Deep foundation pit safety monitoring and early warning device

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a deep foundation pit safety monitoring and early warning device which comprises a mounting column mounted on a bottom plate, and a monitoring and early warning mechanism for monitoring and early warning deformation and inclination of the inner wall of a deep foundation pit is mounted on the mounting column. And a water level monitoring mechanism for monitoring and early warning the water level in the deep foundation pit is mounted on the mounting column. The threaded rod is led out from the interior of the connecting rod, so that the device adapts to deep foundation pits with different inner diameters, the application range of the device is widened, pressure borne by the pit wall is transmitted to an external controller in real time through the pressure sensor installed on the arc-shaped supporting plate, the stress condition of the pit wall is conveniently monitored in real time, and the working efficiency is improved. When the arc-shaped supporting plate is subjected to stronger and stronger extrusion force, the sliding rod is pushed to slide towards the inner side of the sliding cavity until the two electric contacts are in contact, an electric signal is sent to the alarm, and the alarm sends an alarm bell and flashes to alarm to remind workers of serious deformation and inclination of the pit wall and timely process the deformation and inclination.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a safety monitoring and early warning device for deep foundation pits. Background Technique

[0002] As disclosed in a Chinese patent with the public number CN220708474U, a safety monitoring and early warning device for deep foundation pits is provided. By setting a scale, a liquid level sensor and an alarm, during the vertical movement of the sliding column, the indicating frame is driven to move vertically along the outer wall of the scale. By the position of the indicating frame on the scale, it is convenient for the staff to quickly judge the height of the liquid level sensor, making the process of the staff adjusting the height position of the liquid level sensor more accurate.

[0003] During the excavation process of deep foundation pit projects, in addition to ensuring the safety of the retaining structure itself, attention should also be paid to monitoring and controlling the ground movement near the project. In some alluvial plain areas and areas near rivers, lakes, and the sea, there are often poor formation soils such as thick silt, soft interlayers, and quicksand. The retaining structure is often affected by various factors such as displacement, settlement, stress, and strain, which may lead to construction safety. In severe cases, it may cause the collapse of the foundation pit, resulting in serious safety accidents. Therefore, it is very important to conduct real-time safety monitoring and early warning for deep foundation pits. However, the above safety monitoring and early warning device only monitors the internal water level of the deep foundation pit, with certain limitations. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a safety monitoring and early warning device for deep foundation pits, which solves the technical problem that the prior art only monitors the internal water level of the deep foundation pit without conducting safety monitoring and early warning on the deformation and inclination of the pit wall of the deep foundation pit, and achieves the purpose of improving the accuracy of safety monitoring and early warning of the deep foundation pit.

[0005] To solve the above technical problems, the utility model provides the following technical solution: A safety monitoring and early warning device for deep foundation pits includes a mounting column installed on a bottom plate. A monitoring and early warning mechanism for monitoring and early warning the deformation and inclination of the inner wall of the deep foundation pit is installed on the mounting column, and a water level monitoring mechanism for monitoring and early warning the water level in the deep foundation pit is installed on the mounting column.

[0006] The monitoring and early warning mechanism includes a connecting rod installed on the mounting column. A threaded rod is threadedly connected inside the connecting rod. An arc-shaped support plate is installed at the end of the threaded rod, and a plurality of pressure sensors are installed inside the arc-shaped support plate. An early warning component for warning the deformation and inclination of the inner wall of the deep foundation pit is arranged between the threaded rod and the arc-shaped support plate. A monitoring component for monitoring the deformation and inclination of the inner wall of the deep foundation pit is installed on the arc-shaped support plate. An installation component for quick installation and disassembly is arranged between the connecting rod and the mounting column.

[0007] Preferably, the warning component includes a sliding cavity opened at the end of the threaded rod. A compression spring is installed on the inner wall of the sliding cavity. The end of the compression spring is installed with a sliding rod that slides left and right on the inner wall of the sliding cavity, and the end of the sliding rod is connected to the arc-shaped support plate. Electric contacts are installed at the inner end of the sliding rod and the inner wall of the sliding cavity. An alarm is installed on the connecting rod and is electrically connected to the electric contacts.

[0008] Preferably, the monitoring component includes a chute opened on the inner side of the arc-shaped support plate. An electric contact plate is installed inside the chute, and the electric contact plate is also electrically connected to the alarm. A sleeve rod is installed on the top of the electric contact plate. An electric contact ring is sleeved on the sleeve rod. A spring is installed between the electric contact plate and the electric contact ring, and the spring is sleeved outside the sleeve rod. A connecting rope is installed on one side of the electric contact ring, and the bottom of the connecting rope is buried in the bottom of the deep foundation pit.

[0009] Preferably, the installation component includes an installation groove opened at the top of the installation column. An installation hole is opened at the top of the installation column, and the installation hole communicates with the installation groove. A spring chamber is opened inside the installation hole. A plugging rod is inserted into the installation hole. A tension spring is installed inside the spring chamber, and the tension spring is sleeved on the plugging rod.

[0010] Preferably, the end of the connecting rod is inserted into the installation groove. An installation hole is also opened at the end of the connecting rod. A threaded interface is opened at the center of the top of the installation column.

[0011] Preferably, the water level monitoring mechanism includes a floating groove opened on the installation column. A floating plate is slidably connected up and down inside the floating groove. Second electric contacts are symmetrically installed on the top of the floating plate and the top wall of the floating groove. An alarm is installed on the installation column and is electrically connected to the second electric contacts.

[0012] By means of the above technical solutions, the present utility model provides a safety monitoring and warning device for deep foundation pits, which has at least the following beneficial effects:

[0013] 1. By leading the threaded rod out of the inside of the connecting rod, the present utility model adapts to deep foundation pits with different inner diameters, improves the application range of the device, and transmits the pressure received by the pit wall to the external controller in real time through the pressure sensor installed on the arc-shaped support plate, facilitating the real-time monitoring of the stress condition of the pit wall.

[0014] 2. When the arc-shaped support plate receives an increasingly strong extrusion force, the present utility model pushes the sliding rod to slide inward into the sliding cavity until the two electric contacts come into contact and send an electric signal to the alarm. The alarm emits a warning bell and flashes to give an alarm, reminding the workers that the deformation and inclination of the pit wall are serious and they need to be processed in time.

[0015] 3. When the pit wall deforms or inclines, the pit wall squeezes the connecting rope. At this time, the connecting rope is pulled by the extrusion force to slide the electric contact ring along the sleeve rod until it contacts the electric contact plate and sends an electric signal to the alarm to sound the alarm bell, thus playing a dual monitoring and early warning function and improving the accuracy of monitoring.

[0016] 4. When the seepage water level gradually rises, the floating plate floating on the water surface floats along the floating groove until the two second electric contacts contact and send an electric signal to the alarm for alarm, reminding the workers to pump out the accumulated water in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application.

[0018] In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a schematic diagram of the independent structure of the monitoring and early warning mechanism of the present utility model;

[0021] Figure 3 is a schematic diagram of the independent sectional structure of the early warning component of the present utility model;

[0022] Figure 4 is a schematic diagram of the independent split structure of the monitoring component of the present utility model;

[0023] Figure 5 is a schematic diagram of the independent sectional split structure of the installation component of the present utility model;

[0024] Figure 6 is a schematic diagram of the independent structure of the water level monitoring mechanism of the present utility model.

[0025] In the figure: 1, bottom plate; 2, mounting column; 3, monitoring and early warning mechanism; 301, connecting rod; 302, threaded rod; 303, arc-shaped support plate; 304, pressure sensor; 305, early warning component; 3051, sliding cavity; 3052, compression spring; 3053, sliding rod; 3054, electric contact; 3055, alarm; 306, monitoring component; 3061, chute; 3062, electric contact plate; 3063, sleeve rod; 3064, electric contact ring; 3065, connecting rope; 307, installation component; 3071, installation groove; 3072, installation hole; 3073, spring bin; 3074, insertion rod; 3075, tension spring; 4, water level monitoring mechanism; 401, floating groove; 402, floating plate; 403, second electric contact; 404, alarm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] Based on the problem that the existing technology only monitors the water level inside the deep foundation pit, but does not conduct safety monitoring and early warning on the deformation, inclination and other conditions of the pit wall of the deep foundation pit, this embodiment provides a safety monitoring and early warning device for the deep foundation pit. Please refer to Figures 1-6 This embodiment provides a safety monitoring and early warning device for the deep foundation pit, which can improve the accuracy of safety monitoring and early warning of the deep foundation pit. The safety monitoring and early warning device for the deep foundation pit includes a mounting column 2 installed on a bottom plate 1. A monitoring and early warning mechanism 3 for monitoring and early warning the deformation and inclination of the inner wall of the deep foundation pit is installed on the mounting column 2. A water level monitoring mechanism 4 for monitoring and early warning the water level in the deep foundation pit is installed on the mounting column 2. The mounting column 2 is installed at the bottom of the deep foundation pit. The monitoring and early warning mechanism 3 on the mounting column 2 is used to monitor and early warn the deformation and even inclination of the pit wall under the action of gravity and other forces. When the pit wall inclines to a certain degree, an alarm is issued through an alarm component 305 to remind the workers to handle it in time. Moreover, the setting of the mounting component 307 can quickly install the monitoring and early warning mechanism 3, which is more convenient to carry and use. The water level monitoring mechanism 4 is used to monitor and early warn the height of the water seepage inside the deep foundation pit to avoid too high water level in the pit.

[0029] Since the existing technology only monitors the water level inside the deep foundation pit, but does not conduct safety monitoring and early warning on the deformation, inclination, etc. of the pit wall of the deep foundation pit, a monitoring and early warning mechanism 3 that can conduct safety monitoring and early warning on the deformation, inclination, etc. of the pit wall is proposed. The monitoring and early warning mechanism 3 includes a connecting rod 301 installed on the installation column 2. A threaded rod 302 is threadedly connected inside the connecting rod 301. An arc-shaped support plate 303 is installed at the end of the threaded rod 302. And a plurality of pressure sensors 304 are installed inside the arc-shaped support plate 303. An early warning component 305 for warning the deformation and inclination of the inner wall of the deep foundation pit is arranged between the threaded rod 302 and the arc-shaped support plate 303. A monitoring component 306 for monitoring the deformation and inclination of the inner wall of the deep foundation pit is installed on the arc-shaped support plate 303. An installation component 307 for quick installation and disassembly is arranged between the connecting rod 301 and the installation column 2. After installing the installation column 2 at the bottom of the deep foundation pit, turn the threaded rod 302 to slide it out from the inside of the connecting rod 301 until the arc-shaped support plate 303 at the end of the threaded rod 302 fits against the pit wall of the deep foundation pit. At this time, the pressure sensor 304 installed on the arc-shaped support plate 303 is used to transmit the pressure received by the pit wall to the external controller in real time, facilitating the real-time monitoring of the force on the pit wall.

[0030] Although the external controller can receive the force on the pit wall in real time, to prevent workers from not being beside the controller and not being able to observe immediately when the pit wall is severely inclined, the device is also provided with an early warning component 305. The early warning component 305 includes a sliding cavity 3051 opened at the end of the threaded rod 302. A compression spring 3052 is installed on the inner wall of the sliding cavity 3051. A sliding rod 3053 that slides left and right on the inner wall of the sliding cavity 3051 is installed at the end of the compression spring 3052. And the end of the sliding rod 3053 is connected to the arc-shaped support plate 303. Electric contacts 3054 are installed at the inner end of the sliding rod 3053 and the inner wall of the sliding cavity 3051. An alarm 3055 electrically connected to the electric contact 3054 is installed on the connecting rod 301. When the arc-shaped support plate 303 receives an increasingly strong extrusion force, it pushes the sliding rod 3053 to slide inward along the inner wall of the sliding cavity 3051 and compress the compression spring 3052 until the electric contact 3054 on the sliding rod 3053 contacts the electric contact 3054 on the inner wall of the sliding cavity 3051 and sends an electric signal to the alarm 3055. The alarm 3055 sounds a siren and flashes to give an alarm, reminding the worker that the pit wall is severely deformed and inclined and needs to be dealt with in time.

[0031] The contact area between the arc-shaped support plate 303 and the pit wall is limited, and the arc-shaped support plate 303 itself also plays a certain supporting role. Therefore, the deformation of the pit wall at the contact part between the two may not be obvious, while the pit wall without the arc-shaped support plate 303 against it may show deformation and inclination, resulting in misjudgment by workers. Therefore, the device is also provided with a monitoring component 306. The monitoring component 306 includes a chute 3061 opened on the inner side of the arc-shaped support plate 303. An electric contact plate 3062 is installed inside the chute 3061, and the electric contact plate 3062 is also electrically connected to the alarm 3055. A sleeve rod 3063 is installed on the top of the electric contact plate 3062. An electric contact ring 3064 is sleeved on the sleeve rod 3063. A spring is installed between the electric contact plate 3062 and the electric contact ring 3064, and the spring is sleeved outside the sleeve rod 3063. A connecting rope 3065 is installed on one side of the electric contact ring 3064, and the bottom of the connecting rope 3065 is buried in the bottom of the deep foundation pit. When the pit wall deforms or inclines, the pit wall squeezes the connecting rope 3065. Because the bottom of the connecting rope 3065 is buried in the bottom of the deep foundation pit, at this time, the connecting rope 3065 is pulled by the extrusion force to pull the electric contact ring 3064 to slide down along the sleeve rod 3063 until the electric contact ring 3064 contacts the electric contact plate 3062 and sends an electric signal to the alarm 3055 to sound the alarm bell, thus playing the function of dual monitoring and early warning and improving the accuracy of monitoring.

[0032] The integrated monitoring and early warning mechanism 3 has too large an area and is not convenient for transportation. Therefore, the device is also provided with an installation component 307. The installation component 307 includes an installation groove 3071 opened on the top of the installation column 2. An installation hole 3072 is opened on the top of the installation column 2, and the installation hole 3072 communicates with the installation groove 3071. A spring chamber 3073 is opened inside the installation hole 3072. A plugging rod 3074 is inserted into the installation hole 3072. A tension spring 3075 is installed inside the spring chamber 3073, and the tension spring 3075 is sleeved on the plugging rod 3074.

[0033] The end of the connecting rod 301 is inserted into the installation groove 3071. The end of the connecting rod 301 is also provided with an installation hole 3072. A threaded interface is opened at the center of the top of the installation column 2. During use, the plugging rod 3074 is pulled upward to compress the tension spring 3075, and then the end of the connecting rod 301 is inserted into the installation groove 3071. Subsequently, the plugging rod 3074 is released, and the tension spring 3075 resets to drive the plugging rod 3074 to insert into the installation hole 3072 on the connecting rod 301, so as to quickly complete the installation of the connecting rod 301, which is more convenient to use.

[0034] Embodiment 2

[0035] On the basis of Embodiment 1, as Figures 1-6As shown, since the deep foundation pit is relatively deep, water inside the rock layer or soil layer will seep into the interior of the deep foundation pit under pressure. If too much seepage water accumulates, it will have a certain impact on the deep foundation pit. Therefore, the device is also provided with a water level monitoring mechanism 4. The water level monitoring mechanism 4 includes a floating groove 401 opened on the mounting column 2. A floating plate 402 is slidably connected up and down inside the floating groove 401. Second electrical contacts 403 are symmetrically installed on the top of the floating plate 402 and the top wall of the floating groove 401. An alarm 404 electrically connected to the second electrical contacts 403 is installed on the mounting column 2. When the seepage water level gradually rises, the floating plate 402 floating on the water surface floats along the floating groove 401 until the second electrical contact 403 on the floating plate 402 contacts the second electrical contact 403 on the top wall of the floating groove 401, and an electrical signal is sent to the alarm 404 for alarm, reminding the workers to pump out the accumulated water in time.

[0036] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety monitoring and early warning device for deep foundation pits, comprising a mounting column (2) installed on a bottom plate (1), characterized in that: A monitoring and warning mechanism (3) for monitoring and warning the deformation and inclination of the inner wall of a deep foundation pit is installed on the installation column (2), and a water level monitoring mechanism (4) for monitoring and warning the water level in the deep foundation pit is installed on the installation column (2); The monitoring and warning mechanism (3) includes a connecting rod (301) installed on the installation column (2). A threaded rod (302) is threadedly connected inside the connecting rod (301). An arc-shaped support plate (303) is installed at the end of the threaded rod (302). A plurality of pressure sensors (304) are installed inside the arc-shaped support plate (303). An early warning component (305) for warning the deformation and inclination of the inner wall of the deep foundation pit is arranged between the threaded rod (302) and the arc-shaped support plate (303). A monitoring component (306) for monitoring the deformation and inclination of the inner wall of the deep foundation pit is installed on the arc-shaped support plate (303). An installation component (307) for quick installation and disassembly is arranged between the connecting rod (301) and the installation column (2).

2. The safety monitoring and early warning device for deep foundation pits according to claim 1, wherein: The early warning component (305) includes a sliding cavity (3051) opened at the end of the threaded rod (302). A compression spring (3052) is installed on the inner wall of the sliding cavity (3051). A sliding rod (3053) that slides left and right on the inner wall of the sliding cavity (3051) is installed at the end of the compression spring (3052), and the end of the sliding rod (3053) is connected to the arc-shaped support plate (303). Electric contact heads (3054) are installed at the inner end of the sliding rod (3053) and the inner wall of the sliding cavity (3051). An alarm (3055) electrically connected to the electric contact heads (3054) is installed on the connecting rod (301).

3. The safety monitoring and early warning device for deep foundation pits according to claim 2, wherein: The monitoring component (306) includes a sliding groove (3061) opened on the inner side of the arc-shaped support plate (303). An electric contact plate (3062) is installed inside the sliding groove (3061), and the electric contact plate (3062) is also electrically connected to the alarm (3055). A sleeve rod (3063) is installed on the top of the electric contact plate (3062). An electric contact ring (3064) is sleeved on the sleeve rod (3063). A spring is installed between the electric contact plate (3062) and the electric contact ring (3064), and the spring is sleeved outside the sleeve rod (3063). A connecting rope (3065) is installed on one side of the electric contact ring (3064), and the bottom of the connecting rope (3065) is buried in the bottom of the deep foundation pit.

4. A deep foundation pit safety monitoring and early warning device according to claim 1, characterized in that: The installation component (307) includes an installation groove (3071) opened at the top of the installation column (2). An installation hole (3072) is opened at the top of the installation column (2), and the installation hole (3072) communicates with the installation groove (3071). A spring chamber (3073) is opened inside the installation hole (3072). A plugging rod (3074) is inserted into the installation hole (3072). A tension spring (3075) is installed inside the spring chamber (3073), and the tension spring (3075) is sleeved on the plugging rod (3074).

5. The safety monitoring and early warning device for deep foundation pits according to claim 4, wherein: The end of the connecting rod (301) is inserted into the interior of the mounting groove (3071), and a mounting hole (3072) is also provided at the end of the connecting rod (301). A threaded interface is provided at the center of the top of the mounting post (2).

6. The safety monitoring and early warning device for deep foundation pits according to claim 1, wherein: The water level monitoring mechanism (4) includes a floating groove (401) provided on the mounting post (2). A floating plate (402) is slidably connected up and down inside the floating groove (401). Second electrical contacts (403) are symmetrically installed on the top of the floating plate (402) and the top wall of the floating groove (401). An alarm (404) electrically connected to the second electrical contacts (403) is installed on the mounting post (2).

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