Deep-buried station construction site temperature control indicating device

Abstract

The utility model belongs to underground construction monitoring field, specifically discloses a kind of deep-buried station construction site temperature control indicating device, including temperature sensing optical cable and the installation component for installing temperature sensing optical cable, installation component includes the base for being connected on rock wall and the snap ring detachably connected on base, snap ring includes the first connecting part of clamping part and fixed on both sides of clamping part, the width of clamping part is greater than the radius of clamping part;First connecting part is provided with the insertion hole along its radial, base is provided with the first connecting hole for first connecting part insertion and the sliding hole along the radial of first connecting part, sliding hole is slidably connected with the insertion rod for being inserted into insertion hole.In the utility model, the problem that temperature sensing optical cable cannot be directly bound according to required position requirement can be solved, and even if it is bound on steel arch, steel wire rope and binding belt are relatively thin, and temperature sensing optical cable is prone to damage under stress at binding place.

Description

Technical Field

[0001] This utility model belongs to the field of underground construction monitoring, specifically involving a temperature control indicator device for deep-buried railway station construction sites. Background Technology

[0002] During the construction of underground railway station tunnels, the complex geological conditions, great depth, high initial ground temperature of the surrounding rock, concentrated heat dissipation from construction machinery, and hydration heat of large-volume concrete create severe heat hazards, jeopardizing construction safety and project quality. Currently, temperature monitoring within construction tunnels relies primarily on traditional methods, namely, monitoring through discrete temperature sensors installed in the tunnel. This method has limited monitoring range and numerous blind spots. To address this, existing technologies also employ the installation of temperature-sensing optical cables within the tunnel. These cables are specialized optical cable technologies used in the construction field for temperature monitoring. This technology utilizes fiber optic sensing principles to achieve real-time detection of ambient temperature and is primarily applied in scenarios such as building safety monitoring.

[0003] In existing technologies, temperature-sensing optical cables are typically installed by directly binding and suspending them onto steel arches erected within the tunnel support using wire ropes or binding straps. However, depending on the tunnel's geological conditions, when the surrounding rock is sufficiently stable, the expensive and slow-construction steel arches can be omitted, or only partial steel frame support can be erected instead of a complete steel arch. This makes it impossible to directly bind the temperature-sensing optical cables to the required locations. Furthermore, even when bound to the steel arch, the wire ropes and binding straps are relatively thin, making the temperature-sensing optical cables susceptible to damage due to stress at the binding points. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a temperature control indicator device for deep-buried railway station construction sites, which solves the problem that temperature-sensing optical cables cannot be directly tied according to the required location, and even when tied to steel arches, the steel wire ropes and binding tapes are relatively thin, making the temperature-sensing optical cables prone to damage due to stress at the tying point.

[0005] According to the embodiments of this utility model, the following technical solution is adopted: A temperature control indicator device for a deep-buried railway station construction site includes a temperature-sensing optical cable and an installation assembly for installing the temperature-sensing optical cable. The installation assembly includes a base for connecting to a rock wall and a retaining ring detachably connected to the base. The retaining ring includes a retaining part and a first connecting part fixed on both sides of the retaining part. The width of the retaining part along its axial direction is greater than the radius of the retaining part. The first connecting part has a radial insertion hole. The base has a first connecting hole for inserting the first connecting part and a sliding hole along the radial direction of the first connecting part. A rod for inserting into the insertion hole is slidably connected in the sliding hole.

[0006] Compared with the prior art, the present invention has the following beneficial effects: 1. By designing a clamping part with a larger axial width to hold the temperature-sensing optical cable, the width of the clamping part along the axial direction is much larger than the width of traditional steel wire rope or binding tape, which greatly increases the contact area between the clamping part and the temperature-sensing optical cable, dispersing the concentrated stress into distributed stress, and avoiding the problem of damage to the temperature-sensing optical cable due to the concentrated force at the binding point.

[0007] 2. The base can be pre-fixed precisely at the required monitoring position on the tunnel rock wall or steel arch. During installation, simply insert the first connecting part of the retaining ring into the first connecting hole of the base and slide the insert rod into the insertion hole to complete the locking. This process is simple and quick, realizes modular installation, and ensures that the temperature sensing optical cable can be laid strictly according to the designed monitoring path (such as the precise station number of the tunnel arch top and arch waist), thus ensuring the accuracy and effectiveness of temperature monitoring data.

[0008] Furthermore, the retaining ring also includes a second connecting part, which includes a connecting block mounted on the retaining part and a connecting rod mounted on the connecting block. The connecting rod is parallel to the axis of the first connecting part. The base also has a second connecting hole for inserting the connecting rod. The sliding hole connects the first connecting block and the second connecting hole. One end of the insert rod facing the second connecting hole has a wedge surface, and the connecting rod pushes the insert rod to slide through the wedge surface. The insert rod includes a slider slidably connected in the sliding hole and a rod body slidably connected to the slider. A spring is fixed between the rod body and the slider.

[0009] Furthermore, the connecting rod is threaded onto the connecting block; magnetic blocks for mutual attraction are installed on the inner wall of the second connecting hole and at the end of the insert rod.

[0010] Furthermore, a spring is connected between the end of the insertion rod and the inner wall of the sliding hole, and a wedge surface is provided at the end of the insertion rod that extends into the first connecting hole. The first connecting part pushes the insertion rod to slide through the wedge surface.

[0011] Furthermore, rubber pads are fixed to the inner wall of the snap-fit ​​part and the surface of the base.

[0012] Furthermore, the inner walls at both ends of the snap-fit ​​part are provided with arc-shaped sections.

[0013] Furthermore, mounting holes are provided on both sides of the base.

[0014] Furthermore, multiple temperature-sensing optical cables are installed and arranged in a network on the rock wall of the construction tunnel.

[0015] Furthermore, a protective sleeve is fitted onto the temperature-sensing optical cable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model, with the insertion rod representing design method A.

[0017] Figure 2This is a schematic diagram of the overall structure of an embodiment of the present utility model, with the insertion rod representing design method B.

[0018] Figure 3 for Figure 1 Side sectional view of the card connector.

[0019] Figure 4 This is a schematic diagram of the installation of the temperature-sensing optical cable in the construction tunnel according to an embodiment of this utility model.

[0020] In the diagram: 1. Base; 2. Mounting hole; 3. Snap-fit ​​part; 4. First connecting part; 5. Temperature-sensing optical cable; 6. Connecting block; 7. Connecting rod; 8. Rod body; 9. Slider; 10. Spring; 11. Insert rod; 12. Wedge surface; 13. Sliding hole; 14. Insertion hole; 15. Arc segment. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings, and specific embodiments will be given. like Figure 1 As shown, the temperature control indicator device for the construction site of the deep-buried railway station includes a temperature-sensing optical cable 5 and an installation assembly for installing the temperature-sensing optical cable 5. The temperature-sensing optical cable 5 is an optical cable that uses the optical fiber sensing principle to detect ambient temperature in the existing technology. In the actual design process, a fiber optic grating demodulator connected to the temperature-sensing optical cable 5 can be used to emit laser pulses to the temperature-sensing optical cable 5 and receive backscattered light. The temperature information continuously distributed on the entire temperature-sensing optical cable 5 can be obtained through demodulation, so as to monitor the temperature information of specific points in the construction tunnel.

[0022] The mounting components include a base 1 for connecting to the rock wall and a retaining ring detachably connected to the base 1. Mounting holes 2 are provided on both sides of the base 1. The base 1 can be pre-fixed precisely at the required monitoring position on the tunnel rock wall or steel arch. When it is necessary to fix the base 1 to the tunnel rock wall, the base 1 can be fixed by passing a nail gun or anchor bolt through the mounting holes 2. When it is necessary to fix the base 1 to the steel arch, the binding strap or wire rope can be passed through the mounting holes 2 and tied to the steel arch.

[0023] The retaining ring includes a retaining portion 3 and a first connecting portion 4 fixed on both sides of the retaining portion 3, so as to... Figure 1 As shown in the example, the latching part 3 includes a first section in the shape of a semi-circular ring and a second section in the shape of a plate fixed on both sides of the first section. The size of the second section and the radius of the first section can be designed according to the outer diameter of the temperature-sensing optical cable 5 that needs to be latched. Figure 3As shown, the width of the snap-fit ​​part 3 along its axial direction is greater than the radius of the snap-fit ​​part 3. By setting the width of the snap-fit ​​part 3, the contact area between the snap-fit ​​part 3 and the temperature-sensing optical cable 5 is increased. Rubber pads are fixed on the inner wall of the snap-fit ​​part 3 and the surface of the base 1. The space between the snap-fit ​​part 3, the base 1 and the outer wall of the temperature-sensing optical cable 5 is filled by rubber pads of a certain thickness to avoid squeezing and damaging the outer wall of the temperature-sensing optical cable 5. At the same time, it can provide buffering for the temperature-sensing optical cable 5 under the vibration generated during construction.

[0024] The first connecting part 4 is designed as a rod, and has a radial insertion hole 14. The base 1 has a first connecting hole for the first connecting part 4 to be inserted and a radial sliding hole 13. A rod 11 for insertion into the insertion hole 14 is slidably connected in the sliding hole 13. By inserting the rod 11 into the insertion hole 14, a mechanical self-locking mechanism is formed on the first connecting part 4. The following embodiment provides two design methods for the rod 11, as follows: A. As Figure 1 As shown, the retaining ring also includes a second connecting part, which includes a connecting block 6 mounted on the retaining part 3 and a connecting rod 7 mounted on the connecting block 6. The connecting rod 7 is parallel to the axis of the first connecting part 4. The base 1 also has a second connecting hole for inserting the connecting rod 7. The sliding hole 13 connects the first connecting block 6 and the second connecting hole. The end of the insert rod 11 facing the second connecting hole has a wedge surface 12. The connecting rod 7 pushes the insert rod 11 to slide through the wedge surface 12. The insert rod 11 includes a slider 9 slidably connected in the sliding hole 13 and a rod body 8 slidably connected to the slider 9. A spring 10 is fixed between the rod body 8 and the slider 9.

[0025] When the first connecting part 4 is inserted into the first connecting hole, the connecting rod 7 is simultaneously inserted into the second connecting hole. At the same time, the connecting rod 7 pushes the slider 9 to move. When the insertion hole 14 is not yet fully aligned with the sliding hole 13, the insertion rod 11 cannot be inserted into the insertion hole 14. At this time, the rod body 8 slides on the slider 9, and the spring 10 contracts. When the insertion hole 14 and the sliding hole 13 are fully aligned, the restoring force of the spring 10 pushes the rod body 8 into the insertion hole 14. The connecting rod 7 abuts against the end of the insertion rod 11, preventing the insertion rod 11 from sliding back into the second connecting hole, thus completing the self-locking.

[0026] Based on the above design method A, optionally, the connecting rod 7 is threaded onto the connecting block 6, and magnetic blocks for mutual attraction are installed on the inner wall of the second connecting hole and the end of the insertion rod 11. When the retaining ring is assembled onto the mounting assembly, the connecting rod 7 is assembled onto the connecting block 6. When the retaining ring needs to be removed, first remove the connecting rod 7. After it no longer obstructs the movement of the insertion rod 11, the insertion rod 11 slides due to the attraction of the magnetic blocks, no longer obstructing the first connecting part 4, and the retaining ring can be removed.

[0027] B, such as Figure 2As shown, a spring 10 connects the end of the insertion rod 11 and the inner wall of the sliding hole 13. A wedge surface 12 is provided at the end of the insertion rod 11 that extends into the first connecting hole. The first connecting part 4 pushes the insertion rod 11 to slide through the wedge surface 12. When the spring 10 is in its natural state, the end of the insertion rod 11 is located inside the first connecting hole. This design is simpler. When the first connecting part 4 is inserted, it pushes the insertion rod 11 into the sliding hole 13. Afterward, the insertion rod 11 can be inserted into the insertion hole 14 by the restoring force of the spring 10. However, this design makes it inconvenient to remove the retaining ring.

[0028] In another embodiment of this utility model, combined with Figure 4 As shown, multiple temperature-sensing optical cables 5 are arranged in a network on the rock wall of the construction tunnel, for example... Figure 4 As shown, the temperature-sensing optical cable 5 can be laid along the arched cross-section of the construction tunnel or along the axial direction of the construction tunnel. Multiple temperature-sensing optical cables 5 laid evenly along the cross-section and axial direction of the construction tunnel can form a network to create a temperature monitoring network in the construction tunnel and achieve multi-directional monitoring.

[0029] In another embodiment of this utility model, a protective sleeve is provided on the temperature-sensing optical cable 5. The protective sleeve can be selected from existing technologies such as polyurethane sheath, metal corrugated pipe, and stainless steel armor. Whether to provide a protective sleeve can be selected according to needs. For example, when the temperature-sensing optical cable 5 needs to bypass sharp steel structure corners, concrete corners, or other locations where there is cross friction with the cable, a protective sleeve can be provided for protection.

[0030] In another embodiment of this utility model, combined with Figure 3 As shown, the inner walls of both ends of the snap-fit ​​part 3 are provided with arc-shaped sections 15. The arc-shaped sections 15 are provided to prevent the corners of the snap-fit ​​part 3 from being damaged by friction or force on the temperature-sensing optical cable 5.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A temperature control indicator device for deep-buried railway station construction sites, characterized in that: The device includes a temperature-sensing optical cable and an installation assembly for installing the cable. The assembly includes a base for connecting to a rock wall and a retaining ring detachably connected to the base. The retaining ring includes a snap-fit ​​portion and first connecting portions fixed on both sides of the snap-fit ​​portion. The width of the snap-fit ​​portion along its axial direction is greater than its radius. The first connecting portion has a radial insertion hole. The base has a first connecting hole for inserting the first connecting portion and a sliding hole along the radial direction of the first connecting portion. A rod for inserting into the insertion hole is slidably connected in the sliding hole.

2. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: The retaining ring further includes a second connecting part, which includes a connecting block mounted on the retaining part and a connecting rod mounted on the connecting block. The connecting rod is parallel to the axis of the first connecting part. The base also has a second connecting hole for inserting the connecting rod. The sliding hole connects the first connecting block and the second connecting hole. One end of the insert rod facing the second connecting hole has a wedge surface. The connecting rod pushes the insert rod to slide through the wedge surface. The insert rod includes a slider slidably connected in the sliding hole and a rod body slidably connected to the slider. A spring is fixed between the rod body and the slider.

3. The temperature control indicator device for deep-buried railway station construction sites according to claim 2, characterized in that: The connecting rod is threaded onto the connecting block; magnetic blocks for mutual attraction are installed on the inner wall of the second connecting hole and at the end of the insert rod.

4. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: A spring is connected between the end of the insertion rod and the inner wall of the sliding hole. One end of the insertion rod that extends into the first connecting hole is provided with a wedge surface, and the first connecting part pushes the insertion rod to slide through the wedge surface.

5. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: Rubber pads are fixed to the inner wall of the snap-fit ​​part and the surface of the base.

6. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: The inner walls at both ends of the snap-fit ​​part are provided with arc-shaped sections.

7. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: Mounting holes are provided on both sides of the base.

8. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: The temperature-sensing optical cables are arranged in multiple strands and combined into a network on the rock wall of the construction tunnel.

9. The temperature control indicator device for deep-buried railway station construction sites according to claim 1, characterized in that: The temperature-sensing optical cable is fitted with a protective sleeve.

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