Tunnel lining temperature monitoring auxiliary device
By designing a retractable and protective temperature monitoring device, combined with a magnetic suction and roller guide system, the problems of cumbersome operation and easy damage of tunnel lining temperature monitoring equipment during construction have been solved, achieving flexible and stable temperature monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FOURTH CIVIL ENG CO LTD OF CREC SHANGHAI GRP
- Filing Date
- 2025-07-23
- Publication Date
- 2026-05-15
AI Technical Summary
Existing tunnel lining temperature monitoring equipment is cumbersome to operate, easily damaged, and requires frequent disassembly and assembly during construction, affecting the flexibility and stability of monitoring.
A device comprising a housing and a temperature monitor is designed. It achieves retractable protection through an adjustable structure, and combines a magnetic structure and a roller guide system to achieve automatic reset and stable fixation of the temperature monitor, supporting flexible movement and height adjustment.
It improves the durability and applicability of temperature monitors, simplifies the operation process, reduces manual intervention, and is suitable for frequent tunnel lining environments.
Smart Images
Figure CN224247181U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel lining technology, specifically to an auxiliary device for monitoring tunnel lining temperature. Background Technology
[0002] During tunnel lining construction, temperature changes have a significant impact on the early curing quality of concrete, structural stress control, and the risk of later cracking. Therefore, construction units usually need to monitor the temperature of the lining area in real time to ensure structural stability and construction safety.
[0003] Currently, common equipment either uses handheld temperature monitors or directly fixes the temperature monitoring device to the inner wall of the lining, but both methods still have some drawbacks, such as:
[0004] Handheld temperature monitoring requires operators to repeatedly enter and exit the construction area. During the monitoring process, the equipment is placed arbitrarily and is easily affected by construction disturbances, dust and moisture. The operation is cumbersome and lacks protection, making it prone to damage.
[0005] While fixing the monitor directly to the lining wall provides good stability, the monitoring device also needs to be completely disassembled, moved, and reinstalled when the construction progresses to a new working face. This not only consumes manpower but also reduces flexibility.
[0006] Therefore, there is an urgent need for an auxiliary device for monitoring tunnel lining temperature to address the aforementioned technical deficiencies. Utility Model Content
[0007] The purpose of this utility model is to provide an auxiliary device for monitoring tunnel lining temperature, so as to solve the problems mentioned in the background art: handheld monitors are cumbersome to operate, lack protection, and are easily damaged, while fixed monitors require repeated disassembly and assembly.
[0008] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for monitoring tunnel lining temperature, comprising a housing, a temperature monitor disposed inside the housing, and an adjustment structure installed between the housing and the temperature monitor; the adjustment structure includes a rotating rod movably mounted on the upper part of the housing, a knob mounted on the right side of the rotating rod, first conical teeth fixedly sleeved on both sides of the rotating rod, screws vertically mounted on both sides inside the housing, second conical teeth fixedly sleeved at the top of each screw, the first conical teeth meshing with the second conical teeth respectively, threaded seats screwed onto the outside of each screw, a retaining seat welded to the side of each threaded seat near the temperature monitor, the retaining seat being snapped and fixed to the temperature monitor, an outlet being opened in the middle of the bottom end of the housing, a temperature sensing probe being installed at the bottom end of the temperature monitor, the temperature sensing probe extending from the outlet to the outside of the housing.
[0009] As a further technical solution of this utility model, the knob is covered with anti-slip threads and is movably mounted on the upper part of the right side wall of the housing.
[0010] As a further technical solution of this utility model, a rubber pad is bonded to the outer periphery of the top of the temperature sensor, the diameter of the rubber pad is larger than the outlet aperture, and a viewing window is provided at the front end of the housing.
[0011] As a further technical solution of this utility model, a magnetic absorbing sheet is welded to the top of the temperature monitor, and a magnetic absorbing base is fixed to the upper part of the inner wall of the housing. The magnetic absorbing base and the magnetic absorbing sheet form an interlocking magnetic attraction structure.
[0012] As a further technical solution of this utility model, there are two sets of sliding grooves at the rear of the housing. The housing is fitted with a mounting seat through the sliding grooves. The outer wall of the mounting seat is welded with a ring. The ring consists of two sets of openable semi-rings. The semi-rings are fixedly connected by fixing bolts. A guide rail is fastened inside the ring.
[0013] As a further technical solution of this utility model, the guide rail is installed on the inner wall of the tunnel lining, and a roller is installed on the inner wall of the ring hoop, and the roller and the guide rail form a rolling connection.
[0014] Compared with the prior art, the beneficial effects of this utility model are: by setting an adjustable structure, a retractable protective structure for the temperature monitor is realized, which ensures the temperature detection function while avoiding damage to the monitor during construction, thereby improving the applicability and durability of the device;
[0015] By incorporating magnetic plates, magnetic bases, screws, and threaded seats, the temperature monitor achieves automatic reset and secure fixation in the retracted state, eliminating the need for additional clips or screws. Its simple structure and convenient operation make it suitable for frequent operations within tunnel linings.
[0016] Equipped with mounting bases, chutes, rings, rollers, and guide rails, the housing can move along the tunnel wall without manual handling. The monitoring position can be flexibly adjusted at a fixed height, eliminating the need for repeated installation and disassembly based on the tunnel lining construction location. This design balances monitoring and installation, making it suitable for large-area lining environments. Attached Figure Description
[0017] Figure 1 This is a frontal cross-sectional view of the present invention.
[0018] Figure 2 This is a side view of the structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the rear view structure of this utility model;
[0020] Figure 4 This is a front view structural diagram of the present invention.
[0021] In the diagram: 1. Housing; 2. Rotating rod; 3. First bevel tooth; 4. Second bevel tooth; 5. Screw; 6. Magnetic plate; 7. Threaded seat; 8. Outlet; 9. Temperature sensor; 10. Rubber pad; 11. Card holder; 12. Temperature monitor; 13. Magnetic seat; 14. Knob; 15. Ring clamp; 16. Fixing bolt; 17. Roller; 18. Guide rail; 19. Mounting base; 20. Slide groove; 21. Viewing window. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This utility model provides an embodiment of a tunnel lining temperature monitoring auxiliary device, comprising a housing 1, a temperature monitor 12 disposed inside the housing 1, and an adjustment structure installed between the housing 1 and the temperature monitor 12; the adjustment structure includes a rotating rod 2 movably mounted in the upper part of the housing 1, a knob 14 installed on the right side of the rotating rod 2, and first conical teeth 3 fixedly sleeved on both sides of the rotating rod 2; screws 5 are vertically installed on both sides inside the housing 1, and second conical teeth 4 are fixedly sleeved at the top of each screw 5; the first conical teeth 3 mesh with the second conical teeth 4 respectively; the screws 5... All external parts are screwed with threaded seats 7. Each threaded seat 7 is welded with a retainer 11 on the side near the temperature monitor 12. The retainer 11 is snapped and fixed to the temperature monitor 12. An outlet 8 is opened in the middle of the bottom end of the housing 1. A temperature sensor 9 is installed at the bottom end of the temperature monitor 12. The temperature sensor 9 extends from the outlet 8 to the outside of the housing 1. The knob 14 is covered with anti-slip threads. The knob 14 is movably mounted on the upper part of the right side wall of the housing 1. A rubber pad 10 is glued to the top periphery of the temperature sensor 9. The diameter of the rubber pad 10 is larger than the diameter of the outlet 8. A viewing window 21 is provided at the front end of the housing 1.
[0024] Specifically, such as Figure 1 and Figure 2As shown, the device protects the temperature monitor 12 through the housing 1. When manually measuring the temperature, turning the knob 14 causes the rotating rod 2 to rotate the first bevel tooth 3, which in turn drives the screw 5 to rotate through the second bevel tooth 4. The rotation of the two sets of screws 5 causes the threaded seat 7 to move downward against the wall inside the housing 1. The symmetrical arrangement of the screws 5 prevents the temperature monitor 12 from moving or tilting. Pushing the temperature monitor 12 down until the rubber pad 10 abuts against the outlet 8, the temperature probe 9 extends from the outlet 8 to the outside of the housing 1, and the rubber pad 10 then adheres to the outlet. The edge of knob 14 serves as a limit and seal. By turning knob 14 in the opposite direction, the temperature monitor 12 can be retracted into housing 1. This adjustment structure can assist in the use of temperature monitor 12. When not in use, temperature monitor 12 can be stored in housing 1 to avoid the impact of tunnel lining construction on temperature monitor 12. When in use, temperature monitor 12 can be pushed out and the screen of temperature monitor 12 can be viewed through window 21. Knob 14 has anti-slip threads on the outside to facilitate operation when wearing gloves and to prevent slipping in low temperature or humid tunnel environments.
[0025] A magnetic plate 6 is welded to the top of the temperature monitor 12, and a magnetic base 13 is fixed to the upper part of the inner wall of the housing 1. The magnetic base 13 and the magnetic plate 6 form a fitted magnetic structure.
[0026] Specifically, such as Figure 1 and Figure 2 As shown, when the temperature monitor 12 is retracted into the housing 1, the magnetic plate 6 on its top rises along with the threaded seat 7. When the magnetic plate 6 is engaged and magnetically fixed with the magnetic seat 13, it is retracted into place. When the knob 14 encounters resistance when turned, it indicates that the temperature monitor 12 is in place and no other fixing method is required. At the same time, since the thread helix angle of the screw 5 is less than the equivalent friction angle, the structure naturally has a self-locking characteristic, which facilitates the reset and fixing of the temperature monitor 12. The next time it is used, only the magnetic resistance needs to be overcome to turn the knob 14. The operation is simple and convenient.
[0027] Two sets of sliding grooves 20 are located at the rear of the shell 1. The shell 1 is fitted with a mounting base 19 through the sliding grooves 20. A ring 15 is welded to the outer wall of the mounting base 19. A guide rail 18 is fastened inside the ring 15. The guide rail 18 is installed on the inner wall of the tunnel lining.
[0028] Specifically, such as Figure 1 and Figure 2As shown, the guide rail 18 used in this device can be made of ordinary steel round pipe. During construction, it can be fixed with simple clamps by combining with the pre-embedded steel bars or side formwork of the tunnel lining. There is no need to purchase special rails. The materials are universal and easy to process. Construction units can easily manufacture them themselves, and the cost is controllable. It will not significantly increase the overall cost. Tunnel lining is usually carried out in sections (such as 10m / section or 20m / section). The purpose of temperature monitoring is mainly to monitor the risk of thermal cracking of newly poured concrete in a certain section. Therefore, it is not necessary to lay guide rail 18 along the entire tunnel. It is only necessary to lay it locally in a section. Considering that the lining process is relatively slow, it is sufficient to set guide rail 18 locally in a section of the lining wall to meet the needs. Only one guide rail 18 is laid in each section (which can be recycled and reused). The operation process is simple and will not increase the labor burden or construction complexity. This allows the device to move flexibly, has a protective structure, and can control the monitoring height, meeting the real-time safety monitoring needs of the construction site.
[0029] A roller 17 is installed on the inner wall of the ring 15, and the roller 17 and the guide rail 18 form a rolling connection.
[0030] Specifically, such as Figure 1 and Figure 2 As shown, a ring 15 for installation is provided at the rear of the housing 1. By aligning and fitting the mounting base 19 with the slide groove 20, the housing 1 can be hung on the outside of the guide rail 18, so that the housing 1 can be fixed at a certain position of the tunnel lining or moved to other positions for temperature monitoring without hand-holding, and ensures that the temperature monitor 12 monitors at the same height, which has the effect of flexible monitoring.
[0031] The hoop 15 consists of two sets of openable semi-rings, which are fixedly connected by fixing bolts 16.
[0032] Specifically, such as Figure 1 and Figure 2 As shown, the ring 15 can be opened or closed as needed via the fixing bolt 16, facilitating quick installation and removal on the guide rail 18 without having to move it to the end of the guide rail 18, thus simplifying maintenance and cleaning.
[0033] Working principle: Temperature monitor 12: It adopts HK-J9A industrial-grade wireless temperature recorder, powered by industrial-grade lithium battery 3.6V 19000mAh, with a battery life of more than 5 years, without the need for external power supply or wires;
[0034] Temperature sensor 9 is a high-precision PT100 or NTC thermistor probe. It uses a 16-bit ADC converter to sample and record temperature data in real time. Combined with a 16-bit analog-to-digital converter, it performs real-time acquisition and digital processing of temperature change signals.
[0035] Installation process: The guide rail 18 is pre-laid horizontally along the inner wall of the tunnel lining and extended according to the area of the construction area. The mounting base 19 is fitted with the sliding groove 20 set at the rear of the housing 1. The housing 1 can slide along the guide rail 18. The temperature monitor 12 can be moved to the target monitoring point without hand-holding. After installation, the ring 15 is locked by the fixing bolt 16 to achieve quick positioning and stable support.
[0036] Temperature monitoring: The operator rotates the knob 14 on the upper right side of the housing 1. The knob 14 is covered with anti-slip threads for easy operation with wet hands or while wearing gloves. The knob 14 drives the rotating rod 2, which is movably mounted on the top of the housing 1, to rotate. The two ends of the rotating rod 2 are respectively fixed with first bevel teeth 3, which mesh with second bevel teeth 4 fixedly connected to the top of the screw 5. When the rotating rod 2 rotates, it drives the two screws 5 to rotate synchronously. Since the threads of the screws 5 are in the same direction and each is fitted with a threaded seat 7, the threaded seat 7 moves vertically downward on the inner wall of the housing 1, thereby driving the clamp 11 welded to it to move downward as a whole. The temperature monitor 12 is fixedly engaged on the clamp 11. The temperature monitor 12 moves downward with the clamp 11, and finally the temperature sensor 9 installed at its bottom moves downward from the clamp 11. The outlet 8 at the bottom of the housing 1 extends outwards, and the temperature sensor 9 begins to collect and calculate the temperature inside the tunnel. The monitoring results are displayed on the LCD screen at the housing 1. The operator reads the data at the viewing window 21 and rotates the knob 14 in the opposite direction, causing the screw 5 to rotate in the opposite direction and drive the threaded seat 7 to rise. The temperature monitor 12 is then retracted into the housing 1. When the magnetic plate 6 welded to the top of the temperature monitor 12 rises to the upper end of the housing 1, it automatically adheres to the magnetic seat 13, forming a magnetic insertion structure. Since the thread helix angle of the screw 5 is less than the equivalent friction angle, it has a natural self-locking function. The temperature monitor 12 can be fixed in its retracted state without additional clips. When used again, simply overcoming the magnetic resistance and rotating the knob 14 again is sufficient.
[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A tunnel lining temperature monitoring auxiliary device, comprising a housing (1), characterized in that: A temperature monitor (12) is installed inside the housing (1), and an adjustment structure is installed between the housing (1) and the temperature monitor (12). The adjustment structure includes a rotating rod (2) movably mounted inside the upper part of the housing (1), a knob (14) installed on the right side of the rotating rod (2), and first bevel teeth (3) fixedly sleeved on both the left and right sides of the rotating rod (2). Screws (5) are vertically installed on both sides inside the housing (1), and second bevel teeth (4) are fixedly sleeved on the top of each screw (5). A bevel tooth (3) meshes with a second bevel tooth (4). A threaded seat (7) is screwed onto the outside of the screw (5). A retainer (11) is welded onto the side of the threaded seat (7) near the temperature monitor (12). The retainer (11) is snapped and fixed to the temperature monitor (12). An outlet (8) is opened in the middle of the bottom of the housing (1). A temperature sensor (9) is installed at the bottom of the temperature monitor (12). The temperature sensor (9) extends from the outlet (8) to the outside of the housing (1).
2. The auxiliary device for monitoring tunnel lining temperature according to claim 1, characterized in that: The knob (14) is covered with anti-slip threads and is movably mounted on the upper part of the right side wall of the housing (1).
3. The auxiliary device for monitoring tunnel lining temperature according to claim 1, characterized in that: A rubber pad (10) is attached to the top periphery of the temperature sensor (9). The diameter of the rubber pad (10) is larger than the diameter of the outlet (8). A viewing window (21) is provided at the front end of the housing (1).
4. The auxiliary device for monitoring tunnel lining temperature according to claim 1, characterized in that: The temperature monitor (12) has a magnetic absorbing plate (6) welded to its top, and a magnetic absorbing seat (13) is fixed on the upper part of the inner wall of the housing (1). The magnetic absorbing seat (13) and the magnetic absorbing plate (6) form a fitted magnetic absorbing structure.
5. The auxiliary device for monitoring tunnel lining temperature according to claim 1, characterized in that: There are two sets of sliding grooves (20) at the rear of the housing (1). The housing (1) is fitted with a mounting base (19) through the sliding grooves (20). The outer wall of the mounting base (19) is welded with a ring (15). The ring (15) consists of two sets of openable semi-rings. The semi-rings are fixedly connected by fixing bolts (16). A guide rail (18) is fastened inside the ring (15).
6. The auxiliary device for monitoring tunnel lining temperature according to claim 5, characterized in that: The guide rail (18) is installed on the inner wall of the tunnel lining, and the inner wall of the ring hoop (15) is equipped with a roller (17), and the roller (17) and the guide rail (18) form a rolling connection.