A fiber-optic composite sensing device for concrete retaining wall prestressed cables

Abstract

The utility model discloses a kind of optical fiber composite sensing devices for concrete retaining wall prestressed anchor cable, including anchor cable and the sensor body of being located in the one side of anchor cable, composite protection mechanism is equipped in the outside cover of the sensor body, the composite protection mechanism includes two protective frames and drive assembly, two the protective frame is respectively located in the upper and lower sides of the outside of the sensor body and all with the sensor body detachably connected, the drive assembly connects two the protective frame;The optical fiber composite sensing device for concrete retaining wall prestressed anchor cable, when drive assembly operates, two protective frames can be simultaneously driven to move towards each other, when two protective frames butt joint sensor body, then effectively shielded on the outside of sensor body can be protected, when two protective frames move away simultaneously, then it is convenient to carry out dismounting maintenance operation, only need to be completed to the protection and installation dismounting of sensor body by operating drive assembly, practicality and convenience are all better.

Description

Technical Field

[0001] This utility model belongs to the technical field of fiber optic composite sensing devices, and in particular, it is a fiber optic composite sensing device for prestressed anchor cables of concrete retaining walls. Background Technology

[0002] Concrete retaining walls are support structures primarily constructed of concrete, used to resist horizontal pressure from the soil along railway lines and maintain soil stability. They are also reinforced with prestressed anchor cables to form anchor bodies, enhancing the wall's load-bearing capacity. Fiber optic composite sensing devices are installed at the anchor cables to monitor their condition and prevent damage from going unaddressed. However, most fiber optic composite sensing devices currently used along railway lines for prestressed anchor cables in concrete retaining walls lack adequate protection for the sensor bodies themselves, failing to adequately meet the requirements for protection and ease of installation and removal, thus presenting certain limitations. Utility Model Content

[0003] Purpose of the utility model: To provide a fiber optic composite sensing device for prestressed anchor cables of concrete retaining walls, in order to solve the problem that most existing fiber optic composite sensing devices used along railway lines for prestressed anchor cables of concrete retaining walls are inadequate in terms of installation and protection of the sensor body, and cannot adequately meet the requirements of protection and convenient disassembly and assembly, thus having certain limitations.

[0004] Technical solution:

[0005] A fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls includes an anchor cable and a sensor body disposed on one side of the anchor cable. A composite protective mechanism is provided on the outside of the sensor body. The composite protective mechanism includes two protective frames and a driving assembly. The two protective frames are respectively located on the upper and lower sides of the outside of the sensor body and are detachably connected to the sensor body. The driving assembly is connected to the two protective frames and is used to simultaneously drive the two protective frames to move towards each other. The driving assembly is disposed on a base, which is located below the sensor body.

[0006] In a further embodiment, the protective frame is detachably connected to the sensor body via a docking assembly. The docking assembly is disposed on the groove wall of the slot, and the slot is opened at the end of the protective frame and engages with the end of the sensor body.

[0007] The docking assembly includes a docking block fixed on the inner wall of the slot, the docking block being inserted into the docking groove, and the docking groove being formed at the end of the sensor;

[0008] The surface of the protective frame is provided with a mesh area.

[0009] In a further embodiment, the driving assembly includes a driving rod and two threaded movable seats sleeved on the driving rod. The driving rod is located on one side of the sensor body. The driving rod is provided with two threaded areas, and each threaded area is threadedly connected to one of the threaded movable seats. The two threaded movable seats are respectively fixedly connected to one end of the two protective frames.

[0010] The bottom of the drive rod is inserted through the base and rotatably connected to the base, and a top block is fixed to the top of the drive rod.

[0011] In a further embodiment, there are two drive rods, with the other drive rod located at the other end of the protective frame, and the two drive rods located on the diagonal of the protective frame;

[0012] The two drive rods are connected by a transmission assembly located in the base. The transmission assembly includes a transmission chain and two sprockets that mesh with the transmission chain. The two sprockets are respectively mounted on the rods of the two drive rods located in the base. This ensures driving efficiency while improving the stability of the protective frame.

[0013] In a further embodiment, a limiting screw is also provided on the base. The limiting screw passes through the base and is threadedly engaged. The limiting screw is inserted into a limiting hole, which is formed on the rod of the drive rod located inside the base.

[0014] In a further embodiment, two protective components are provided on the outside of the drive rod. The protective components include telescopic tubes, which are sleeved on the drive rod to protect the threaded area. One end of each telescopic tube is rotatably connected to a threaded movable seat through a sliding member, and the other end of each telescopic tube is fixedly connected to the rod body of the drive rod near the base and the top block, respectively.

[0015] The sliding element includes a slider installed at the end of the telescopic tube, the slider sliding in an annular groove, the groove being formed on the threaded movement; this can prevent the thread from being damaged by external environmental influences.

[0016] In a further embodiment, two sliding rods are also provided on the base. The two sliding rods are respectively parallel to one side of the two drive rods. The bottom of the sliding rod is fixed to the base, and a sliding sleeve is slidably sleeved on the sliding rod. The sliding sleeve is fixed to the end of the protective frame.

[0017] The sliding range and direction of the sliding sleeve are consistent with the moving range and direction of the threaded moving seat; this can better ensure the stability of the protective frame during protection and movement.

[0018] The beneficial effects of this utility model are as follows: By setting two protective frames on the upper and lower sides of the sensor body, and the two protective frames are also connected to the drive component, when the drive component is running, it can drive the two protective frames to move towards each other at the same time. When the two protective frames are in contact with the sensor body, they can effectively protect and block the outside of the sensor body. When the two protective frames move away from each other at the same time, it is convenient to disassemble and maintain the sensor body. The protection and installation and disassembly of the sensor body can be completed by operating the drive component. It has good practicality and convenience. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the structure of this utility model.

[0020] Figure 2 This is the utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0021] Figure 3 This is a schematic diagram of the side structure of the protective frame of this utility model.

[0022] Figure 4 This is a top sectional view of the base structure of this utility model.

[0023] The attached diagram is labeled as follows: 1. Anchor cable; 2. Sensor body; 3. Composite protection mechanism; 4. Base; 41. Sliding rod; 42. Sliding sleeve; 5. Protective frame; 51. Mesh area; 52. Docking assembly; 521. Slot; 6. Drive assembly; 61. Drive rod; 62. Threaded area; 63. Threaded moving seat; 7. Limiting screw; 8. Protective component; 81. Telescopic tube; 82. Sliding component; 9. Transmission assembly; 91. Transmission chain; 92. Sprocket. Detailed Implementation

[0024] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Reference Figure 1-4This utility model discloses a fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls, comprising an anchor cable 1 and a sensor body 2 disposed on one side of the anchor cable 1. A composite protective mechanism 3 is provided on the outside of the sensor body 2. The composite protective mechanism 3 includes two protective frames 5 and a driving assembly 6. The two protective frames 5 are respectively located on the upper and lower sides of the outside of the sensor body 2 and are detachably connected to the sensor body 2. The driving assembly 6 connects the two protective frames 5 and is used to simultaneously drive the two protective frames 5 to move towards each other. The driving assembly 6 is disposed on a base 4, which is located below the sensor body 2. When the driving assembly 6 is running, it drives the two protective frames 5 to move closer or further away at the same time, which facilitates protection on the outside of the sensor body 2.

[0027] The protective frame 5 is detachably connected to the sensor body 2 via a docking assembly 52. ​​The docking assembly 52 is disposed on the groove wall of the slot 521, which is located at the end of the protective frame 5 and engages with the end of the sensor body 2. The docking assembly 52 includes a docking block fixed to the inner wall of the slot 521, which engages with a docking groove located at the end of the sensor. The surface of the protective frame 5 is provided with a mesh area 51. When the two protective frames 5 move closer together under the drive of the drive assembly 6, until... As the slot 521 is engaged with the end of the sensor body 2, the docking block is also inserted into the corresponding docking groove. A sealing gasket is also provided on the groove wall of the slot 521. At this time, the two protective frames 5 can be docked and cover the outside of the sensor body 2. The slot 521 not only facilitates the connection between the protective frame 5 and the sensor body 2, but also allows connecting components such as optical fibers to be connected to external components such as steel strands. The mesh area 51 facilitates air circulation and heat dissipation, while also preventing objects such as soil and stones from slipping into the protective frame 5 and affecting the sensor body 2.

[0028] The driving assembly 6 includes a driving rod 61 and two threaded movable seats 63 sleeved on the driving rod 61. The driving rod 61 is located on one side of the sensor body 2. The driving rod 61 has two helical threaded areas 62 with opposite directions. Each threaded area 62 is threadedly connected to a threaded movable seat 63. The two threaded movable seats 63 are respectively fixedly connected to one end of the two protective frames 5. The bottom of the driving rod 61 is inserted through the base 4 and rotatably connected to the base 4. The top of the driving rod 61 is fixed with a top block. Rotating the driving rod 61 allows the threaded movable seats 63 to move up and down on the threaded areas 62, thereby adjusting the distance between the two protective frames 5.

[0029] Two drive rods 61 are provided, with the other drive rod 61 located at the other end of the protective frame 5. The two drive rods 61 are located diagonally on the protective frame 5. The two drive rods 61 are connected by a transmission assembly 9, which is located in the base 4. The transmission assembly 9 includes a transmission chain 91 and two sprockets 92 that mesh with the transmission chain 91. The two sprockets 92 are respectively mounted on the rods of the two drive rods 61 located in the base 4. Rotating one drive rod 61 can drive the other drive rod 61 to rotate synchronously through the transmission assembly 9. The two drive rods 61 located diagonally can support the two ends of the protective frame 5 respectively, ensuring the balance and stability of the two ends of the protective frame 5 without affecting the movement of the protective frame 5.

[0030] A limiting screw 7 is also provided on the base 4. The limiting screw 7 passes through the base 4 and is threadedly engaged. The limiting screw 7 is inserted into a limiting hole. The limiting hole is opened on the rod body of the drive rod 61 located inside the base 4. After the drive rod 61 has rotated, the limiting screw 7 is rotated to insert it into the limiting hole, which can further limit the drive rod 61 and prevent the drive rod 61 from rotating under other external forces, thus affecting the tightness of the connection between the protective frame 5 and the sensor body 2.

[0031] Two protective components 8 are also provided on the outside of the drive rod 61. Each protective component 8 includes a telescopic tube 81, which is sleeved on the drive rod 61 to protect the threaded area 62. One end of each telescopic tube 81 is rotatably connected to a threaded moving seat 63 via a sliding member 82. The other ends of the two telescopic tubes 81 are fixedly connected to the rod body of the drive rod 61 near the base 4 and the top block, respectively. One telescopic tube 81 is located between the top block and a corresponding threaded moving seat 63, and the other telescopic tube 81 is located between the base 4 and a corresponding threaded moving seat 63, covering and shielding the corresponding threaded area. The outside of area 62; the sliding member 82 includes a slider installed at the end of the telescopic tube 81. The slider slides in an annular groove. The groove is opened in the threaded movement. When the drive rod 61 rotates, the telescopic tube 81 also rotates. At this time, as the threaded moving seat 63 moves vertically, the threaded moving seat 63 rotates with the telescopic tube 81 through the sliding member 82. The movement of the threaded moving seat 63 also drives the extension and retraction of the telescopic tube 81. The setting of the sliding member 82 allows the threaded moving seat 63 to move while driving the extension and retraction of the telescopic tube 81 without affecting the rotation of the telescopic tube 81 and the drive rod 61.

[0032] Two sliding rods 41 are also provided on the base 4. The two sliding rods 41 are respectively parallel to one side of the two drive rods 61. The bottom of the sliding rod 41 is fixed to the base 4. A sliding sleeve 42 is slidably sleeved on the sliding rod 41. The sliding sleeve 42 is fixed to the end of the protective frame 5. The sliding range and sliding direction of the sliding sleeve 42 are consistent with the moving range and moving direction of the threaded moving seat 63. The two sliding rods 41 and the two sliding sleeves 42 can further stabilize and support the protective frame 5.

[0033] The implementation principle of this utility model is as follows: the sensor body 2 is placed on the lower protective frame 5, and the end of the sensor body 2 is first connected to the lower protective frame 5 through the docking component 52. Then, the limiting screw 7 is rotated to disengage it from the drive rod 61. Rotating one of the drive rods 61 drives both drive rods 61 to rotate simultaneously. At this time, the upper and lower protective frames 5 move closer to each other until the other protective frame 5 is also docked with the sensor body 2 through the docking component 52. When the distance between the two protective frames 5 is the smallest, the sensor body 2 can be protected within it.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0035] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls, comprising an anchor cable and a sensor body disposed on one side of the anchor cable, characterized in that: A composite protection mechanism is provided on the outer cover of the sensor body. The composite protection mechanism includes two protective frames and a drive assembly. The two protective frames are located on the upper and lower sides of the outside of the sensor body and are detachably connected to the sensor body. The drive assembly is connected to the two protective frames and is used to drive the two protective frames to move towards each other simultaneously. The drive assembly is located on a base, which is located below the sensor body.

2. The fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls according to claim 1, characterized in that: The protective frame is detachably connected to the sensor body via a docking assembly. The docking assembly is located on the groove wall of the slot, and the slot is opened at the end of the protective frame and engages with the end of the sensor body. The docking assembly includes a docking block fixed on the inner wall of the slot, the docking block being inserted into the docking groove, and the docking groove being formed at the end of the sensor; The surface of the protective frame is provided with a mesh area.

3. The fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls according to claim 1, characterized in that: The drive assembly includes a drive rod and two threaded movable seats sleeved on the drive rod. The drive rod is located on one side of the sensor body. The drive rod has two threaded areas, and each threaded area is threadedly connected to one of the threaded movable seats. The two threaded movable seats are respectively fixedly connected to one end of the two protective frames. The bottom of the drive rod is inserted through the base and rotatably connected to the base, and a top block is fixed to the top of the drive rod.

4. The fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls according to claim 3, characterized in that: There are two drive rods in total, with the other drive rod located at the other end of the protective frame, and the two drive rods located on the diagonal of the protective frame; The two drive rods are connected by a transmission assembly located in the base. The transmission assembly includes a transmission chain and two sprockets that mesh with the transmission chain. The two sprockets are respectively mounted on the rods of the two drive rods located in the base.

5. The fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls according to claim 3, characterized in that: The base is also provided with a limiting screw, which is threaded and rotated through the base. The limiting screw is inserted into a limiting hole, which is formed on the rod of the drive rod located inside the base.

6. The fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls according to claim 3, characterized in that: Two protective components are also provided on the outside of the drive rod. The protective components include telescopic tubes. The telescopic tubes are sleeved on the drive rod to protect the threaded area. One end of each telescopic tube is rotatably connected to a threaded moving seat through a sliding member. The other end of each telescopic tube is fixedly connected to the rod body of the drive rod near the base and the top block, respectively. The slider includes a slider mounted on the end of the telescopic tube, the slider sliding in an annular groove formed in the threaded movement.

7. The fiber optic composite sensing device for prestressed anchor cables in concrete retaining walls according to claim 3, characterized in that: Two sliding rods are also provided on the base. The two sliding rods are respectively parallel to one side of the two drive rods. The bottom of the sliding rod is fixed to the base. A sliding sleeve is slidably sleeved on the sliding rod. The sliding sleeve is fixed to the end of the protective frame. The sliding range and sliding direction of the sliding sleeve are consistent with the moving range and moving direction of the threaded moving seat.

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