Vacuum preloading soil multi-depth integrated vacuum monitoring device

Abstract

The present invention discloses a vacuum preloading soil multi-depth integrated vacuum degree monitoring device, including a collection base, a plurality of vacuum detection tubes and a plurality of transfer tubes, the collection base is placed on the soil surface and below the preloading sealing film corresponding to the detection hole, a plurality of vacuum detection tubes are installed in the detection hole at intervals up and down, and the transfer tube is connected to the upper and lower vacuum detection tubes; the vacuum detection tube includes a columnar tube body, a pressure sensor and a cable, the columnar tube body has an installation cavity and a pressure detection cavity, the installation cavity is arranged above the pressure detection cavity, the pressure sensor is installed in the installation cavity and the probe of the pressure sensor extends downward into the pressure detection cavity, the cable is arranged in the columnar tube body to supply power to the pressure sensor; the outer wall of the pressure detection cavity is provided with a plurality of vents and a water-proof and breathable film wrapped around the outside of the vents, and the pressure detection cavity maintains pressure communication with the soil through the vents and the water-proof and breathable film. The present invention has the advantages of accurate installation position and simple construction operation.

Description

Technical Field

[0001] The invention relates to a multi-depth integrated vacuum degree monitoring device for vacuum preloading soil. 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 is mainly to bury a vacuum tube to a specified depth in the ground, and then lead out a pressure tube to penetrate a sealing membrane until it is connected to a pressure gauge. For example, Chinese patent CN108918023A discloses a vacuum degree monitoring device and method for vacuum preloading soil. The inventive device is to place a vacuum probe wrapped by a geotextile in the vacuum preloading soil or under the vacuum preloading sealing membrane, and the vacuum pressure gauge is fixed on a concrete fixing plate. The vacuum pressure gauge and the vacuum probe are connected by a pressure tube. The vacuum probes buried in the soil at different depths are used to achieve equivalent observation of the vacuum degree between the soil and the vacuum probe, thereby meeting the requirements for real-time monitoring of the vacuum degree in vacuum preloading foundation treatment.

[0004] The above-mentioned prior art solutions have the following defects: 1) Low efficiency, requiring personnel to read meters and record measurements point by point; 2) Difficult construction, each vacuum probe corresponds to a detection hole, and single-hole multi-probe installation cannot be achieved; 3) Continuous monitoring of changes in vacuum pressure cannot be achieved; 4) The sealing film is damaged and needs to be sealed, and water leakage often occurs at the damaged location. 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 multi-depth integrated vacuum degree monitoring device for vacuum preloading soil.

[0006] In order to achieve the above main purpose, the present invention discloses a multi-depth integrated vacuum degree monitoring device for vacuum preloading soil, which includes a collection base, a plurality of vacuum detection tubes and a plurality of transfer tubes. The collection base is placed on the soil surface corresponding to the detection hole and is located below the preloading sealing film. The plurality of vacuum detection tubes are installed in different depth areas in the detection hole at intervals from top to bottom. The transfer tube is connected to the upper and lower vacuum detection tubes to adjust the installation depth of the vacuum detection tubes.

[0007] The vacuum detection tube includes a columnar tube body, a pressure sensor and a cable. The columnar tube body has an installation cavity and a pressure detection cavity. The installation cavity is arranged above the pressure detection cavity. The pressure sensor is installed in the installation cavity and the probe of the pressure sensor extends downward into the pressure detection cavity. The cable is arranged in the columnar tube body to supply power to the pressure sensor. The outer wall of the pressure detection cavity is provided with a plurality of ventilation holes and a waterproof and breathable membrane wrapped around the outside of the ventilation holes. The pressure detection cavity maintains pressure communication with the soil through the ventilation holes and the waterproof and breathable membrane.

[0008] In the present invention, multiple vacuum detection tubes are installed in different depth intervals of the same detection hole with upper and lower intervals, which can directly realize the monitoring of multiple monitoring points in a single detection hole; wherein, different vacuum detection tubes are connected by transfer tubes, and the installation depth of the vacuum detection tubes can be accurately adjusted, which has the advantages of precise installation position and simple construction operation.

[0009] In addition, a pressure sensor is provided in the vacuum detection tube, and the vacuum degree in the pressure detection chamber is directly measured by the pressure sensor. This is a direct measurement. Compared with the traditional method of using a pressure catheter, the measurement data is more accurate.

[0010] According to a specific embodiment of the present invention, the columnar tube body includes an upper tube body, a lower tube body and a carrier plate. The upper tube body provides an installation cavity, and the lower tube body provides a pressure detection cavity. The carrier plate is arranged on the upper tube body or the lower tube body, and is used to separate the installation cavity from the pressure detection cavity while providing a fixed position for the pressure sensor.

[0011] According to a specific embodiment of the present invention, a three-way adapter is provided on the cable, and the electrical connection end of the pressure sensor is electrically connected to the cable through the three-way adapter; wherein, a mounting hole and an electrical connector arranged at the mounting hole are provided on the top of the upper tube body, a first through hole is provided on the carrier plate, and a second through hole is provided on the bottom of the lower tube body. The upper end of the cable is led upward to the electrical connector, and the lower end of the cable passes through the first through hole and the second through hole in sequence and extends downward to be electrically connected to other cables.

[0012] According to a specific embodiment of the present invention, the middle portion of the lower tube body is radially contracted inwardly at equal distances to form a mounting groove, a plurality of vents are arranged in the mounting groove, and a waterproof and breathable membrane is wound in the mounting groove.

[0013] According to a specific embodiment of the present invention, it further includes a communication base, which is placed on the soil surface and located above the pre-pressed sealing film, and the communication base is docked with the collection base to avoid the pre-pressed sealing film from being damaged;

[0014] The collection base includes a collection base shell and a battery module, a collection board and a first wireless transmission unit arranged in the inner cavity of the collection base shell. The battery module is electrically connected to the collection board, and the collection board is electrically connected to the first wireless transmission unit and the cable respectively.

[0015] The communication base includes a communication base shell and a second wireless transmission unit and a forwarding module arranged in the communication base shell, and the second wireless transmission module and the forwarding module are electrically connected; wherein, when the data of the pressure sensor is transmitted to the acquisition board, the data is transmitted via the 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.

[0016] In the above technical solution, the collection base and the communication base are installed by upper and lower docking, and the two are respectively located on the upper and lower sides of the pre-pressed sealing film. When docking, there is no need to pass through the sealing film to achieve the connection between the collection base and the communication base. The communication base can be used to intuitively determine the test point position, which has the advantage of strong practicality.

[0017] At the same time, the measurement data of the pressure sensor is transmitted wirelessly to the forwarding module for forwarding, eliminating the need for manual on-site measurement, saving time and effort. In addition, even when the surface of the on-site pre-pressing sealing membrane is covered with deep water, the data transmission can still be kept smooth and stable, which has the advantage of continuously monitoring the changes in vacuum pressure during the pre-pressing process.

[0018] According to a specific embodiment of the present invention, the inner cavity of the collection base shell is cylindrical, and a plurality of batteries in the battery module are installed in the inner cavity of the collection base shell in a circumferential array.

[0019] According to a specific embodiment of the present invention, it further includes a charging component, which includes a solar charging module, a charging battery module, a first charging coil module and a second charging coil module. The solar charging module is installed on the communication base shell, the charging battery module is installed in the communication base shell, the first charging coil module is installed on the bottom of the communication base shell and connected to the charging battery module, and the second charging coil module is installed on the top of the collection base shell corresponding to the first charging coil module.

[0020] According to a specific embodiment of the present invention, an annular protrusion is provided on the top of the collection base shell, and an annular groove corresponding to the annular protrusion is provided on the bottom of the communication base shell. When the communication base and the collection base are docked, the annular protrusion extends into the annular groove to form a positioning docking fit.

[0021] According to a specific embodiment of the present invention, the corresponding surfaces of the collection base shell and the communication base shell are provided with flexible anti-skid protrusions.

[0022] According to a specific embodiment of the present invention, a group of magnetic parts are provided on the corresponding surfaces of the collection base shell and the communication base shell, and the group of magnetic parts are attracted when the communication base and the collection base are docked.

[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 vacuum degree monitoring device of the present invention;

[0025] Figure 2 It is a partial structural diagram of the vacuum degree monitoring device of the present invention;

[0026] Figure 3 is a three-dimensional cross-sectional view of a vacuum detection tube;

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

[0028] Figure 5 This is an exploded view of the vacuum detection tube and the transfer tube;

[0029] Figure 6 It is an exploded anatomical view of the acquisition base and the communication base;

[0030] Figure 7 This is an exploded view of the collection base;

[0031] Figure 8 This is an exploded view of the communication base;

[0032] Fig. 9 It is a partial structural diagram of a first extended embodiment of the vacuum degree monitoring device of the present invention;

[0033] Fig.10 It is an overall structural diagram of a second extended embodiment of the vacuum degree monitoring device of the present invention;

[0034] Fig.11 It is an exploded view of the acquisition base, communication base and locking assembly;

[0035] Fig.12 It is a structural diagram of the positioning plate and the folding and unfolding module;

[0036] Fig.13 yes Fig.12 A top view of

[0037] Fig.14 yes Fig.13 Another position state diagram of ;

[0038] Fig.15 It is a three-dimensional cross-sectional view of the positioning plate and the folding and unfolding module;

[0039] Fig.16 yes Fig.15 A front view of

[0040] Fig.17 It is the decomposition structure diagram of the folding module;

[0041] Fig.18 It is the structural diagram of the upload board. DETAILED DESCRIPTION

[0042] 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.

[0043] The vacuum preloading soil multi-depth integrated vacuum degree monitoring device of the embodiment of the present invention is as follows Figure 1-2 As shown, it includes a collection base 10, a plurality of vacuum detection tubes 20 and a plurality of transfer tubes 30; wherein, the collection base 10 is installed corresponding to the detection hole, and is specifically placed directly on the soil surface and located below the pre-pressed sealing film. The collection base 10 itself has a certain weight. In order to maintain the stability of the installation, it can be fixed for a second time by, for example, installing a bracket or partially burying it.

[0044] The vacuum detection tube 20 is equipped with a pressure sensor 24, and the vacuum degree at the specified depth position is directly measured by the pressure sensor 24; wherein, multiple vacuum detection tubes 20 are installed in different depth areas in the detection hole at intervals up and down, and then the vacuum degree of the specified depth area is monitored, and multiple pressure sensors 24 are installed simultaneously in a single detection hole, so as to directly realize the monitoring of multiple monitoring points in a single detection hole.

[0045] The adapter tube 30 is connected to the upper and lower vacuum detection tubes 20 to adjust the installation depth of the vacuum detection tubes 20. The adapter tube 30 can have a series of specifications with the same or different lengths to adapt to the requirements of different depth areas; the adapter tube 30 in the embodiment preferably adopts a hollow stainless steel tube, which can be manufactured in advance according to the required length.

[0046] The vacuum detection tube 20 of the embodiment is as follows Figure 3-5As shown, it further includes a columnar tube body 21 and a cable 22. The columnar tube body 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 24 is installed in the installation cavity 21a and the probe of the pressure sensor 24 extends downward into the pressure detection cavity 21b. The cable 22 is arranged in the columnar tube body 21 via the adapter tube 30 or directly to supply power to the pressure sensor 24.

[0047] The installation cavity 21a and the pressure detection cavity 21b are preferably independent of each other and not connected; illustratively, the columnar tube 21 includes an upper tube 211, a lower tube 212 and a carrier 213, the upper tube 211 provides the installation cavity 21a, the lower tube 212 provides the pressure detection cavity 21b, and the carrier 213 is arranged on the upper tube 211 or the lower tube 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 24. During installation, sealant can be applied to the probe of the pressure sensor 24 to further strengthen the seal.

[0048] 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.

[0049] Preferably, the middle portion of the lower tube body 212 is radially contracted inward (preferably at equal distances) to form a mounting groove portion 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 portion 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 maintain the regularity of the size of the entire tube body. Among them, a plurality of vents 214 are preferably arranged in the mounting groove portion 215 in a circular array or uniformly distributed manner, and the waterproof and breathable membrane and the geotextile are completely wrapped in the mounting groove portion 215. Under such a structure, when the vacuum detection tube 20 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.

[0050] To facilitate the power supply of the pressure sensor 24, a three-way adapter 23 is provided on the cable 22 at each vacuum detection tube 20 in the embodiment, and the electrical connection end of the pressure sensor 24 is electrically connected to the cable 22 through the three-way adapter 23; correspondingly, a mounting hole 216 and an electrical connector 217 arranged at the mounting hole 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 22 located in the vacuum detection tube 20 is led upward to the electrical connector 217, and the lower end passes through the first perforation and the second perforation in turn and extends downward to be electrically connected to other cables 22; similarly, the cable 22 extending downward is also preferably quickly connected to the cable 22 in the adapter tube 30 through an electrical connector such as a waterproof aviation plug.

[0051] In some embodiments, a mechanism or module for data transmission may be provided on the top of the collection base 10. This mechanism or module is installed on the top of the pre-pressed sealing film and is connected to the data of the collection board in the collection base 10 by wired means; this method requires destroying the sealing film. As a preferred embodiment, please continue to refer to Figure 1-2 The device also includes a communication base 40, which is used to wirelessly communicate with the collection base 10 to obtain monitoring data; wherein the communication base 40 is placed on the soil surface and located above the pre-pressing sealing film, and the communication base 40 is docked with the collection base 10 to avoid the pre-pressing sealing film from being damaged.

[0052] like Figure 6-8 As shown, the collection base 10 includes a collection base shell 11 and a battery module 12, a collection board and a first wireless transmission unit arranged in the inner cavity of the collection base shell 11. The battery module 12 is electrically connected to the collection board to supply power to the battery module 12, and the collection board is electrically connected to the first wireless transmission unit and the cable 22 respectively.

[0053] The communication base 40 includes a communication base shell 41, a second wireless transmission unit and a forwarding module 42. The second wireless transmission module and the forwarding module 42 are both installed in the communication base shell 41 and are electrically connected. When the data of the pressure sensor 24 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 42.

[0054] Exemplarily, the wireless communication link between the first wireless transmission unit and the second wireless transmission unit is specifically a wireless communication link based on lora or ZigBee modules to achieve short-range penetration transmission, and the transmission mode of the forwarding module 42 is, for example, 4G mode to achieve long-distance wireless transmission. Under such a communication link, there is no need to pass through the sealing film to achieve the connection between the collection base 10 and the communication base 40. Even if the surface of the pre-pressing sealing film is covered with deep water on site, the data transmission can still be kept smooth and stable, which has the advantage of continuously monitoring the changes in vacuum pressure during the pre-pressing process; at the same time, the communication base 40 can also be used to intuitively determine the location of the test point, which has the advantage of strong practicality.

[0055] Specifically, a support plate 111 is provided at the bottom of the acquisition base shell 11, and the support plate 111 is used to provide stable support; the inner cavity of the acquisition base shell 11 is cylindrical, and multiple batteries in the battery module 12 are installed in the inner cavity of the acquisition base shell 11 in a circumferential array, and a columnar space is formed in the battery module 12, and the first wireless transmission unit and the acquisition board are installed in the columnar space, for example, through the first bracket 13; wherein, the acquisition base 10 is a sealed base, which also includes a detachable top cover 14, the top cover 14 is a plastic top cover, and the first wireless transmission unit is preferably installed adjacent to the inner side of the top cover 14; the communication base 40 is also a sealed base, which also includes a detachable bottom cover 43, the bottom cover 43 is also a plastic bottom cover, and the second wireless transmission unit is preferably installed adjacent to the inner side of the bottom cover 43. The above structure can make the first wireless transmission unit and the second wireless transmission unit have a smaller distance, effectively maintaining the stability of data transmission.

[0056] Furthermore, the top of the collection base shell 11 is provided with an annular protrusion 15, and the bottom of the communication base shell 41 is provided with an annular groove 44 corresponding to the annular protrusion 15. When the communication base 40 and the collection base 10 are docked, the annular protrusion 15 extends into the annular groove 44 to form a positioning docking fit. In the embodiment, there is a clearance fit between the annular protrusion 15 and the annular groove 44 to accommodate the pre-pressed sealing film; it should be pointed out here that the height of the annular protrusion 15 (the groove depth of the annular groove 44) is relatively shallow, and will not cause pulling on the pre-pressed sealing film, and will not damage the pre-pressed sealing film.

[0057] Optionally, the corresponding surfaces of the collection base shell 11 and the communication base shell 41 may be further provided with flexible anti-skid protrusions, that is, flexible anti-skid protrusions are provided on the upper surface of the top cover 14 and the lower surface of the bottom cover. When the collection base shell 11 and the communication base shell 41 are docked, the flexible anti-skid protrusions are squeezed and deformed to achieve anti-skid.

[0058] Further optionally, a group of magnetic parts are provided on the corresponding surfaces of the collection base shell 11 and the communication base shell 41. When the communication base 40 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 41.

[0059] The communication base 40 is provided with a charging assembly 50, which also supplies power to the 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); please refer to Figure 1-2 , Figure 6 and Figure 8 The charging assembly 50 includes a solar charging module 51, a charging battery module 52, a first charging coil module 53 and a second charging coil module 54. The solar charging module 51 is installed on the communication base shell 41, the charging battery module 52 is installed in the communication base shell 41, the first charging coil module 53 is installed on the bottom of the communication base shell 41 and is connected to the charging battery module 52, and the second charging coil module 54 is installed on the top of the collection base shell 11 corresponding to the first charging coil module 53.

[0060] Specifically, the first charging coil is installed on the bottom cover and is located on the inner side of the annular groove 44, and the second charging coil is installed on the top cover 14 and is located on the inner side of the annular protrusion 15. In this way, when the communication base 40 and the collection base 10 are positioned and docked, the first charging coil module 53 and the second charging coil module 54 are aligned accordingly, which has the advantage of convenient assembly.

[0061] The communication base 40 may also be provided with an extension rod 45, such as Fig. 9 As shown, the extension rod 45 has a long length, and the solar charging module 51 is installed on the top of the extension rod 45 so as not to be affected by the water (with a certain depth) covering the surface of the pre-pressed sealing film. At the same time, the antenna of the forwarding module 42 is arranged on the extension rod 45, and the antenna of the forwarding module 42 is always kept above the water surface after the water covers the top of the pre-pressed sealing film.

[0062] As an extension of this embodiment, a locking assembly 60 using a mechanical floating method may also be provided, and the overall structure is as follows: Fig.10 As shown, the locking assembly 60 is used to lock the communication base 40 on the collection base 10 without damaging the pre-pressed sealing film, so that the communication base 40 can be stably installed, and the communication base 40 can be prevented from being moved due to human factors or abnormal factors, thereby causing data loss. It ensures that the communication between the communication base 40 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 are 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.

[0063] like Fig.11 As shown, the collection base 10, the communication base 40 and the locking assembly 60 in the embodiment are all designed in a circular manner. Through mutual nesting, docking, etc., the locking assembly 60 is used to lock the collection base 10 and the communication base 40, while ensuring that the pre-pressed sealing film will not be damaged. It is a mechanical floating limit locking cooperation structure.

[0064] The locking assembly 60 includes a positioning disk 61 and a folding module 62 having a plurality of gate plates 621. A convex groove 61a having a small top opening and a large internal space is provided in the positioning disk 61. When folded, the folding module 62 can be moved up and down through the top opening of the positioning disk 61 and placed into the convex groove 61a. When the folding module 62 is unfolded, the plurality of gate plates 621 are circumferentially unfolded and extended to the side walls of the convex groove 61a to limit the folding module 62 from detaching from the convex groove 61a.

[0065] The collection base 10 is configured to be connected to the positioning plate 61, and the communication base 40 is configured to be connected to the folding module 62. When in use, the collection base 10 and the positioning plate 61 are first fixedly installed on the soil surface, and after the surface is covered with a pre-pressed sealing film, the folding module 62 is matched and connected with the positioning plate 61 from the upper surface of the pre-pressed sealing film. The communication base 40 and the collection base 10 are connected by pulling without damaging the pre-pressed sealing film. The communication base 40 is locked to the collection base 10 by the locking assembly 60 to achieve a stable installation, so that the communication will not be disconnected due to the influence of the construction site.

[0066] like Figure 12-16 As shown, the positioning plate 61 includes a positioning base plate 611, an outer annular wall 612 and a limiting top plate 613, and the limiting top plate 613 is installed on the positioning base plate 611 through the outer annular wall 612 to form a convex groove 61a; specifically, the positioning base plate 611, the outer annular wall 612 and the limiting top plate 613 can be integrally formed; wherein, a limiting groove 61b opening toward the inside is formed between the limiting top plate 613 and the positioning base plate 611, and when the folding module 62 is unfolded, a plurality of gate plates 621 are circumferentially unfolded and extend into the limiting groove 61b.

[0067] like Fig.17As shown, the folding and unfolding module 62 further includes a download plate 622 and an upper loading plate 623 that can rotate relative to each other, and a plurality of gate plates 621 are located between the download plate 622 and the upper loading plate 623 and are preferably arranged in a circular array; when installed, the download plate 622 is in contact with the positioning base plate 611 and remains flush with each other, and a guide groove 6221 corresponding to the gate plate 621 is provided on the download plate 622, and the guide groove 6221 is inclined relative to the radial direction of the positioning plate 61, and the upper and lower sides of the gate plate 621 are respectively provided with The first rotating column 6211 and the second rotating column 6212, the gate plate 621 is connected to the upper loading plate 623 through the first rotating column 6211, and the gate plate 621 is connected to the lower loading plate 622 through the second rotating column 6212 that can slide in the guide groove 6221; wherein, when the upper loading plate 623 rotates forward or reversely, under the limiting cooperation of the guide groove 6221 and the second rotating column 6212, the first rotating column 6211 produces self-rotation and allows the gate plate 621 to swing inward or outward.

[0068] In the embodiment, an upper loading plate 623, a lower loading plate 622 and a plurality of gate plates 621 are stacked up and down to form an integral structure. The upper loading plate 623 can be rotated by applying an external force to the upper loading plate 623 to rotate. At the same time, the gate plate 621 is driven to swing inward or outward under the limiting action of the first rotating column 6211, the second rotating column 6212 and the guide groove 6221. When the gate plate 621 swings outward, at least one contour portion 621a thereof extends outward to enlarge the overall outer contour so that it can form a limiting fit with the limiting groove 61b. Finally, the floating limiting connection fit between the folding module 62 and the positioning plate 61 is achieved through the contour portion 621a.

[0069] like Figure 17-18 As shown, the locking assembly 60 further includes a movable engagement member 63; wherein the upper loading plate 623 is provided with engagement teeth 624 that rotate synchronously therewith, and the engagement teeth 624 are specifically ratchet-shaped, and when the upper loading plate 623 rotates in the reverse direction (clockwise) so that the gate plate 621 swings outward to a certain position, the engagement member 63 can engage with the engagement teeth 624 to limit the upper loading plate 623 from rotating forward and returning to a certain position. In the embodiment, the position of the folding and unfolding module 62 can be locked by the cooperation formed between the engagement member 63 and the engagement teeth 624, so that it can be kept in the unfolded position for a long time and firmly mounted on the positioning plate 61.

[0070] Preferably, the engaging member 63 is a swing arm that can rotate around the connecting shaft 64, and one end of the swing arm is provided with an engaging portion 631, which is also a tooth-shaped structure, and can form a corresponding match with the engaging teeth 624; 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 631 on the swing arm moving toward the engaging teeth 624. Accordingly, a component such as a pull rope can also be connected to the swing arm, and the engaging portion 631 can be separated from the engaging teeth 624 by pulling the pull rope, so that the upper loading plate 623 can rotate in the positive direction.

[0071] Please continue reading Fig.17 In the embodiment, the gate plate 621 may also be provided with a roller 625, which is specifically arranged at the contour portion 621a. When the gate plate 621 swings outward, the pre-stressed sealing film is pulled by the roller 625; wherein the roller 625 can rotate when pulling the pre-stressed sealing film to avoid a large stress pull on the pre-stressed sealing film. Further, optionally, an elastic stopper 626 is further provided on the gate plate 621. When the gate plate 621 swings outward, the elastic stopper 626 contacts the pre-stressed sealing film before the roller 625 to provide protection for the pre-stressed sealing film.

[0072] Please continue reading Fig.11 A plurality of exhaust holes 614 are provided on the positioning base plate 611 and the outer ring wall 612. When the pre-pressed sealing membrane is covered with water during construction, the air in the convex groove 61a is discharged outward through the exhaust holes 614, 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.

[0073] Please refer again Figure 10-11 In the embodiment, the collection base 10 and the communication base 40 are docked and matched up and down and are located in the middle of the positioning plate 61, wherein the middle of the positioning plate 61, the download plate 622, and the upload plate 623 are correspondingly provided with perforations to facilitate installation. Further, the device also includes an upper protective shell 70 and a lower protective shell 80, the positioning plate 61 is supported on the lower protective shell 80, and the collection base 10 is located in the lower protective shell 80; the communication base 40 is located in the upper protective shell 70, and the upper protective shell 70 is supported on the positioning plate 61. Preferably, the upper protective shell 70 can rotate relative to the positioning plate 61, and the upload plate 623 is connected to the upper protective shell 70, so as to drive the folding module 62 to unfold and fold by rotating the upper protective shell 70.

[0074] 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. Vacuum preloading soil multi-depth integrated vacuum degree monitoring device, characterized by It includes a collection base, a communication base, a plurality of vacuum detection tubes and a plurality of transfer tubes. The collection base is placed on the soil surface corresponding to the detection hole and is located below the pre-pressing sealing film. The communication base is placed on the soil surface and is located above the pre-pressing sealing film. The communication base and the collection base are docked and matched to avoid the pre-pressing sealing film from being damaged. The plurality of vacuum detection tubes are installed in different depth areas in the detection hole at intervals up and down. The transfer tube is connected to the upper and lower vacuum detection tubes to adjust the installation depth of the vacuum detection tubes. The vacuum detection tube includes a columnar tube body, a pressure sensor and a cable, wherein the columnar tube body has an installation cavity and a pressure detection cavity, wherein the installation cavity is arranged above the pressure detection cavity, the pressure sensor is installed in the installation cavity and the probe of the pressure sensor extends downward into the pressure detection cavity, and the cable is arranged in the columnar tube body to supply power to the pressure sensor; wherein the outer wall of the pressure detection cavity is provided with a plurality of vents and a water-proof and breathable membrane wrapped around the outside of the vents, and the pressure detection cavity maintains pressure communication with the soil through the vents and the water-proof and breathable membrane; The columnar tube body comprises an upper tube body, a lower tube body and a carrier plate, the upper tube body provides the installation cavity, the lower tube body provides the pressure detection cavity, and the carrier plate is arranged on the upper tube body or the lower tube body, and is used to separate the installation cavity from the pressure detection cavity while providing a fixing position for the pressure sensor; A three-way adapter is provided on the cable, and the electrical connection end of the pressure sensor is electrically connected to the cable through the three-way adapter; wherein, a mounting hole and an electrical connector arranged at the mounting hole are provided on the top of the upper tube body, a first through hole is provided on the carrier plate, and a second through hole is provided on the bottom of the lower tube body, the upper end of the cable is led upward to the electrical connector, and the lower end of the cable passes through the first through hole and the second through hole in sequence and extends downward to be electrically connected to the other cables.

2. The vacuum preloading soil multi-depth integrated vacuum degree monitoring device according to claim 1 is characterized in that: The middle part of the lower tube body is contracted inwardly along the radial direction at equal distances to form a mounting groove, a plurality of the vent holes are arranged in the mounting groove, and the waterproof and breathable membrane is wound in the mounting groove.

3. The multi-depth integrated vacuum degree monitoring device for vacuum preloading soil according to claim 1 is characterized in that: The acquisition base includes an acquisition base shell, and a battery module, an acquisition board, and a first wireless transmission unit arranged in an inner cavity of the acquisition base shell, wherein the battery module is electrically connected to the acquisition board, and the acquisition board is electrically connected to the first wireless transmission unit and the cable respectively; The communication base includes a communication base shell and a second wireless transmission unit and a forwarding module arranged in the communication base shell, and the second wireless transmission unit and the forwarding module are electrically connected; wherein, when the data of the pressure sensor is transmitted to the acquisition board, the data is transmitted via the 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.

4. The multi-depth integrated vacuum degree monitoring device for vacuum preloading soil according to claim 3 is characterized in that: The inner cavity of the collection base shell is cylindrical, and the multiple batteries in the battery module are installed in the inner cavity of the collection base shell in a circumferential array.

5. The multi-depth integrated vacuum degree monitoring device for vacuum preloading soil according to claim 3 is characterized in that: It further includes a charging component, which includes a solar charging module, a charging battery module, a first charging coil module and a second charging coil module. The solar charging module is installed on the communication base shell, the charging battery module is installed in the communication base shell, the first charging coil module is installed on the bottom of the communication base shell and connected to the charging battery module, and the second charging coil module is installed on the top of the collection base shell corresponding to the first charging coil module.

6. The vacuum preloading soil multi-depth integrated vacuum degree monitoring device according to claim 3 is characterized in that: The top of the collection base shell is provided with an annular protrusion, and the bottom of the communication base shell is provided with an annular groove corresponding to the annular protrusion. When the communication base and the collection base are docked, the annular protrusion extends into the annular groove to form a positioning docking fit.

7. The multi-depth integrated vacuum degree monitoring device for vacuum preloading soil according to claim 3 is characterized in that: The surfaces corresponding to each other in the collection base shell and the communication base shell are provided with flexible anti-skid protrusions.

8. The multi-depth integrated vacuum degree monitoring device for vacuum preloading soil according to claim 3 is characterized in that: A group of magnetic parts are arranged on the surfaces corresponding to each other in the collection base shell and the communication base shell, and the group of magnetic parts are attracted to each other when the communication base is docked with the collection base.

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