Alarm device and alarm method for bolt looseness of gangue selection robot

Abstract

The invention relates to the technical field of alarm equipment, in particular to a gangue selection robot bolt looseness alarm device and an alarm method thereof.The alarm device comprises an upper shell, a lower shell, a spring, a separation electrode, a contact copper sheet and an alarm lamp, and the upper shell penetrates through an expansion bolt and is located between a gangue selection robot and an expansion nut; the lower shell is in sliding connection with the upper shell, the spring is installed in the upper shell through the adjusting threaded column and used for adjusting the distance between the upper shell and the lower shell, the separation electrode is connected with the adjusting threaded column, the contact copper sheet is installed in the lower shell, one end of the alarm lamp is electrically connected with the separation electrode, and the other end of the alarm lamp is electrically connected with the contact copper sheet. And the other end of the alarm lamp is electrically connected with the contact copper sheet. When the expansion bolt is loosened, the alarm lamp can be turned on immediately to give an alarm immediately so as to prompt a person sitting together with the expansion bolt to shut down and maintain the expansion bolt in time without being limited by the working environment of the expansion bolt, and meanwhile, the situation of missing inspection or no inspection cannot occur.

Description

Technical Field

[0001] The present invention relates to the technical field of alarm equipment, and in particular to a bolt loosening alarm device for a gangue sorting robot and an alarm method thereof. Background Art

[0002] The working environment of the gangue sorting robot is the coal preparation workshop, at the rear end of the vibrating screen. Therefore, the entire working environment of the gangue sorting robot vibrates greatly. In addition, the robot's movement amplitude and frequency are relatively fast during operation. Therefore, during long-term use, the bolts of various parts will become loose. If the loosening of the bolts cannot be controlled in time, the entire equipment will overturn during movement, causing unpredictable accidents. For this reason, we need to provide a gangue sorting robot bolt loosening alarm device and an alarm method.

[0003] Currently, the method for detecting loose bolts is manual inspection, that is, observation by the naked eye. However, manual visual inspection may miss or fail to detect. In addition, due to the harsh on-site environment (for example, high dust content), it is impossible to detect whether the bolts are loose in time by visual inspection alone. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problem that the existing manual detection of bolt loosening is not timely and there are missed detections, the present invention provides a bolt loosening alarm device and an alarm method for a gangue sorting robot. By improving the bolt loosening detection method, an alarm is immediately issued when a bolt becomes loose.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a bolt loosening alarm device for a slag sorting robot, comprising: an upper shell, a lower shell, a spring, a separation electrode, a contact copper sheet and an alarm light, the upper shell passes through the expansion bolt, and the upper shell is located between the slag sorting robot and the expansion nut, the lower shell is slidably connected to the upper shell, the spring is installed inside the upper shell through an adjusting threaded column, the spring is used to adjust the distance between the upper shell and the lower shell, the separation electrode is connected to the adjusting threaded column, the contact copper sheet is installed inside the lower shell, one end of the alarm light is electrically connected to the separation electrode, and the other end of the alarm light is electrically connected to the contact copper sheet. When the alarm light goes out, the The expansion bolt is not loose. When the alarm light is on, the expansion bolt is loose. When the spring is in a compressed state, the lower end of the spring abuts against the lower shell, the lower end of the lower shell abuts against the workbench, the separation electrode contacts and is electrically connected to the contact copper sheet, the alarm light is in a short-circuit state, and the alarm light is off, indicating that the expansion bolt is not loose. When the spring can push the upper shell to move upward, it can drive the separation electrode to move upward. When the separation electrode is not in contact with the contact copper sheet, the alarm light is on and on. At this time, the power signal of the alarm light is an alarm signal that the expansion bolt is loose, indicating that the expansion bolt is loose.

[0006] Thus, the contact state between the separation electrode and the contact copper sheet is converted into the on and off state of the alarm light, and then the on and off state of the alarm light is used to judge whether the expansion bolt is loose. Compared with the existing manual detection method, this method has a simple structure and is easy to operate. When the expansion bolt is loose, the alarm light can light up immediately and an alarm will be sounded immediately to remind the passengers to stop the machine for maintenance in time. It is not restricted by the working environment of the expansion bolt, and at the same time, there will be no missed inspection or no inspection.

[0007] Furthermore, the upper shell is provided with an upper connecting post, the upper connecting post is electrically connected to the separation electrode, and the upper connecting post is electrically connected to one end of the alarm light, thereby facilitating the electrical connection between the separation electrode and the alarm light.

[0008] Furthermore, the lower shell is provided with a lower connecting post, the lower connecting post is electrically connected to the contact copper sheet, and the lower connecting post is electrically connected to the other end of the alarm light. Thus, the electrical connection between the contact copper sheet and the alarm light can be facilitated through the lower connecting post.

[0009] Furthermore, the device further comprises an electrode connecting post, the upper end of which is connected to the adjusting threaded post, and the lower end of which is connected to the upper end of the separation electrode; wherein the electrode connecting post is made of insulating material. Thus, the electrode connecting post serves as an intermediate transition section, rather than directly connecting the separation motor to the adjusting threaded post. Furthermore, the insulating material of the electrode connecting post reduces consumables and production costs. The use of insulating material in the electrode connecting post ensures that inspectors will not be exposed to the danger of electric shock when installing the entire alarm device, thereby improving the safety of the entire alarm device.

[0010] Furthermore, the upper shell is provided with a threaded hole, the adjusting threaded post passes through the threaded hole and is threadedly connected to the upper shell. Thus, the position of the spring can be adjusted by adjusting the threaded post to ensure that the spring can abut against the lower shell when the entire alarm device is in use.

[0011] Furthermore, a groove is formed at the upper end of the adjusting threaded column, so that when adjusting the position of the spring, the inspector can insert the adjusting tool into the groove to facilitate adjusting the position of the spring.

[0012] Furthermore, a plurality of alarm devices are provided, wherein the number of the alarm devices is equal to the number of the expansion bolts. Thus, it is possible to simultaneously detect whether a plurality of expansion bolts are loose, thereby improving the detection efficiency of the loose expansion bolts.

[0013] The device further comprises an indicator light, a power supply, and a resistor R. The indicator light, the plurality of warning lights, and the resistor R are connected in series, and the indicator light is electrically connected to the power supply. Thus, the on / off status of the indicator light can be used to determine whether there is a problem with the entire alarm device. If the indicator light is off, it indicates that the entire alarm device has failed and cannot detect whether the expansion bolt is loose.

[0014] Furthermore, the upper housing, the lower housing, the spring, and the adjusting threaded column are all made of insulating materials, thereby ensuring that the inspector will not be in danger of electric shock when installing the entire alarm device, thereby improving the safety performance of the entire alarm device.

[0015] An alarm method for a loose bolt alarm device of a gangue sorting robot comprises the following steps:

[0016] S1. Installing the upper and lower shells: Insert the upper shell into the expansion bolts, and make the lower end of the lower shell contact the workbench, and tighten the expansion nuts to install the upper and lower shells.

[0017] S2. Electrical connection of the separation electrode and the contact copper sheet: electrically connecting the separation electrode to one end of the alarm light, and electrically connecting the contact copper sheet to the other end of the alarm light;

[0018] S3. When the warning light is off, it indicates that the expansion bolt is not loose;

[0019] S4. When the warning light is in a lighting state, the power signal of the warning light is an alarm signal indicating that the expansion bolt is loose, indicating that the expansion bolt is loose.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The contact state between the separation electrode and the contact copper sheet is converted into the on and off state of the alarm light, and then the on and off state of the alarm light is used to judge whether the expansion bolt is loose. Compared with the existing manual detection method, this method has a simple structure and is easy to operate. When the expansion bolt is loose, the alarm light can light up immediately and an alarm will be sounded immediately to remind the passengers to stop the machine for maintenance in time. It is not restricted by the working environment of the expansion bolt, and at the same time, there will be no missed inspection or no inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and examples.

[0023] Figure 1 This is a structural diagram of a bolt loosening alarm device for a gangue sorting robot according to the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of the bolt loosening alarm device for a gangue sorting robot according to the present invention;

[0025] Figure 3 It is a structural schematic diagram of the upper shell of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the installation of the spring, adjusting threaded column, separation electrode and electrode connecting column of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the lower shell of the present invention;

[0028] Figure 6 This is a rendering of the installation effect of the bolt loosening alarm device of the gangue sorting robot of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the local structure at center A;

[0030] Figure 8 This is a circuit diagram of the bolt loosening alarm device of the gangue sorting robot of the present invention;

[0031] Figure 9 The present invention is a flowchart of the alarm method of the loose bolt alarm device of the gangue sorting robot.

[0032] In the figure: 1. Upper shell; 101. Upper connecting column; 102. Threaded hole; 2. Expansion bolt; 3. Gangue sorting robot; 4. Expansion nut; 5. Lower shell; 501. Lower connecting column; 6. Spring; 7. Adjusting threaded column; 701. Groove; 8. Separation electrode; 9. Contact copper sheet; 10. Alarm light; 11. Workbench; 12. Electrode connecting column; 13. Indicator light; 14. Power supply; 15. Resistor R; 100. Alarm device. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] like Figures 1 to 8As shown, a bolt loosening alarm device 100 for a slag sorting robot includes: an upper shell 1, a lower shell 5, a spring 6, a separation electrode 8, a contact copper sheet 9 and an alarm light 10. The upper shell 1 passes through the expansion bolt 2, and the upper shell 1 is located between the slag sorting robot 3 and the expansion nut 4. The lower shell 5 is slidably connected to the upper shell 1. The spring 6 is installed inside the upper shell 1 through the adjusting threaded column 7. The spring 6 is used to adjust the distance between the upper shell 1 and the lower shell 5. The separation electrode 8 is connected to the adjusting threaded column 7. The contact copper sheet 9 is installed inside the lower shell 5. One end of the alarm light 10 is electrically connected to the separation electrode 8, and the other end of the alarm light 10 is electrically connected to the contact copper sheet 9. When the alarm light 10 goes out, the expansion bolt 2 is not loose, when the alarm light 10 is on, the expansion bolt 2 is loose; wherein: when the spring 6 is in a compressed state, the lower end of the spring 6 abuts against the lower shell 5, the lower end of the lower shell 5 abuts against the workbench 11, the separation electrode 8 is in contact with the contact copper sheet 9 and is electrically connected, the alarm light 10 is in a short-circuit state, the alarm light 10 is in an off state, indicating that the expansion bolt 2 is not loose; when the spring 6 can push the upper shell 1 to move upward, it can drive the separation electrode 8 to move upward. When the separation electrode 8 is not in contact with the contact copper sheet 9, the alarm light 10 is in an on state, the alarm light 10 is in a lit state. At this time, the power signal of the alarm light 10 is an alarm signal that the expansion bolt 2 is loose, indicating that the expansion bolt 2 is loose. Thus, the contact state between the separation electrode 8 and the contact copper sheet 9 is converted into the on and off state of the alarm light 10, and then the on and off state of the alarm light 10 is used to judge whether the expansion bolt 2 is loose. Compared with the existing manual detection method, this method has a simple structure and is easy to operate. When the expansion bolt 2 is loose, the alarm light 10 can light up immediately and alarm immediately to remind the passengers to stop the machine for maintenance in time. It is not restricted by the working environment of the expansion bolt 2. At the same time, there will be no missed inspection or no inspection.

[0037] In other words, since the expansion bolt 2 becomes loose, the expansion nut 4 will become loose, and the upper shell 1 will no longer be squeezed by the slag sorting robot 3 and the expansion nut 4 (that is, the upper shell 1 is not constrained), and will vibrate with the vibration of the working environment. The alarm device of the present application can convert this loose state into a contact state between the separation electrode 8 and the contact copper sheet 9 (that is, when not loose, the separation electrode 8 is in contact with the contact copper sheet 9, and when loose, the separation electrode 8 is not in contact with the contact copper sheet 9), and then convert it into the on and off state of the alarm light 10. In this way, whether the expansion bolt 2 is loose can be judged by the on and off state of the alarm light 10.

[0038] In this embodiment, the upper housing 1 is provided with an upper connecting post 101, which is electrically connected to the separation electrode 8 and one end of the warning light 10. The lower housing 5 is provided with a lower connecting post 501, which is electrically connected to the contact copper sheet 9 and the other end of the warning light 10. Thus, the upper connecting post 101 facilitates the electrical connection between the separation electrode 8 and the warning light 10, and the lower connecting post 501 facilitates the electrical connection between the contact copper sheet 9 and the warning light 10.

[0039] Specifically, the separation electrode 8 and the upper connecting post 101 , the upper connecting post 101 and the warning light 10 , the contact copper sheet 9 and the lower connecting post 501 , and the lower connecting post 501 and the warning light 10 are all connected via wires.

[0040] In this embodiment, the device further includes an electrode connecting post 12, the upper end of which is connected to the adjusting threaded post 7, and the lower end of which is connected to the upper end of the separation electrode 8. Thus, the electrode connecting post 12 serves as an intermediate transition section, rather than directly connecting the separation motor to the adjusting threaded post 7. Furthermore, since the electrode connecting post 12 is made of insulating material, consumables (i.e., the consumables of the conductive material of the separation electrode 8) can be reduced, thereby lowering production costs.

[0041] In this embodiment, the upper housing 1 is provided with a threaded hole 102, through which an adjustment threaded post 7 passes and is threadedly connected to the upper housing 1. A groove 701 is provided at the upper end of the adjustment threaded post 7. Thus, the position of the spring 6 can be adjusted by adjusting the threaded post 7 to ensure that the spring 6 abuts against the lower housing 5 when the entire alarm device is in use. When adjusting the position of the spring 6, the inspector can insert an adjustment tool into the groove 701 to facilitate adjustment of the position of the spring 6.

[0042] In this embodiment, a plurality of alarm devices 100 are provided, wherein the number of alarm devices 100 is equal to the number of expansion bolts 2. Thus, it is possible to simultaneously detect whether a plurality of expansion bolts 2 are loose, thereby improving the detection efficiency of the loose expansion bolts 2.

[0043] Specifically, the number of alarm devices 100 is equal to the number of expansion bolts 2, which means that the number of mechanical structures of the alarm device 100 (i.e., the upper shell 1, the upper connecting column 101, the lower shell 5, the lower connecting column 501, the spring 6, the adjusting threaded column 7, the separation electrode 8, the contact copper sheet 9, the alarm light 10 and the electrode connecting column 12) is equal to the number of expansion bolts 2.

[0044] In this embodiment, the device further includes an indicator light 13, a power supply 14, and a resistor R15. The indicator light 13, the plurality of warning lights 10, and the resistor R15 are connected in series, and the indicator light 13 is electrically connected to the power supply 14. Thus, the on / off status of the indicator light 13 can be used to determine whether there is a problem with the entire alarm device. If the indicator light 13 is off, it indicates that the entire alarm device has failed (for example, the entire alarm device is not powered), and it is impossible to detect whether the expansion bolt 2 is loose.

[0045] Specifically, the number of mechanical mechanisms of the alarm device (i.e., the upper shell 1, the upper connecting column 101, the lower shell 5, the lower connecting column 501, the spring 6, the adjusting threaded column 7, the separation electrode 8, the contact copper sheet 9, the alarm light 10, and the electrode connecting column 12) is equal to the number of the expansion bolts 2. In this way, each expansion bolt 2 is equipped with a set of mechanical mechanisms to detect whether each expansion bolt 2 is loose. The circuit structure of the alarm device (i.e., the indicator light 13, the power supply 14, the resistor R15) is only provided with one, and multiple mechanical structures share one circuit structure. In this way, it is possible to determine whether each expansion bolt 2 is loose, reduce production costs (i.e., use one circuit structure to solve whether multiple expansion bolts 2 are loose), simplify the overall structure of the alarm device, and facilitate the installation of the entire alarm device.

[0046] In this embodiment, the upper housing 1, lower housing 5, spring 6, adjustment threaded post 7, and electrode connecting post 12 are all made of insulating materials. This ensures that the inspector will not be in danger of electric shock when installing the entire alarm device, thereby improving the safety performance of the entire alarm device.

[0047] For example, plastic is used as the insulating material.

[0048] like Figure 9 As shown, an alarm method for a loose bolt alarm device of a gangue sorting robot includes the following steps:

[0049] S1. Install the upper shell 1 and the lower shell 5: Insert the upper shell 1 into the expansion bolt 2, and make the lower end of the lower shell 5 abut against the workbench 11. Rotate and tighten the expansion nut 4 to install the upper shell 1 and the lower shell 5.

[0050] S2. Electrical connection of the separation electrode 8 and the contact copper sheet 9: electrically connect the separation electrode 8 to one end of the alarm light 10, and electrically connect the contact copper sheet 9 to the other end of the alarm light 10;

[0051] S3. When the warning light 10 is off, it indicates that the expansion bolt 2 is not loose;

[0052] S4. When the warning light 10 is in the lighting state, the electric quantity signal of the warning light 10 is an alarm signal indicating that the expansion bolt 2 is loose, indicating that the expansion bolt 2 is loose.

[0053] Specifically, before step S1, it is necessary to adjust the position of the spring 6 by adjusting the threaded column 7 to ensure that the spring 6 is in contact with the lower shell 5. In this way, it can be ensured that in the initial state (that is, after the entire alarm device is installed), the separation electrode 8 is in contact with the contact copper sheet 9; before step S3, it is necessary to determine whether the indicator light 13 is on. If the indicator light 13 is on, the entire alarm device has not failed, and it can detect whether the expansion bolt 2 is loose (that is, steps S3 and S4 can be executed). If the indicator light 13 is off, the entire alarm device has failed. At this time, the entire alarm device needs to be maintained until the indicator light 13 is on.

[0054] To sum up, the present invention converts the contact state between the separation electrode 8 and the contact copper sheet 9 into the on and off state of the alarm light 10, and then judges whether the expansion bolt 2 is loose by the on and off state of the alarm light 10. Compared with the existing manual detection method, this method has a simple structure and is easy to operate. When the expansion bolt 2 is loose, the alarm light 10 can light up immediately and alarm immediately to remind the passengers to stop the machine for maintenance in time. It is not restricted by the working environment of the expansion bolt 2. At the same time, there will be no missed inspection or no inspection.

[0055] The above description is intended to serve as a guide for the preferred embodiments of the present invention. Based on the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A bolt loosening alarm device for a gangue sorting robot, characterized in that: include: An upper shell (1), wherein the upper shell (1) passes through the expansion bolt (2), and the upper shell (1) is located between the gangue sorting robot (3) and the expansion nut (4); A lower shell (5), wherein the lower shell (5) is slidably connected to the upper shell (1); A spring (6), wherein the spring (6) is installed inside the upper housing (1) by adjusting a threaded column (7), and the spring (6) is used to adjust the distance between the upper housing (1) and the lower housing (5); A separation electrode (8), wherein the separation electrode (8) is connected to the adjustment threaded column (7); A contact copper sheet (9), the contact copper sheet (9) being mounted inside the lower housing (5); an alarm light (10), one end of the alarm light (10) being electrically connected to the separation electrode (8), and the other end of the alarm light (10) being electrically connected to the contact copper sheet (9); when the alarm light (10) is off, the expansion bolt (2) is not loose, and when the alarm light (10) is on, the expansion bolt (2) is loose; Wherein: when the spring (6) is in a compressed state, the lower end of the spring (6) abuts against the lower shell (5), the lower end of the lower shell (5) abuts against the workbench (11), the separation electrode (8) is in contact with the contact copper sheet (9) and is electrically connected, the warning light (10) is in a short-circuit state, and the warning light (10) is in an off state, indicating that the expansion bolt (2) is not loose; When the spring (6) is able to push the upper shell (1) to move upward, it can drive the separation electrode (8) to move upward. When the separation electrode (8) is not in contact with the contact copper sheet (9), the alarm light (10) is in an on state. The alarm light (10) is in a lit state. At this time, the electrical quantity signal of the alarm light (10) is an alarm signal indicating that the expansion bolt (2) is loose, indicating that the expansion bolt (2) is loose.

2. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: The upper shell (1) is provided with an upper connecting column (101), the upper connecting column (101) is electrically connected to the separation electrode (8), and the upper connecting column (101) is electrically connected to one end of the warning light (10).

3. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: The lower housing (5) is provided with a lower connecting column (501), the lower connecting column (501) is electrically connected to the contact copper sheet (9), and the lower connecting column (501) is electrically connected to the other end of the warning light (10).

4. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: Also includes: An electrode connecting column (12), wherein the upper end of the electrode connecting column (12) is connected to the adjusting threaded column (7), and the lower end of the electrode connecting column (12) is connected to the upper end of the separation electrode (8); Wherein: the electrode connecting column (12) is made of insulating material.

5. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: The upper shell (1) is provided with a threaded hole (102), and the adjusting threaded column (7) passes through the threaded hole (102) and is threadedly connected to the upper shell (1).

6. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: The upper end of the adjusting threaded column (7) is provided with a groove (701).

7. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: The alarm device (100) is provided with a plurality of; Wherein: the number of the alarm devices (100) is equal to the number of the expansion bolts (2).

8. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: Also includes: An indicator light (13), a power source (14) and a resistor R (15), wherein the indicator light (13), a plurality of warning lights (10) and the resistor R (15) are sequentially connected in series, the indicator light (13) is electrically connected to the power source (14), and the indicator light (13) is electrically connected to the power source (14).

9. The bolt loosening alarm device for gangue sorting robot according to claim 1 is characterized in that: The upper shell (1), the lower shell (5), the spring (6) and the adjusting threaded column (7) are all made of insulating materials.

10. An alarm method for the bolt loosening alarm device of a gangue sorting robot according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Installation of the upper shell (1) and the lower shell (5): insert the upper shell (1) into the expansion bolt (2), and make the lower end of the lower shell (5) abut against the workbench (11), and rotate and tighten the expansion nut (4) to install the upper shell (1) and the lower shell (5); S2, electrical connection of the separation electrode (8) and the contact copper sheet (9): electrically connecting the separation electrode (8) to one end of the alarm light (10), and electrically connecting the contact copper sheet (9) to the other end of the alarm light (10); S3. When the warning light (10) is off, it indicates that the expansion bolt (2) is not loose; S4. When the warning light (10) is in a lighting state, the electric quantity signal of the warning light (10) is an alarm signal indicating that the expansion bolt (2) is loose, indicating that the expansion bolt (2) is loose.

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