Flexible double-power-grid sensing device for foreign matter invasion monitoring

Abstract

The utility model provides a flexible dual power grid sensing device used for foreign matter invasion monitoring, the flexible dual power grid sensing device comprises a flexible fiber net, net sheet pressing plates, a support rod installation member I, a support rod installation member II and a monitoring cable, the flexible fiber net is arranged between two groups of net sheet pressing plates, and each group of net sheet pressing plates comprises two pressing plates; each of the supporting rod mounting part I and the supporting rod mounting part II comprises a plurality of hollow structural parts which are arranged at intervals; the supporting rod mounting piece I is arranged on the outer side of one group of the sheet pressing plates, and the supporting rod mounting piece II is arranged on the outer side of the other group of the sheet pressing plates; the monitoring cable is arranged on the flexible fiber net, and the end part of the monitoring cable extends out of the flexible fiber net. The device is convenient to carry, is easy to install, is easy to wire, can achieve the foreign matter invasion monitoring function, and can solve the problems that an existing dual-power-grid sensing device is difficult to install and cannot be quickly recovered after a large-area destructive fault occurs.

Description

Technical Field

[0001] The utility model relates to the technical field of foreign body intrusion monitoring, in particular to a flexible dual-grid sensing device for foreign body intrusion monitoring. Background Art

[0002] The High-Speed ​​Railway Natural Disaster and Foreign Object Intrusion Monitoring System (hereinafter referred to as the Disaster Monitoring System), formerly the Disaster Prevention and Safety Monitoring System, is a crucial component of the railway information system. It monitors wind, rain, snow, and foreign object intrusion along high-speed railway lines, as well as overpasses on railway roads and bridges. It serves as a technical support and essential infrastructure for ensuring the safe and efficient operation of high-speed trains. The foreign object intrusion monitoring equipment for overpasses on railway roads and bridges can detect vehicles and large cargo that cross guardrails and nets and intrude into high-speed railway clearances. Controlling the train control system through relay circuits within the base station monitoring unit, if foreign object intrusion causes the dual-grid sensors to disconnect, the disaster monitoring system sends a foreign object intrusion alarm to the train control interlocking system, automatically stopping any train entering the relevant blocking section and thus protecting the train. Therefore, foreign object intrusion monitoring equipment is a crucial component for ensuring the safe operation of trains.

[0003] It should be noted that the existing foreign object intrusion monitoring equipment mainly adopts contact monitoring, such as the Chinese patent application number 201120459585.5, which discloses a railway disaster prevention system foreign object intrusion monitoring device, in which the dual-grid conductors are wrapped in a rod-shaped structure frame. After the foreign object damages the rod-shaped structure frame, the dual-grid conductors are short-circuited; in actual testing, a large number of composite material rod-shaped structure frames need to be installed and each rod-shaped structure frame requires a set of embedded bolts and a vertical bracket during installation. These rod-shaped structure frames are not convenient to transport, and once the rod-shaped structure frame is knocked down on a large scale, the embedded bolts and the vertical bracket will be damaged at the same time. It is difficult to restore the monitoring device to a state where it can normally monitor foreign object intrusion in a short period of time.

[0004] For example, Chinese patent application number 201420691418.7 discloses a lightweight grid-type dual-grid sensor device. This device utilizes a brittle, easily fractured grid density. When a landslide or rockfall occurs, the impact of the rocks damages the dual-grid, causing the mesh to fracture, disrupting the internal circuit and triggering an alarm indicating a dual-grid circuit interruption. However, due to the mesh's fragility, this dual-grid sensor device is suitable for detecting intrusion by small objects, but not for detecting intrusion by large vehicles or cargo, as is required on railway and road bridges.

[0005] It's also worth noting that existing foreign object intrusion monitoring equipment typically requires pre-embedded bolts to secure vertical brackets to the bridge during installation. Each dual-grid sensor requires vertical brackets on both sides for installation on a highway bridge. However, this installation method requires a large number of pre-embedded bolts and vertical brackets. Furthermore, when large vehicles or cargo break through the dual-grid sensor and intrude on the railway boundary, they can cause significant damage to the pre-embedded bolts, vertical brackets, and dual-grid sensors. The subsequent reinstallation of these numerous pre-embedded bolts and vertical brackets is time-consuming and labor-intensive.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the Invention

[0007] The purpose of the utility model is to address the deficiencies of the existing technology and thus provide a flexible dual-grid sensing device for foreign object intrusion monitoring.

[0008] In order to achieve the above-mentioned object, the utility model provides a flexible dual-grid sensing device for foreign body intrusion monitoring, the flexible dual-grid sensing device comprising a flexible fiber mesh, a mesh pressure plate, a support rod mounting member I, a support rod mounting member II and a monitoring cable, the flexible fiber mesh being arranged between two groups of mesh pressure plates, each group of mesh pressure plates comprising two pressure plates;

[0009] The support rod mounting member I and the support rod mounting member II each include a plurality of hollow structural members arranged at intervals, and the layout positions of the hollow structural members of the support rod mounting member I are different from the layout positions of the hollow structural members of the support rod mounting member II;

[0010] The support rod mounting member I is arranged on the outside of one set of mesh pressing plates, and the support rod mounting member II is arranged on the outside of the other set of mesh pressing plates;

[0011] The monitoring cable is arranged on the flexible fiber net, and the end of the monitoring cable extends to the outside of the flexible fiber net;

[0012] A transverse mounting piece and a transverse connecting piece are respectively provided on the upper and lower sides of the flexible fiber web, and the transverse connecting piece is provided through the transverse mounting piece.

[0013] The beneficial effects of the utility model are:

[0014] 1) This utility model proposes a flexible dual-grid sensing device for foreign object intrusion monitoring, which is easy to carry, easy to install, easy to wire, and can meet the foreign object intrusion monitoring function;

[0015] 2) The flexible dual-grid sensor device for foreign object intrusion monitoring can also solve the problems of difficult installation of existing dual-grid sensor devices and the inability to quickly recover after large-scale destructive failures. It can temporarily or permanently replace damaged composite material dual-grid sensors to achieve the purpose of quickly recovering foreign object intrusion monitoring, improve driving efficiency, and reduce the impact of foreign object intrusion monitoring equipment failures on driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a single flexible dual-grid sensing device of the utility model. Figure 1 (front view);

[0017] Figure 2 This is a schematic diagram of the structure of a single flexible dual-grid sensing device of the utility model. Figure 2 (Top view);

[0018] Figure 3 This is a schematic diagram of the assembly structure of two flexible dual-grid sensing devices in one embodiment of the utility model. Figure 1 (stereoscopic image);

[0019] Figure 4 This is a schematic diagram of the assembly structure of two flexible dual-grid sensing devices in one embodiment of the utility model. Figure 2 (Top view);

[0020] Figure 5 This is a schematic diagram of the assembly structure of six flexible dual-grid sensing devices in an embodiment of the utility model. Figure 1 (front view);

[0021] Figure 6 This is a schematic diagram of the assembly structure of six flexible dual-grid sensing devices in another embodiment of the utility model. Figure 2 (stereoscopic image);

[0022] Figure 7 This is a schematic diagram of the assembly structure of six flexible dual-grid sensing devices in another embodiment of the utility model. Figure 3 (Side view);

[0023] In the figure: 1. Flexible fiber mesh; 2. Monitoring cable; 3. Threading and fixing hole; 4. Bushing; 5. Pressure plate; 6. Rivet; 7. Horizontal mounting piece; 8. Horizontal connecting piece; 9. Right-angle fixing piece; 10. Base; 11. Left column; 12. U-shaped fastener; 13. Vertical support rod; 14. Right column. DETAILED DESCRIPTION

[0024] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0025] The terms "I," "II," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate. This is merely a way of distinguishing objects with the same attributes in the embodiments of this application.

[0026] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and 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 a limitation on the present invention.

[0027] Example 1

[0028] As attached Figure 1 and attached Figure 2 As shown, this embodiment provides a specific implementation of a flexible dual-grid sensing device for foreign object intrusion monitoring;

[0029] The flexible dual-grid sensing device includes a flexible fiber mesh 1, a mesh pressure plate, a support rod mounting member I, a support rod mounting member II, and a monitoring cable 2. The flexible fiber mesh 1 is arranged between two groups of mesh pressure plates, and each group of mesh pressure plates includes two pressure plates 5.

[0030] The support rod mounting member I and the support rod mounting member II each include a plurality of hollow structural members arranged at intervals, and the layout positions of the hollow structural members of the support rod mounting member I are different from the layout positions of the hollow structural members of the support rod mounting member II;

[0031] The support rod mounting member I is arranged on the outside of one set of mesh pressing plates, and the support rod mounting member II is arranged on the outside of the other set of mesh pressing plates;

[0032] The monitoring cable 2 is arranged on the flexible fiber net 1, and the end of the monitoring cable 2 extends to the outside of the flexible fiber net 1;

[0033] A transverse mounting member 7 and a transverse connecting member 8 are respectively provided on the upper and lower sides of the flexible fiber web 1 , and the transverse connecting member 8 is provided through the transverse mounting member 7 .

[0034] It should be noted that the attached Figure 1 and attached Figure 2The dual-grid sensor device shown is a single flexible dual-grid sensor device. Since the single flexible dual-grid sensor device adopts the flexible fiber net 1, the single flexible dual-grid sensor device has high toughness and is not easy to break. During transportation, it can be rolled up for easy carrying.

[0035] It should also be noted that since the support rod mounting member I and the support rod mounting member II of the single flexible dual-grid sensing device are arranged on both sides of the flexible fiber mesh 1, the transverse mounting member 7 is arranged on the upper and lower sides of the flexible fiber mesh 1; during installation, the two vertical support rods 13 respectively pass through the two support rod mounting members to form a vertical support for the flexible fiber mesh 1, and the transverse connecting member 8 passes through several transverse mounting members 7 to form a transverse positioning for the flexible fiber mesh 1, which is easy to install and can effectively prevent the flexible fiber mesh 1 from swinging with the wind.

[0036] It should also be noted that monitoring cable 2 is the internal cable for monitoring the power grid. Specifically, it consists of two intertwined red and black wires, which provide dual redundancy. Before the flexible dual-grid sensor device leaves the factory, production personnel pre-buried the red and black wires according to the wiring rules for dual-grid sensors. To facilitate quick wiring in various situations, the end of monitoring cable 2 extends beyond the flexible fiber mesh 1 (e.g., leaving a 0.5-meter length), facilitating connection to the monitoring cables 2 of adjacent flexible dual-grid sensor devices.

[0037] When large vehicles, large cargoes, etc. impact and damage the flexible fiber net 1, the flexible fiber net 1 breaks, which in turn causes the monitoring cable 2 to be disconnected, triggering an alarm for the dual-grid circuit interruption. Therefore, the flexible dual-grid sensing device has a foreign object intrusion monitoring function.

[0038] It should also be noted that if there is large-scale damage, the entire system can be quickly replaced by replacing a single flexible dual-grid sensor device.

[0039] It should also be noted that the hollow structural members of the support rod mounting member I are arranged relative to the hollow structural members of the support rod mounting member II to achieve the rapid connection of multiple nets;

[0040] In a specific embodiment, the support rod mounting member I is located on the left side of the flexible fiber web 1, and the support rod mounting member II is located on the right side of the flexible fiber web 1; the support rod mounting member I includes 10 hollow structural members, and the support rod mounting member II includes 11 hollow structural members, as shown in the attached figure. Figure 1 As shown;

[0041] According to the order from top to bottom, the first hollow structure member in the support rod mounting member II is located above the first hollow structure member in the support rod mounting member I, and the second hollow structure member in the support rod mounting member I is located below the first hollow structure member in the support rod mounting member II. Figure 1Arrange in the position shown;

[0042] The 10 hollow structural members of the support rod mounting member I are arranged at intervals, and the 11 hollow structural members of the support rod mounting member II are also arranged at intervals; the intervals between the 10 hollow structural members of the support rod mounting member I match the lengths of the hollow structural members at corresponding positions of the support rod mounting member II.

[0043] It should also be noted that each flexible dual-grid sensing device includes two groups of mesh pressure plates, and each group of mesh pressure plates includes two pressure plates 5; Figure 2 As shown, the two pressing plates 5 of each group of mesh pressing plates are arranged on both sides of the flexible fiber mesh 1, and the two pressing plates 5 are fastened together by rivets 6.

[0044] In some embodiments, as shown in the attached Figure 1 As shown, the monitoring cables 2 are deployed on the flexible fiber mesh 1 in a vertical cross manner, which can improve space utilization and make the cable layout more compact.

[0045] In some embodiments, the hollow structural member is a sleeve 4, which is cylindrical and hollow inside to facilitate the vertical support rod 13 to pass through;

[0046] In other embodiments, the hollow structural member may also be other parts with a hollow interior, such as a composite hollow shaft or a nylon hollow shaft (with a through hole formed in the center of the shaft body to facilitate the vertical support rod 13 to pass through).

[0047] In some embodiments, the transverse connecting member 8 is a connecting rope, which can be rolled up for easy carrying; the connecting rope can be made of high-strength cables such as nylon rope, polyester rope, and polypropylene rope.

[0048] It should be noted that the transverse mounting member 7 of the flexible fiber mesh 1 is provided with threading and fixing holes 3 , and the flexible fiber mesh 1 is reinforced and fixed in the transverse direction by using high-strength cables and right-angle fixing members 9 .

[0049] In other embodiments, the transverse connecting member 8 may also be a transverse support rod. The transverse support rod may be made of aluminum alloy, carbon fiber, etc., and has the characteristics of high toughness and light weight.

[0050] In some embodiments, existing weaving technology is used to weave a 2m*1m flexible material plane as a high-strength flexible fiber mesh 1, and the material of the flexible fiber mesh 1 can be polyester, polyethylene, etc.

[0051] In some embodiments, the flexible dual-grid sensing device for foreign object intrusion monitoring further includes a plurality of vertical support rods 13 , and the outer diameter of the vertical support rods 13 matches the inner diameter of the hollow structural member.

[0052] Example 2

[0053] Based on Example 1, this example provides another specific implementation of a flexible dual-grid sensing device for foreign object intrusion monitoring, as shown in the attached figure. Figure 3 and attached Figure 4 As shown;

[0054] The difference between this embodiment and embodiment 1 is that the dual-grid sensing device in embodiment 1 is a single flexible dual-grid sensing device, while the dual-grid sensing device in this embodiment is a combined flexible dual-grid sensing device.

[0055] In some embodiments, a plurality of flexible dual-grid sensing devices are arranged adjacent to each other, and the monitoring cables 2 in two adjacent flexible dual-grid sensing devices are connected in series, as shown in FIG. Figure 3 shown.

[0056] Attachment Figure 3 In the dual-grid sensing device shown, two flexible dual-grid sensing devices are arranged adjacent to each other vertically. In actual applications, flexible dual-grid sensing devices of various heights can be arbitrarily composed horizontally and vertically according to needs.

[0057] For example, if a two-meter composite material dual-grid sensor device fails, the replacement solution is:

[0058] Two flexible dual-grid sensing devices can be used for replacement, and the flexible dual-grid sensing device can be fixed to the fault location, and the end of the monitoring cable 2 can be connected to quickly restore the entire foreign object intrusion monitoring device.

[0059] In some embodiments, the flexible dual-grid sensing device for foreign object intrusion monitoring further includes a plurality of vertical support rods 13 , and the outer diameter of the vertical support rods 13 matches the inner diameter of the hollow structural member.

[0060] It should be noted that when two flexible dual-grid sensor devices are arranged adjacent to each other, the hollow structural members of the support rod mounting members I of the two flexible dual-grid sensor devices are in the same vertical direction, and a vertical support rod 13 is used to pass through the support rod mounting members I of the two flexible dual-grid sensor devices ( Figure 3 (not shown) to form a support for the flexible dual-grid sensing device on this side;

[0061] The hollow structural members of the support rod mounting members II of the two flexible dual-grid sensing devices are also in the same vertical direction, and another vertical support rod 13 is used to penetrate the support rod mounting members II of the two flexible dual-grid sensing devices ( Figure 3 (not shown) to form support for the flexible dual-grid sensing device on the other side.

[0062] In some embodiments, the flexible dual-grid sensing device for foreign object intrusion monitoring further includes two columns, the bottoms of which are fixed on corresponding bases 10;

[0063] One of the columns is arranged on the side of the leftmost flexible dual-grid sensing device, and the other column is arranged on the side of the rightmost flexible dual-grid sensing device;

[0064] The two columns are also fastened to the mesh pressure plates of the corresponding flexible dual-grid sensing devices through U-shaped fasteners 12 and right-angle fasteners 9 respectively.

[0065] It should be noted that, as Figure 3 and 4 As shown, the left column 11 of the two columns is located on the left side of the entire flexible dual-grid sensing device, and the right column 14 is located on the right side of the entire flexible dual-grid sensing device; the bottom of the column is fixed on the corresponding base 10, and the base 10 can be fixed at a designated installation position, thereby fixing the entire flexible dual-grid sensing device on the highway bridge.

[0066] It should also be noted that the Figure 3 and 4 As shown, the two columns are located on the rear side of the flexible fiber mesh 1, and the U-shaped fasteners 12 surround the columns and the flexible fiber mesh 1 together. The two ends of the U-shaped fasteners 12 are provided with external threads, and then fixed with right-angle fixings 9 and nuts; in order to ensure stability, U-shaped fasteners 12 and right-angle fixings 9 can be arranged at the four corners of the flexible fiber mesh 1.

[0067] It should also be noted that during assembly, the connecting rope can also be passed through the threading and fixing hole 3 reserved in the horizontal mounting member 7, and the end of the connecting rope can be tied to the right-angle fixing member 9 ( Figure 3 ), thereby enhancing the strength in the horizontal direction.

[0068] Example 3

[0069] Based on Example 1 and Example 2, this embodiment provides another specific implementation of a flexible dual-grid sensing device for foreign object intrusion monitoring, as shown in the attached Figure 5 To the attached Figure 7 As shown;

[0070] The difference between this embodiment and the above embodiments is that the dual-grid sensing device in Embodiment 1 is a single flexible dual-grid sensing device, while the dual-grid sensing device in this embodiment is a combined flexible dual-grid sensing device, including left and right adjacent flexible dual-grid sensing devices.

[0071] In some embodiments, a plurality of flexible dual-grid sensing devices are arranged adjacent to each other on the left and right sides;

[0072] In the two adjacent flexible dual-grid sensing devices on the left and right, the support rod mounting member I of one flexible dual-grid sensing device is engaged with the support rod mounting member II of the other flexible dual-grid sensing device.

[0073] It should be noted that the flexible dual-grid sensing device for foreign body intrusion monitoring can be assembled and replaced by using the flexible dual-grid horizontal deployment method. Figure 5 The combined flexible dual-grid sensing device shown is replaced on a large scale, thereby quickly restoring the foreign object intrusion monitoring equipment to a normal monitoring state.

[0074] In some embodiments, the flexible dual-grid sensing device for foreign object intrusion monitoring further includes a plurality of vertical support rods 13 , and the outer diameter of the vertical support rods 13 matches the inner diameter of the hollow structural member.

[0075] In a specific embodiment, as shown in the attached Figure 5 To the attached Figure 7 The six-meter combined flexible dual-grid sensing device shown includes flexible dual-grid sensing devices adjacent to each other on the left and right and flexible dual-grid sensing devices adjacent to each other on the top and bottom;

[0076] Since the interval between the two adjacent hollow structural members of the support rod mounting member I matches the length of the hollow structural member at the corresponding position of the support rod mounting member II; therefore, the two flexible dual-grid sensing devices can be assembled together through the support rod mounting member II of the left flexible dual-grid sensing device and the support rod mounting member I of the right flexible dual-grid sensing device. After assembly, the hollow structural members of the support rod mounting member II of the left flexible dual-grid sensing device are exactly located in the interval between the hollow structural members of the support rod mounting member I of the right flexible dual-grid sensing device, and the vertical support rod 13 can be placed in the support rod mounting member II of the left flexible dual-grid sensing device and the support rod mounting member I of the right flexible dual-grid sensing device, so that the left and right adjacent flexible dual-grid sensing devices are assembled together;

[0077] As attached Figure 5 To the attached Figure 7 The six-meter combined flexible dual-grid sensing device shown includes three flexible dual-grid sensing devices arranged horizontally. In order to enhance the stability in the horizontal direction, the connecting rope can also be passed through the threading and fixing holes 3 on each horizontal mounting member 7, and the end of the connecting rope can be tied to the right-angle fixing member 9 for fixation.

[0078] In some embodiments, the flexible dual-grid sensing device for foreign object intrusion monitoring further includes two columns, the bottoms of which are fixed on corresponding bases 10;

[0079] One of the columns is arranged on the side of the leftmost flexible dual-grid sensing device, and the other column is arranged on the side of the rightmost flexible dual-grid sensing device;

[0080] The two columns are also fastened to the mesh pressure plates of the corresponding flexible dual-grid sensing devices through U-shaped fasteners 12 and right-angle fasteners 9 respectively.

[0081] It should be noted that, as Figures 5 to 7 As shown, the left column 11 of the two columns is located at the leftmost side of the entire flexible dual-grid sensing device, and the right column 14 is located at the rightmost side of the entire flexible dual-grid sensing device; the bottom of the column is fixed on the corresponding base 10, and the base 10 can be fixed at a designated installation position, thereby fixing the entire flexible dual-grid sensing device on the highway bridge.

[0082] In order to ensure stability, U-shaped fasteners 12 and right-angle fixings 9 can be arranged at the four corners of the flexible fiber mesh 1. The U-shaped fasteners 12 surround the column and the flexible fiber mesh 1 together. The U-shaped fasteners 12 with external threads at the end cooperate with the right-angle fixings 9 and nuts to fix the entire flexible dual-grid sensing device.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for protection of the utility model.

Claims

1. A flexible dual-grid sensing device for foreign object intrusion monitoring, characterized by: The flexible dual-grid sensing device includes a flexible fiber mesh, a mesh pressure plate, a support rod mounting member I, a support rod mounting member II, and a monitoring cable. The flexible fiber mesh is arranged between two groups of mesh pressure plates, and each group of mesh pressure plates includes two pressure plates. The support rod mounting member I and the support rod mounting member II each include a plurality of hollow structural members arranged at intervals, and the layout positions of the hollow structural members of the support rod mounting member I are different from the layout positions of the hollow structural members of the support rod mounting member II; The support rod mounting member I is arranged on the outside of one set of mesh pressing plates, and the support rod mounting member II is arranged on the outside of the other set of mesh pressing plates; The monitoring cable is arranged on the flexible fiber net, and the end of the monitoring cable extends to the outside of the flexible fiber net; A transverse mounting piece and a transverse connecting piece are respectively provided on the upper and lower sides of the flexible fiber web, and the transverse connecting piece is provided through the transverse mounting piece.

2. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 1 is characterized in that: The monitoring cables are arranged on the flexible fiber net in a vertically cross manner.

3. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 1 or 2, characterized in that: A plurality of flexible dual-grid sensing devices are arranged adjacent to each other, and the monitoring cables in two adjacent flexible dual-grid sensing devices are connected in series.

4. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 3 is characterized in that: Several flexible dual-grid sensing devices are arranged adjacent to each other on the left and right; In the two adjacent flexible dual-grid sensing devices on the left and right, the support rod mounting member I of one flexible dual-grid sensing device is engaged with the support rod mounting member II of the other flexible dual-grid sensing device.

5. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 4 is characterized in that: It also includes a plurality of vertical support rods, the outer diameter of the vertical support rods matches the inner diameter of the hollow structural member.

6. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 5, characterized in that: It also includes two columns, the bottoms of which are fixed on corresponding bases; One of the columns is arranged on the side of the leftmost flexible dual-grid sensing device, and the other column is arranged on the side of the rightmost flexible dual-grid sensing device; The two columns are also fastened to the mesh pressure plates of the corresponding flexible dual-grid sensing devices through U-shaped fasteners and right-angle fasteners respectively.

7. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 1 is characterized in that: The hollow structural member is a shaft sleeve.

8. The flexible dual-grid sensing device for foreign object intrusion monitoring according to claim 1 is characterized in that: The transverse connecting member is a connecting rope.

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