force of the two clamping surfaces are slightly reduced, and the elastic force of the preloaded elastic member 13 can only push a small part of the indication mark 15 of the second component 12 into the indication window 14 of the first component 11; when the fastening device 1 continues to loosen, the fastening force of the fastening device 1 and the clamping force of the two clamping surfaces continue to decrease, and the elastic force of the elastic member 13 can push a larger part of the indication mark 15 of the second component 12 into the indication window 14 of the first component 11. When the fastening device 1 is loosened to a certain extent, the fastening force of the fastening device 1 and the clamping force of the two clamping surfaces are reduced to a degree that can be completely overcome by the elastic force of the elastic member 13, so that the elastic member 13 can push the entire indication mark 15 of the second component 12 into the indication window 14 of the first component 11, which indicates that the fastening device 1 has been loosened to complete failure.

[0045] In the detection module 10 according to the present disclosure, by means of the preloaded elastic element 13, at least a portion of the indicator mark 15 of the second component 12 can be driven into the indicator window 14 of the first component 11 when the fastening device 1 is loose, thereby giving a direct indication that the fastening device 1 has been loosened. Therefore, the detection module 10 according to the present disclosure is a passive pure mechanical detection module, which does not require various expensive sensors or an external power supply. Compared with the detection module using sensors, the pure mechanical detection module according to the present disclosure is not only low-cost, but also has a wider range of applications.

[0046] like Figure 1 and Figure 2 As shown, in some embodiments according to the present disclosure, the indicator mark 15 of the second component 12 can be a colored portion of the second component 12. The color of the colored portion of the second component 12 is different from that of other portions of the second component 12 for distinction. The colored portion of the second component 12 can include any one or more suitable colors (e.g., red, yellow, blue, cyan, white, black, green, purple, etc.).

[0047] In some embodiments, the colored portion of the second component 12 may include a color that is easily observed by the naked eye (e.g., bright yellow, red, green, etc.). In this way, when the colored portion of the second component 12 (i.e., the indicator mark 15) is exposed in the indicator window 14, the inspector can observe the colored portion with the naked eye from a long distance without approaching the fastening device 1. This is particularly advantageous in some cases. For example, when the fastening device 1 is set at a very high position (e.g., at the top of a tunnel), the inspector needs to use auxiliary tools such as a ladder to approach the fastening device 1. By setting the colored portion of the second component 12 to include a color that is easily observed by the naked eye, the inspector can see the colored portion without approaching the fastening device 1 with the aid of an auxiliary tool, thereby making it easier to implement the inspection.

[0048] In some embodiments, the indicator mark 15 of the second mark 12 may be a pattern portion of the second mark 12. The pattern portion of the second part 12 has a different pattern from other parts of the second part 12 to distinguish it. The pattern portion of the second part 12 may include any one or more suitable patterns (e.g., patterns, mosaics, text, letters, arrows, etc.).

[0049] Continue to refer to Figure 1 and Figure 2In some embodiments according to the present disclosure, the second component 12 of the detection device 10 may include a pushing element 16. The pushing element 16 is used to push the second component 12 to the first position and preload the elastic element 13 at the same time. The pushing element 16 can be configured as a pushing handle. The pushing handle can be formed integrally with the second component 12 or formed separately. When the pushing handle is formed separately from the second component 12, the pushing handle can be mounted on the second component 12 in any appropriate manner (e.g., threaded connection, welding, interference fit, etc.).

[0050] The pushing element 16 may also have other different forms. For example, the pushing element 16 may be a protrusion, a recess, a friction portion with a rough surface, etc., provided on a surface (e.g., the upper surface) of the second component 12. The operator may push the second component 12 to the first position by touching these protrusions, recesses, and friction portions with a rough surface with a finger. In some embodiments, the pushing element 16 may be an opening provided on the second component 12. The operator may insert an external pushing member into the opening to push the second component 12 to push it to the first position.

[0051] When the second component 12 of the detection module 10 includes a pushing element 16, the pushing element 16 is preferably always exposed in the indication window 14 of the first component 11. In this way, the operator can touch the pushing element 16 via the indication window 14 to push the second component 12. However, the present disclosure is not limited to this, and the pushing element 16 can also be set at other accessible positions. For example, in the case where the outer periphery of the second component 12 can be approached, the pushing element 16 can be set at the outer periphery of the second component 12; or in the case where the size of the second component 12 is larger than the first component 11, the pushing element 16 can also be set at the portion of the second component 12 that exceeds the first component 11.

[0052] In some embodiments, the first component 11 can be configured as a circular gasket. The second component 12 can be configured as a rotatable disk (such as Figure 2 The second component 12 may be rotatably connected to the first component 11 via a connecting element. The connecting element may include a bearing, such as a ball bearing or a roller bearing. The first component 11 may include a flange protruding from its center to one side, and a connecting element such as a bearing may be mounted on the flange. In some embodiments, the flange of the first component 11 itself can be used as a connecting element, and the second component 12 can be directly rotatably connected to the first component 11 via the flange.

[0053] In some embodiments, the elastic element 13 may include a spring. The elastic element 13 configured as a spring may have various configurations and arrangements, such as Figure 2As shown, the elastic element 13 can be configured as a torsion spring arranged around the periphery of the second component 12, wherein one end of the torsion spring can be connected to the first component 11 and the other end thereof can be connected to the second component 12. In this way, when the second component 12 is rotated, the torsion spring can be preloaded with a predetermined elastic force. In another embodiment, the elastic element 13 can also be configured as a disc torsion spring arranged between the center of the second component and the periphery of the second component around the center of the second component, wherein one end of the disc torsion spring close to the center of the second component can be connected to a fixing member (e.g., connected to the first component or the fixing flange of the first component), and the other end can rotate with the rotation of the disc torsion spring to preload the disc torsion spring. In yet another embodiment, the elastic element 13 can be configured as two tension springs arranged diametrically and oppositely around the periphery of the second component 12, so that when the second component 12 is rotated, the two tension springs are stretched in opposite directions and preloaded with elastic force, and the elastic force can form a restoring moment. In yet another embodiment, the elastic element 13 may be configured as a torsion spring disposed between the first component 11 and the second component 12. In addition, the elastic element 13 may also have any other suitable configuration and arrangement.

[0054] In some embodiments, the fastening device 1 may include an elongated body extending axially. The detection module 10 according to the present disclosure may be mounted on the elongated body of the fastening device 1. To this end, the first component 11 of the detection module 10 may include a first hole for the elongated body of the fastening device 1 to extend through, and the second component 12 of the detection module 10 may include a second hole for the elongated body of the fastening device 1 to extend through. The first hole of the first component 11 and the second hole of the second component 12 may be arranged concentrically with each other.

[0055] Next, refer to Figures 3 to 6 , shows a detection module 20 according to another embodiment of the present disclosure and a fastening system 100 including the detection module 20 and a fastening device 30. In the fastening system 100, the fastening device 30 is configured as a stud, which includes a head 31 and an elongated body 32 extending from the head 31 toward one side. The fastening device 100 is used to fasten a load 40 in a mounting body (e.g., concrete) 50. In this embodiment, the detection module 20 can be sleeved on the elongated body 32 of the fastening device 30 and located between the lower surface of the head 31 of the fastening device 30 and the upper surface of the load 40.

[0056] Similar to the detection device 10, the detection device 20 may include a first component 22 having an indication window 21, a second component 24 having an indication mark 23, and an elastic element (not shown in the figure) for driving the second component 22 to rotate the second component relative to the first component 24. The indication window 21, the indication mark 23 and the elastic element of the detection device 20 may be respectively the same as the indication window 14, the indication mark 15 and the elastic element 13 of the detection device 10, and will not be described in detail here.

[0057] Different from the detection device 10, the first component 22 of the detection device 20 can be configured to include a front gasket 221 and a rear gasket 222. The indication window 21 can be arranged in the front gasket 221. The second component 24 is configured as a rotatable disk. The second component 24 can be rotatably connected to the front gasket 221 of the first component 22 and clamped between the front gasket 221 and the rear gasket 222.

[0058] Specifically, if Figure 4 As shown, the front gasket 221 of the first component 22 includes a recessed portion 223 and a flange 224 protruding from the center position of the front gasket 221 into the recessed portion 223. The second component 24 can be placed in the recessed portion 223 of the front gasket 221 of the first component 22. The bearing 25 can be sleeved on the flange 224 of the front gasket 221, and the bearing 25 can rotatably connect the second component 24 to the front gasket 221 when the second component 24 is placed in the recessed portion 223 of the front gasket 221. The rear gasket 222 can be placed under the second component 24, and when the fastening device 30 is fastened, it presses against the second component 24 to prevent the second component 24 from rotating and keep the second component 24 in the first position.

[0059] The pushing element 241 may be disposed on the second component 24. Figures 3 to 6 In the illustrated embodiment, the pushing element 241 is configured as a pushing handle integrally formed with the second component 24. When assembled into the detection module 20, the pushing handle can be located in the indication window 21 of the front gasket 221 to facilitate pushing by the operator.

[0060] In the detection module 20, since the rotatable second component 24 is completely encapsulated in the front gasket 221 and the rear gasket 222 of the first component 22, it can have a better ability to resist dust, moisture, or other harmful environmental influences and thus have a longer service life. In other embodiments according to the present disclosure, in order to better protect the rotatable second component 24, a cover component can also be provided for the indication window 21 of the first component 22 to completely encapsulate the second component 24 in the first component 22.

[0061] The above describes exemplary embodiments according to the present disclosure with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. All changes and modifications are included in the scope of protection of the present disclosure as defined by the claims. The present disclosure is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A detection module for detecting whether a fastening device is loose, characterized in that: The detection module is configured to be mounted to the fastening device and located between two clamping surfaces, the spacing between the two clamping surfaces being able to decrease when the fastening device is fastened and being able to increase when the fastening device is loosened, wherein the detection module comprises: a first component, wherein the first component includes an indicator window extending through at least a portion of the first component; a second component rotatable relative to the first component, wherein the second component includes an indicator mark; and an elastic element for driving the second component to rotate the second component relative to the first component; wherein the second component comprises a first position for indicating that the fastening device is normal and a second position for indicating that the fastening device is loose, in which the indicator mark is located outside the indicator window and is covered by the first component and the elastic element is preloaded, and in the second position, at least a portion of the indicator mark is exposed in the indicator window; and When the fastening device is fastened, the second component is held in the first position non-rotatably, and when the fastening device is loosened, the second component rotates to the second position under the elastic force of the preloaded elastic element.

2. The detection module according to claim 1, characterized in that: The indicator mark is a colored portion or a patterned portion of the second member.

3. The detection module according to claim 1, characterized in that: The second component further includes a pushing element for pushing the second component to the first position and preloading the elastic element at the same time.

4. The detection module according to claim 3, characterized in that: The pushing element is configured as a pushing handle, wherein the pushing handle is formed integrally with or separately from the second component.

5. The detection module according to claim 3, characterized in that: The pushing element is selected from at least one of: a protrusion, a depression, a friction portion having a rough surface, and an opening for receiving an external pushing member.

6. The detection module according to any one of claims 3 to 5, characterized in that: The push element can be accessed via the indicator window.

7. The detection module according to any one of claims 1 to 5, characterized in that: The indicator mark has substantially the same size and shape as the indicator window, and the amount of the indicator mark exposed in the indicator window is used to indicate the degree of loosening of the fastening device.

8. The detection module according to any one of claims 1 to 5, characterized in that: The first component is configured as a circular gasket, and the indicating window is in a sector shape.

9. The detection module according to any one of claims 1 to 5, characterized in that: The second component is configured as a rotatable disk.

10. The detection module according to claim 9, characterized in that: The elastic element is selected from at least one of the following: a torsion spring arranged around the periphery of the second component, a disc torsion spring arranged around the center of the second component and between the center of the second component and the periphery of the second component, two tension springs arranged diametrically and oppositely around the periphery of the second component, and a torsion spring arranged between the first component and the second component.

11. The detection module according to any one of claims 1 to 5, characterized in that: The second component is configured as a rotatable sector.

12. The detection module according to any one of claims 1 to 5, characterized in that: The second component is rotatably connected to the first component via a connecting element.

13. The detection module according to claim 12, characterized in that: The connecting element comprises a bearing.

14. The detection module according to any one of claims 1 to 5, characterized in that: The fastening device includes an elongated body extending axially, the first component includes a first hole for the elongated body to extend through, and the second component includes a second hole for the elongated body to extend through, so that the detection module can be mounted on the elongated body of the fastening device.

15. The detection module according to any one of claims 1 to 5, characterized in that: The second component is located below or inside the first component.

16. The detection module according to any one of claims 1 to 5, characterized in that: The first component includes a front gasket and a rear gasket, the front gasket includes a recessed portion for placing the second component, and the rear gasket can press the second component to prevent the second component from rotating when the fastening device is fastened.

17. The detection module according to claim 16, characterized in that: The front gasket includes a flange protruding from a central position thereof into the recessed portion, and a bearing is fitted on the flange to rotatably connect the second component to the front gasket.

18. The detection module according to claim 17, characterized in that: The indicator window is disposed on a front gasket of the first component.

19. A fastening system, characterized in that: The fastening system comprises a fastening device and a detection module according to any one of claims 1 to 18.

20. The fastening system of claim 19, wherein: The fastening device comprises a head and an elongated body extending from the head toward one side, and the detection module is sleeved on the elongated body and is located between the lower surface of the head and the upper surface of a load.

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