Soft foundation vacuum degree automatic monitoring device

Abstract

The invention discloses a soft foundation vacuum degree automatic monitoring device, which comprises a collection base, a measuring tube assembly carrying a plurality of monitoring units, a communication base and a locking assembly, and is characterized in that the collection base is placed on the surface of a soil body corresponding to a detection hole and is positioned below a pre-pressing sealing film; the measuring tube assembly is mounted on the acquisition base and extends downwards into the detection hole, so that the plurality of monitoring units correspond to different depth areas; the communication base is used for acquiring monitoring data of the monitoring unit in a wireless mode, and the communication base is installed on the surface of the soil body corresponding to the acquisition base and located above the pre-pressing sealing film. And the locking assembly is used for locking the communication base on the acquisition base without damaging the pre-pressing sealing film. The communication base is locked to the collection base through the locking assembly to achieve stable installation, stable installation of the communication base is achieved under the condition that the pre-pressing sealing film is not damaged, and the effectiveness of the structure and the stability of data transmission are kept for a long time in the whole soft soil foundation treatment process.

Description

Technical Field

[0001] The invention relates to a soft foundation vacuum automatic monitoring device. Background Art

[0002] The observation of soil vacuum degree in vacuum preloading method, especially the vacuum degree under the sealing membrane, is an important indicator for construction process control, and is an important basis for understanding whether the preloading load meets the design requirements and evaluating the vacuum preloading reinforcement effect. Among them, accurate and effective measurement of vacuum degree under the sealing membrane can, on the one hand, provide construction personnel with timely information on vacuum degree changes, so that the soil vacuum degree detection results are highly synchronized; on the other hand, it can provide accurate information feedback for the entire project construction, which is conducive to information coordination and information platform management, and thus facilitates real-time control of vacuum preloading construction quality; in addition, it can also provide early warning information and conduct early warning control management in a timely and effective manner to ensure the safety of construction.

[0003] The current vacuum degree monitoring method mainly relies on manual labor, which has the disadvantages of low efficiency due to the need for personnel to read meters and record measurements point by point, and the inability to continuously monitor the changes in vacuum pressure. To solve the above problems, wireless measurement methods are proposed in the prior art. For example, Chinese patent CN202111517244.3 discloses an embedded vacuum preloading vacuum degree wireless measurement device and method. However, this method is not a completely wireless solution, and it is still necessary to penetrate the preloading sealing film of the data acquisition module data cable and antenna (the interface between the vacuum sealing film and the waterproof data cable is sealed with a double layer of waterproof airtight glue and plastic cable ties). In this way, the vacuum sealing film is damaged and needs to be sealed. During the construction process, water leakage often occurs at the damaged position.

[0004] During the construction process of the vacuum preloading method, a deep water layer covers the sealing membrane, which is a major problem that traditional wireless communication solutions cannot transmit data. The corresponding communication base station is set up at the detection hole, which needs to face the problem of how to fix the installation. The traditional method of destroying the sealing membrane and then sealing or restoring it can achieve fixation, but it will cause the sealing membrane to leak. Therefore, there is still a need for better improvement of the existing technology. Summary of the invention

[0005] In order to at least partially solve the deficiencies in the prior art, the main purpose of the present invention is to provide a soft base vacuum automatic monitoring device that can stably fix a communication base without destroying a pre-pressed sealing film.

[0006] In order to achieve the above main purpose, the present invention provides a soft foundation vacuum automatic monitoring device, which includes a collection base, a measuring tube assembly equipped with multiple monitoring units, a communication base and a locking assembly. The collection base is placed on the soil surface corresponding to the detection hole and is located below the pre-pressing sealing film. The measuring tube assembly is installed on the collection base and extends downward into the detection hole, so that the multiple monitoring units correspond to different depth areas; the communication base is used to obtain the monitoring data of the monitoring unit by wireless means, and the corresponding collection base is installed on the soil surface and is located above the pre-pressing sealing film; the locking assembly is used to lock the communication base on the collection base without damaging the pre-pressing sealing film;

[0007] The locking assembly includes a positioning plate and a folding module with a plurality of gates. A convex groove with a small top opening and a large internal space is provided in the positioning plate. When the folding module is folded, it can be moved up and down through the top opening of the positioning plate and placed in the convex groove. When the folding module is unfolded, the plurality of gates are circumferentially unfolded and extended to the side wall of the convex groove to prevent the folding module from being separated from the convex groove.

[0008] The collection base is configured to be connected to the positioning plate, and the communication base is configured to be connected to the folding and unfolding module. When in use, the collection base and the positioning plate are first fixedly installed on the soil surface, and then the folding and unfolding module is connected to the positioning plate from the upper surface of the pre-pressed sealing film after the surface is covered with a pre-pressed sealing film. The communication base and the collection base are docked and matched while pulling without damaging the pre-pressed sealing film.

[0009] In the above technical solution of the present invention, the multiple monitoring units carried by the measuring tube assembly are used to obtain vacuum data corresponding to different depth areas. This part of the data is acquired by the communication base in a wireless manner. The communication base is locked to the collection base through a locking assembly to achieve stable installation, and will not be affected by the construction site and cause communication disconnection. The communication base is stably installed without destroying the pre-compression sealing film, so as to maintain the effectiveness of the structure and the stability of data transmission for a long time during the entire soft soil foundation treatment process.

[0010] The positioning disk and the folding module in the locking assembly of the present invention can form a mating connection. When the folding module is folded, it can be smoothly placed in the convex groove. When the folding module is unfolded, the gate plate on it is circumferentially unfolded and extends into the side wall of the convex groove to limit the folding module from being separated from the positioning disk (convex groove); under such a structure, the folding module can directly realize its connection with the positioning disk from above the pre-pressed sealing film, the communication base is connected to the folding module, and the collection base is connected to the positioning disk. The mating connection between the folding module and the positioning disk can synchronously realize the mating connection between the communication base and the collection base, and finally realize the fixed mating of the communication base compared to the collection base without damaging the sealing film.

[0011] According to a specific embodiment of the present invention, the positioning plate includes a positioning base plate, an outer ring wall and a limiting top plate, and the limiting top plate is installed on the positioning base plate through the outer ring wall to form a convex groove; wherein a limiting groove opening toward the inside is formed between the limiting top plate and the positioning base plate, and when the folding module is unfolded, multiple gate plates are circumferentially unfolded and extend into the limiting groove.

[0012] According to a specific embodiment of the present invention, the folding and unfolding module further comprises a downloading plate and an upper loading plate which can rotate relative to each other, and a plurality of gate plates are located between the downloading plate and the upper loading plate;

[0013] The download plate is provided with a guide groove corresponding to the gate plate, the guide groove is inclined relative to the radial direction of the positioning plate, and the first rotating column and the second rotating column are respectively provided on the upper and lower sides of the gate plate. The gate plate is connected to the upper loading plate through the first rotating column, and the gate plate is connected to the download plate through the second rotating column that can slide in the guide groove; wherein, when the upper loading plate rotates forward or reversely, under the limit cooperation of the guide groove and the second rotating column, the first rotating column rotates by itself to allow the gate plate to swing inward or outward.

[0014] In the above technical scheme, an upper loading plate, a lower loading plate and a plurality of gate plates are stacked up and down to form an integral structure. The upper loading plate can be rotated relative to the lower loading plate by rotating when an external force acts on the upper loading plate. At the same time, the gate plate is driven to swing inward or outward under the limiting action of the first rotating column, the second rotating column and the guide groove. When the gate plate swings outward, the overall outer contour becomes larger and forms a limiting fit with the convex groove, thereby finally realizing the floating limiting connection fit between the folding module and the positioning plate.

[0015] According to a specific embodiment of the present invention, a roller is provided on the gate plate, and the pre-stressed sealing film is pulled by the roller when the gate plate swings outward; wherein the roller can generate self-rotation when pulling the pre-stressed sealing film.

[0016] Furthermore, an elastic stopper is further provided on the gate plate, and when the gate plate swings outwards, the elastic stopper contacts the pre-pressed sealing membrane before the roller, thereby providing protection for the pre-pressed sealing membrane.

[0017] According to a specific embodiment of the present invention, a plurality of exhaust holes are provided on the positioning base plate and the outer ring wall, and when the pre-pressed sealing membrane is covered with water during the construction process, the air in the convex groove is discharged outward through the exhaust holes.

[0018] According to a specific embodiment of the present invention, the locking assembly further includes a movable engaging member, and the upper loading plate is provided with engaging teeth that rotate synchronously therewith, wherein when the upper loading plate rotates in the opposite direction so that the gate plate swings outward into position, the engaging member can engage with the engaging teeth to limit the upper loading plate from rotating back in the positive direction.

[0019] In the above technical solution, the position of the folding and unfolding module can be locked through the cooperation between the engaging member and the engaging teeth, so that it can be kept in the unfolded position for a long time and firmly installed on the positioning plate, which has the advantages of good structural stability and convenient operation.

[0020] According to a specific implementation of the present invention, the acquisition base and the communication base are docked and matched up and down and are located in the middle of the positioning plate, wherein the middle of the positioning plate, the download plate, and the upload plate are correspondingly provided with perforations.

[0021] According to a specific embodiment of the present invention, it further includes an upper protective shell and a lower protective shell, the positioning plate is supported on the lower protective shell, and the collection base is located in the lower protective shell; the communication base is located in the upper protective shell, and the upper protective shell is supported on the lower protective shell.

[0022] According to a specific embodiment of the present invention, the number of gate plates is more than three, and the more than three gate plates are distributed in a circular array.

[0023] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the overall structure diagram of the soft foundation vacuum degree automatic monitoring device of the present invention;

[0025] Figure 2 It is an exploded view of the acquisition base, communication base and locking assembly;

[0026] Figure 3 It is a structural diagram of the positioning plate and the folding and unfolding module;

[0027] Figure 4 yes Figure 3 A top view of

[0028] Figure 5 yes Figure 4 Another position state diagram of ;

[0029] Figure 6 It is a three-dimensional cross-sectional view of the positioning plate and the folding and unfolding module;

[0030] Figure 7 yes Figure 6 A front view of

[0031] Figure 8 It is the decomposition structure diagram of the folding module;

[0032] Fig. 9 It is the structural diagram of the upload board;

[0033] Fig.10is a three-dimensional cross-sectional view of a vacuum detection tube;

[0034] Fig.11 yes Fig.10 A front view of

[0035] Fig.12 This is an exploded view of the vacuum detection tube and the transfer tube;

[0036] Fig.13 It is an exploded anatomical view of the acquisition base and the communication base;

[0037] Fig.14 This is an exploded view of the collection base;

[0038] Fig.15 is an exploded view of the communications base. DETAILED DESCRIPTION

[0039] In the following description, many specific details are explained in conjunction with the embodiments to facilitate a full understanding of the present invention. However, it should be understood that the following embodiments and detailed descriptions are only for illustrative purposes and do not limit the scope of protection of the present invention.

[0040] like Figure 1-2 As shown, the soft foundation vacuum automatic monitoring device of the embodiment of the present invention includes a collection base 10, a measuring tube assembly 20, a communication base 30 and a locking assembly 40; wherein the measuring tube assembly 20 is equipped with multiple monitoring units, the monitoring unit is specifically a pressure monitoring unit 24, and the measuring tube assembly 20 is adapted according to the required monitoring depth on site and installed in the detection hole, so that the multiple pressure monitoring units 24 correspond to different depth areas.

[0041] The collection base 10 is used as a collection unit at the top of the detection hole, and a collection board is arranged inside the collection base. The collection board is connected to multiple pressure monitoring units 24 by means of cables to obtain vacuum pressure data of multiple pressure monitoring units 24; wherein, the collection base 10 is placed on the soil surface corresponding to the detection hole and is located below the pre-pressure sealing film, and the measuring tube assembly 20 is connected to the collection base 10 and supported during the installation stage by the collection base 10.

[0042] The communication base 30 is used to obtain the monitoring data of the monitoring unit by wireless means, and its corresponding collection base 10 is installed on the soil surface and is located above the pre-pressing sealing membrane; during the construction process, after the pre-pressing sealing membrane is laid, the communication base 30 equipped with a forwarding module 31 that can perform long-distance data transmission is installed at the detection hole, and the communication base 30 corresponds to the collection base 10 and is installed on the soil surface and is located above the pre-pressing sealing membrane. The collection base 10 and the communication base 30 are separated by the pre-pressing sealing membrane without damaging the pre-pressing sealing membrane; the communication base 30 obtains the data obtained by the collection board by wireless means, which can effectively solve the problem that the data of the collection board under the pre-pressing sealing membrane cannot be transmitted by conventional means due to the surface of the pre-pressing sealing membrane being covered with water during vacuuming during soft foundation construction, and the water coverage depth is often more than 50 cm.

[0043] The forwarding module 31 in the embodiment is used to establish a communication link with the user terminal. The monitoring data acquired by the acquisition board is transmitted to the forwarding module 31 by wireless means, and then forwarded to the user terminal by the forwarding module 31 to achieve continuous monitoring of multiple monitoring points. In the above process, the acquisition board establishes a communication link with the forwarding module 31 by wireless means, and the forwarding module 31 establishes a communication link with the user terminal. The above relay communication method can achieve stable data transmission without damaging the pre-pressed sealing film in the harsh communication environment on site, and realize continuous monitoring of the changes in vacuum pressure during the construction process.

[0044] Among them, the communication link established between the acquisition board and the forwarding module 31 is, for example, a wireless communication link based on a lora or ZigBee module, which has strong penetration transmission ability for short distances; specifically, the acquisition base 10 is provided with a first wireless transmission unit connected to the data of the acquisition board, and the communication base 30 is provided with a second wireless transmission unit connected to the data of the forwarding module 31. When in use, the monitoring data acquired by the acquisition board is transmitted to the forwarding module 31 via the link established by the first wireless transmission unit and the second wireless transmission unit.

[0045] The locking assembly 40 is used to lock the communication base 30 on the collection base 10 without damaging the pre-pressed sealing film, so that the communication base 30 can be stably installed, ensuring that the communication between the communication base 30 and the collection base 10 will not be disconnected during the construction process, and the effectiveness of the structure and the stability of data transmission can be maintained for a long time during the entire soft soil foundation treatment process; at the same time, it also avoids the leakage problem caused by damaging the sealing film in the traditional solution, which is conducive to the smooth progress of the construction.

[0046] Please continue reading Figure 2The collection base 10, the communication base 30 and the locking assembly 40 in the embodiment are all designed in a circular manner. Through mutual nesting and docking, the locking assembly 40 is used to lock the collection base 10 and the communication base 30, while ensuring that the pre-pressed sealing film will not be damaged. It is a mechanical floating limit locking cooperation structure.

[0047] Please combine Figure 3 and Figure 8-9 The locking assembly 40 includes a positioning plate 41 and a folding module 42 having a plurality of gates 421. A convex groove 41a having a small top opening and a large internal space is provided in the positioning plate 41. When folded, the folding module 42 can be moved up and down through the top opening of the positioning plate 41 and placed into the convex groove 41a. When the folding module 42 is unfolded, the plurality of gates 421 are circumferentially unfolded and extended to the side wall of the convex groove 41a to prevent the folding module 42 from being separated from the convex groove 41a.

[0048] The collection base 10 is configured to be connected to the positioning disk 41, and the communication base 30 is configured to be connected to the folding module 42; when in use, the collection base 10 and the positioning disk 41 are first fixedly installed on the surface of the soil, and after the surface is covered with a pre-pressed sealing film, the folding module 42 is connected to the positioning disk 41 from the upper surface of the pre-pressed sealing film, and the communication base 30 and the collection base 10 are docked while pulling without damaging the pre-pressed sealing film. Among them, the multiple monitoring units carried by the measuring tube assembly 20 of the embodiment are used to obtain vacuum data corresponding to different depth areas. This part of the data is obtained by the communication base 30 in a wireless manner and forwarded to the user terminal. The communication base 30 is locked to the collection base 10 through the locking assembly 40 to achieve a stable installation, so that the communication will not be affected by the construction site and cause the communication to be disconnected.

[0049] like Figure 3-7 As shown, the positioning plate 41 includes a positioning base plate 411, an outer annular wall 412 and a limiting top plate 413, and the limiting top plate 413 is installed on the positioning base plate 411 through the outer annular wall 412 to form a convex groove 41a; specifically, the positioning base plate 411, the outer annular wall 412 and the limiting top plate 413 can be integrally formed; wherein, a limiting groove 41b opening toward the inside is formed between the limiting top plate 413 and the positioning base plate 411, and when the folding module 42 is unfolded, a plurality of gate plates 421 are circumferentially unfolded and extend into the limiting groove 41b.

[0050] like Figure 8As shown, the folding module 42 includes a download plate 422 and an upper loading plate 423 that can rotate relative to each other, and a plurality of gate plates 421 are located between the download plate 422 and the upper loading plate 423 and are preferably arranged in a circular array; when installed, the download plate 422 contacts and keeps flush with the positioning base plate 411, and a guide groove 424 corresponding to the gate plate 421 is provided on the download plate 422, and the guide groove 424 is inclined relative to the radial direction of the positioning plate 41, and a first rotating column 425 and a second rotating column 426 are respectively provided on the upper and lower sides of the gate plate 421, and the gate plate 421 is connected to the upper loading plate 423 through the first rotating column 425, and the gate plate 421 is connected to the download plate 422 through the second rotating column 426 that can slide in the guide groove 424; wherein, when the upper loading plate 423 rotates forward or reversely, under the limit cooperation of the guide groove 424 and the second rotating column 426, the first rotating column 425 rotates by itself to allow the gate plate 421 to swing inward or outward.

[0051] In the embodiment, an upper loading plate 423, a lower loading plate 422 and a plurality of gate plates 421 are stacked up and down to form an integral structure. When an external force acts on the upper loading plate 423, the upper loading plate 423 is rotated to realize rotation relative to the lower loading plate 422. At the same time, under the limiting action of the first rotating column 425, the second rotating column 426 and the guide groove 424, the gate plate 421 is driven to swing inward or outward. When the gate plate 421 swings outward, at least one contour portion 421a thereof extends outward to enlarge the overall outer contour so that it can form a limiting fit with the convex groove 41a. Finally, the floating limiting connection fit between the folding module 42 and the positioning plate 41 is realized through the contour portion 421a.

[0052] like Figure 8-9 As shown, the locking assembly 40 further includes a movable engagement member 43; wherein the upper loading plate 423 is provided with engagement teeth 427 that rotate synchronously therewith, and the engagement teeth 427 are specifically ratchet-shaped, and when the upper loading plate 423 rotates in the reverse direction (clockwise) so that the gate plate 421 swings outward to a certain position, the engagement member 43 can engage with the engagement teeth 427 to restrict the upper loading plate 423 from rotating back to a positive position. In the embodiment, the position of the folding and unfolding module 42 can be locked by the cooperation between the engagement member 43 and the engagement teeth 427, so that the folding and unfolding module 42 can be kept in the unfolded position for a long time and firmly mounted on the positioning plate 41.

[0053] Preferably, the engaging member 43 is a swing arm that can rotate around the connecting shaft, and one end of the swing arm is provided with an engaging portion 431, which is also a tooth-shaped structure, and can form a corresponding match with the engaging teeth 427; wherein, a spring (not shown in the figure) can also be provided on the swing arm, and the spring is used to always keep the engaging portion 431 on the swing arm moving toward the engaging teeth 427. Accordingly, a component such as a pull rope can also be connected to the swing arm, and the engaging portion 431 can be separated from the engaging teeth 427 by pulling the pull rope, so that the upper loading plate 423 can rotate in the positive direction.

[0054] Please continue reading Figure 8 In the embodiment, the gate plate 421 may also be provided with a roller 428, and when the gate plate 421 swings outward, the pre-pressed sealing film is pulled by the roller 428; wherein the roller 428 may rotate when pulling the pre-pressed sealing film to avoid greater stress pulling on the pre-pressed sealing film. Further, optionally, the gate plate 421 is also provided with an elastic stopper 429, and when the gate plate 421 swings outward, the elastic stopper 429 contacts the pre-pressed sealing film before the roller 428 to provide protection for the pre-pressed sealing film.

[0055] Please continue reading Figure 2-3 A plurality of exhaust holes 414 are provided on the positioning base plate 411 and the outer ring wall 412. When the pre-pressed sealing membrane is covered with water during the construction process, the air in the convex groove 41a is discharged outward through the exhaust holes 414, so that the pre-pressed sealing membrane can be in a relatively flat and relaxed state, which is beneficial to protecting the pre-pressed sealing membrane during the locking process.

[0056] Please refer again Figure 1-2 In the embodiment, the collection base 10 and the communication base 30 are docked and matched up and down and are located in the middle of the positioning plate 41, wherein the middle of the positioning plate 41, the download plate 422 and the upload plate 423 are correspondingly provided with perforations for installation. Further, the device also includes an upper protective shell 50 and a lower protective shell 60, the positioning plate 41 is supported on the lower protective shell 60, and the collection base 10 is located in the lower protective shell 60; the communication base 30 is located in the upper protective shell 50, and the upper protective shell 50 is supported on the lower protective shell 60 through the middle connecting ring 51. Preferably, the communication base 30 can rotate relative to the upper protective shell 50, and the upload plate 423 is connected to the communication base 30, and the upper upload plate 423 is driven to rotate by rotating the communication base 30, thereby driving the folding module 42 to unfold and fold; at this time, the coupling member 43 is fixed to the upper protective shell 50.

[0057] In an optional embodiment, the upper protective shell 50 can also be rotatable relative to the positioning plate 41, for example, rotatably supported on the middle connecting ring 51, and the upper carrier plate 423 is connected to the upper protective shell 50 to drive the folding module 42 to unfold and fold by rotating the upper protective shell 50; at this time, the coupling member 43 is fixed compared to the middle connecting ring 51.

[0058] As an extension of the embodiment, the exemplary structure of the measuring tube assembly 20 is as follows Figure 10-12 As shown, in other embodiments, the measuring tube assembly 20 may also have other feasible structural forms, and the specific structural form of the measuring tube assembly 20 is not limited here.

[0059] The measuring tube assembly 20 includes a plurality of vacuum detection tubes 21 of the same length and a transfer tube 22 with a series of length specifications. Each vacuum detection tube 21 is equipped with a pressure monitoring unit 24, which is specifically a direct measurement type pressure sensor. Different vacuum detection tubes 21 are spliced ​​together at intervals up and down through the transfer tube 22, so that the plurality of pressure monitoring units 24 correspond to monitoring points in different depth areas.

[0060] The adapter tube 22 is connected to the vacuum detection tube 21 to adjust the installation depth of the vacuum detection tube 21. The adapter tube 22 can have a series of specifications with the same or different lengths to adapt to the requirements of different depth areas; the adapter tube 22 in the embodiment preferably adopts a hollow stainless steel tube, which can be manufactured in advance according to the required length.

[0061] The vacuum detection tube 21 is a cylindrical tube with a cable 25 passing through the interior. The vacuum detection tube 21 has an installation cavity 21a and a pressure detection cavity 21b. The installation cavity 21a is arranged above the pressure detection cavity 21b. The pressure sensor is installed in the installation cavity 21a and the probe of the pressure sensor extends downward into the pressure detection cavity 21b. The cable 25 is arranged in the vacuum detection tube 21 via the adapter tube 22 to supply power to the pressure sensor.

[0062] The installation cavity 21a and the pressure detection cavity 21b are preferably independent of each other and not connected; the vacuum detection tube 21 includes an upper tube body 211, a lower tube body 212 and a carrier plate 213. The upper tube body 211 provides the installation cavity 21a, and the lower tube body 212 provides the pressure detection cavity 21b. The carrier plate 213 is arranged on the upper tube body 211 or the lower tube body 212, and is used to separate the installation cavity 21a from the pressure detection cavity 21b while providing a fixed position for the pressure sensor. During installation, sealant can be applied to the probe of the pressure sensor to further strengthen the seal.

[0063] The outer wall of the pressure detection chamber 21b is provided with a plurality of vent holes 214 and a water-proof and breathable membrane wrapped around the outside of the vent holes 214. The pressure detection chamber 21b maintains pressure communication with the soil through the vent holes 214 and the water-proof and breathable membrane. To prevent the water-proof and breathable membrane from falling off during installation, the outer side of the water-proof and breathable membrane can also be wrapped with at least one layer of geotextile.

[0064] Preferably, the middle part of the lower tube body 212 is radially contracted inwardly at equal distances to form a mounting groove 215 and an upper step connection end 212a and a lower step connection end 212b located on the upper and lower sides of the mounting groove 215. The upper step connection end 212a and the lower step connection end 212b are mainly used to better form a regular structure with the upper and lower docking points to keep the size of the entire measuring tube regular. Among them, a number of vents 214 are arranged in the mounting groove 215, and the waterproof and breathable membrane and geotextile are completely wrapped in the mounting groove 215. Under such an installation structure, when the vacuum detection tube 21 is installed and pulled out of the soil for recycling, the structure at the pressure detection chamber 21b will not be damaged, which is conducive to the reuse of the equipment.

[0065] To facilitate the power supply of the pressure sensor, a three-way adapter 23 is provided on the cable 25 at each vacuum detection tube 21, and the electrical connection end of the pressure sensor is electrically connected to the cable 25 through the three-way adapter 23; correspondingly, a mounting hole 216 and an electrical connector 217 arranged at the mounting hole 216 are provided at the top of the upper tube body 211, a first perforation is provided on the carrier plate 213, and a second perforation is provided at the bottom of the lower tube body 212. The upper end of the cable 25 is led upward to the electrical connector 217, and the lower end of the cable 25 passes through the first perforation and the second perforation in turn and extends downward to be electrically connected to other cables 25; similarly, the cable 25 extending downward is also preferably quickly connected through an electrical connector such as a waterproof aviation plug.

[0066] As another extension of the embodiment, the exemplary structure of the collection base 10 and the communication base 30 is as follows: Figure 13-15 As shown, in other embodiments, the collection base 10 and the communication base 30 can also be docked and cooperate with the locking assembly 40 in other forms. The embodiment does not limit the specific structural form of the collection base 10 and the communication base 30, and only provides a corresponding structure.

[0067] The collection base 10 includes a collection base shell 11 and a first battery module 12 arranged in the inner cavity of the collection base shell 11. The collection board and the first wireless transmission unit are installed in the collection base shell 11. The first battery module 12 is electrically connected to the collection board to supply power to the first battery module 12. The collection board is electrically connected to the first wireless transmission unit and the cable 25 respectively. Preferably, the inner cavity of the collection base shell 11 is cylindrical, and the multiple batteries in the first battery module 12 are installed in the inner cavity of the collection base shell 11 in a circular array, and a columnar space is formed in the first battery module 12. The first wireless transmission unit and the collection board are installed in the columnar space, for example, through the mounting frame 13.

[0068] The communication base 30 further includes a communication base shell 32, in which the second wireless transmission module and the forwarding module 31 are both installed and electrically connected; wherein, when the data of the pressure sensor is transmitted to the acquisition board, the data is transmitted via the wireless communication link between the first wireless transmission unit and the second wireless transmission unit, and the data is sent to the designated terminal through the forwarding module 31.

[0069] The acquisition base 10 is a sealed base, which also includes a detachable top cover 13, which is a plastic top cover, and the first wireless transmission unit is preferably installed close to the inner side of the top cover 13; the communication base 30 is also a sealed base, which also includes a detachable bottom cover 33, which is also a plastic bottom cover, and the second wireless transmission unit is preferably installed close to the inner side of the bottom cover 33. The above structure can make the distance between the first wireless transmission unit and the second wireless transmission unit smaller, effectively maintaining the stability of data transmission.

[0070] Furthermore, the top of the collection base shell 11 (top cover 13) is also provided with an annular protrusion 14, and the bottom of the communication base shell 32 (bottom cover 33) is provided with an annular groove 34 corresponding to the annular protrusion 14. When the communication base 30 and the collection base 10 are docked, the annular protrusion 14 extends into the annular groove 34 to form a positioning docking fit. In the embodiment, there is a clearance fit between the annular protrusion 14 and the annular groove 34 to accommodate the pre-pressed sealing film; it should be pointed out here that the height of the annular protrusion 14 (the groove depth of the annular groove 34) is relatively shallow, and will not cause pulling on the pre-pressed sealing film, and will not damage the pre-pressed sealing film.

[0071] Optionally, the corresponding surfaces of the collection base shell 11 and the communication base shell 32 are provided with flexible anti-skid protrusions, that is, flexible anti-skid protrusions are provided on the upper surface of the top cover 13 and the lower surface of the bottom cover 33. When the collection base shell 11 and the communication base shell 32 are docked, the flexible anti-skid protrusions are squeezed and deformed to achieve anti-skid.

[0072] Further optionally, a group of magnetic parts are provided on the corresponding surfaces of the collection base shell 11 and the communication base shell 32. When the communication base 30 is docked with the collection base 10, the group of magnetic parts are attracted to each other. The group of magnetic parts can better maintain a stable connection between the collection base shell 11 and the communication base shell 32.

[0073] The communication base 30 is also provided with a charging component 70, which also supplies power to the first battery module 12 in the collection base 10 in a wireless manner, so that the collection base 10 can meet the construction needs of soft soil foundation for a long time (for example, more than one year); Figure 1-2 , Figure 13-15 The charging assembly 70 includes a solar charging module 71, a second battery module 72, a first charging coil module 73 and a second charging coil module. The solar charging module 71 is installed on the communication base shell 32, and the second battery module 72 is installed in the communication base shell 32. The second battery module 72 charges the first battery module 12 through a wireless charging module composed of a first charging coil module 73 and a second charging coil module 74; wherein the first charging coil module 73 is installed on the bottom of the communication base shell 32 and connected to the second battery module 72, and the second charging coil module is installed on the top of the collection base shell 11 corresponding to the first charging module.

[0074] Preferably, the first charging coil module 73 is mounted on the upper surface of the bottom cover 33 or is pre-installed in the bottom cover 33 , and the second charging coil module is mounted on the lower surface of the top cover 13 or is pre-installed in the top cover 13 .

[0075] Specifically, the first charging coil module 73 is correspondingly installed on the bottom cover 33 and is located on the inner side of the annular groove 34, and the second charging coil module is correspondingly installed on the top cover 13 and is located on the inner side of the annular protrusion 14. In this way, when the communication base 30 and the collection base 10 are positioned and docked, the first charging coil module 73 and the second charging coil module are aligned accordingly, which has the advantage of convenient assembly.

[0076] Correspondingly, the communication base 30 may also be provided with an extension rod 35, such as Figure 1-2 As shown, the extension rod 35 has a long length, and the solar charging module is installed on the top of the extension rod 35 so as not to be affected by the water (with a certain depth) covered on the surface of the pre-pressed sealing film. At the same time, the antenna of the forwarding module 31 is arranged on the extension rod 35, and the antenna of the forwarding module 31 is always kept above the water surface after the water covers the top of the pre-pressed sealing film.

[0077] Although the present invention has been described above through embodiments, the above embodiments are only used to exemplarily describe the feasible implementation schemes of the present invention, and are not used to limit the protection scope of the present invention. Any equivalent substitutions or changes made by those skilled in the art in accordance with the present invention should also be covered by the protection scope defined by the claims of the present invention.

Claims

1. Soft foundation vacuum automatic monitoring device, characterized by It includes a collection base, a measuring tube assembly equipped with multiple monitoring units, a communication base and a locking assembly. The collection base is placed on the soil surface corresponding to the detection hole and is located below the pre-pressed sealing film. The measuring tube assembly is installed on the collection base and extends downward into the detection hole, so that the multiple monitoring units correspond to different depth areas. The communication base is used to obtain the monitoring data of the monitoring unit by wireless means, and is installed on the soil surface corresponding to the collection base and is located above the pre-pressed sealing film; the locking assembly is used to lock the communication base on the collection base without damaging the pre-pressed sealing film; The locking assembly includes a positioning plate and a folding module with a plurality of gates, wherein a convex groove with a small top opening and a large internal space is provided in the positioning plate, and the folding module can be moved up and down through the top opening of the positioning plate and placed into the convex groove when folded, and when the folding module is unfolded, the plurality of gates are circumferentially unfolded and extended to the side walls of the convex groove to prevent the folding module from being separated from the convex groove; The collection base is configured to be connected to the positioning plate, and the communication base is configured to be connected to the folding module. When in use, the collection base and the positioning plate are first fixedly installed on the surface of the soil, and then the folding module is connected to the positioning plate from the upper surface of the pre-pressing sealing film after the surface is covered with a pre-pressing sealing film, and the communication base and the collection base are docked and matched while pulling without damaging the pre-pressing sealing film.

2. The soft foundation vacuum automatic monitoring device according to claim 1 is characterized in that: The positioning plate includes a positioning base plate, an outer annular wall and a limiting top plate, wherein the limiting top plate is installed on the positioning base plate through the outer annular wall to form the convex groove; wherein a limiting groove opening toward the inside is formed between the limiting top plate and the positioning base plate, and when the folding module is unfolded, the plurality of gate plates are circumferentially unfolded and extend into the limiting groove.

3. The soft foundation vacuum automatic monitoring device according to claim 1 is characterized in that: The folding and unfolding module further comprises a download plate and an upload plate which can rotate relative to each other, and a plurality of gate plates are located between the download plate and the upload plate; The download plate is provided with a guide groove corresponding to the gate plate, and the guide groove is inclined relative to the radial direction of the positioning plate. The upper and lower sides of the gate plate are respectively provided with a first rotating column and a second rotating column. The gate plate is connected to the upper loading plate through the first rotating column, and the gate plate is connected to the download plate through the second rotating column that can slide in the guide groove; wherein, when the upper loading plate rotates forward or reversely, under the limiting cooperation of the guide groove and the second rotating column, the first rotating column generates self-rotation to allow the gate plate to swing inward or outward.

4. The soft foundation vacuum automatic monitoring device according to claim 3 is characterized in that: The gate plate is provided with a roller, and when the gate plate swings outward, the pre-pressed sealing film is pulled by the roller; wherein, the roller can generate self-rotation when pulling the pre-pressed sealing film.

5. The soft foundation vacuum automatic monitoring device according to claim 4 is characterized in that: The gate plate is further provided with an elastic stopper, and when the gate plate swings outward, the elastic stopper contacts the pre-pressed sealing membrane before the roller contacts the pre-pressed sealing membrane to provide protection for the pre-pressed sealing membrane.

6. The soft foundation vacuum automatic monitoring device according to claim 3 is characterized in that: The positioning bottom plate and the outer ring wall are provided with a plurality of exhaust holes, and when the pre-pressed sealing membrane is covered with water during the construction process, the air in the convex groove is discharged outward through the exhaust holes.

7. The soft foundation vacuum automatic monitoring device according to claim 3 is characterized in that: The locking assembly further includes a movable engaging member, and the upper carrier plate is provided with engaging teeth that rotate synchronously therewith, wherein when the upper carrier plate rotates in the opposite direction to allow the gate plate to swing outward to a position, the engaging member can engage with the engaging teeth to limit the upper carrier plate from rotating back in the positive direction.

8. The soft foundation vacuum automatic monitoring device according to claim 3 is characterized by: The acquisition base and the communication base are butt-jointed with each other up and down and are located in the middle of the positioning plate, wherein the middle of the positioning plate, the download plate and the upload plate are correspondingly provided with perforations.

9. The soft foundation vacuum automatic monitoring device according to claim 8, characterized in that: It further comprises an upper protective shell and a lower protective shell, the positioning plate is supported on the lower protective shell, and the collection base is located in the lower protective shell; The communication base is located in the upper protective shell, and the upper protective shell is supported on the lower protective shell.

10. The soft foundation vacuum automatic monitoring device according to claim 1, characterized in that: The number of the gate plates is more than three, and the more than three gate plates are distributed in a circular array.

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