Trenchless pushing stress detection device and method

By integrating reaction walls, cylinders, piston rods and other structures with friction power generation components, real-time monitoring and data transmission of non-excavation top-push force detection devices is realized, solving the accuracy and compatibility problems of existing devices, and improving construction safety and engineering quality.

CN120274927APending Publication Date: 2025-07-08SHANGHAI CONSTRUCTION MANAGEMENT VOCATIONAL & TECHNICAL COLLEGE (SHANGHAI REAL ESTATE SCHOOL OF SHANGHAI GARDEN SCHOOL SHANGHAI GARDEN SCHOOL)
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Patent Information

Application Number
CN202510616337.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-14
Publication Date
2025-07-08

AI Technical Summary

Technical Problem

The existing non-excavation overpushing force detection devices have accuracy and functional limitations, compatibility problems, complex operation, great influence on environmental factors, and lack of unified standards, resulting in inaccurate and unreliable detection results.

Method used

The frictional power structure of the reaction wall, cylinder, piston rod, thrust front end, lock, measuring tube, pressure detection component, sensor module, flexible support plate, liquid crystal fluid, copper film and polytetrafluoroethylene film are adopted. Combined with the reflection of the window light signal, the visualization and real-time monitoring of the top thrust distribution are realized, and the integration of the sensor module and the camera component is realized to realize the synchronous acquisition and transmission of stress and strain data and real-time images.

Benefits of technology

Real-time monitoring and visualization of the top thrust distribution is realized, ensuring the stability and environmental adaptability of the device in long-term operations, reducing the risks of biased load and jamming, and improving the safety and engineering quality of non-excavation top thrust operations.

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Abstract

The invention provides a trenchless pushing stress detection device and method, which are applied to the technical field of pipe-jacking pushing force measurement devices, and the key points of the technical scheme are that the device comprises a reaction wall and a pipe end thick plate; uniformly distributed cylinder barrels are arranged at one end of the reaction wall, piston rods are slidably connected to the inner walls of the cylinder barrels, jacking front ends are fixedly connected to one ends of the piston rods, and first lock catches are arranged at one ends of outer rings of the jacking front ends; compared with the prior art, the device has the technical effects that the pressure detection assembly utilizes the cooperative deformation of the flexible support plate and the liquid crystal fluid, and combines the optical signal reflection principle of a window, so that the visual and real-time monitoring of the jacking force distribution is realized, and the problem that the response of a traditional detection device to a complex stress state is lagged is solved; the power generation assembly adopts a friction electrification structure of a copper film and a polytetrafluoroethylene film, and can continuously supply power to a storage battery and a super capacitor without an external power supply, so that the stability and environmental adaptability of the device in long-term operation are ensured.
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Description

Technical Field

[0001] The present invention relates to the technical field of pipe jacking thrust measurement devices, and particularly to a trenchless jacking force detection device and method. Background Art

[0002] A trenchless jacking force detection device patent refers to a patent applied for a device specifically used in trenchless construction technology to detect the force condition during the jacking process. This kind of patent usually involves multiple technical fields such as machinery, mechanics, and electronics, aiming to improve the safety and efficiency of trenchless construction. Trenchless technology is a construction method that, without excavating the ground, uses advanced equipment and technical means to detect, repair, replace, and lay underground pipelines, cables, etc. Trenchless technology has many advantages, such as a small construction site, low noise, little impact on the surrounding environment, and the ability to operate deep underground, which is an incomparable advantage of open-cut pipe laying.

[0003] This device usually consists of a sensor, a data acquisition module, a data transmission module, a data processing module, etc. The sensor is used to monitor the force condition of the pipe jacking machine during the propulsion process in real time. The data acquisition module is responsible for collecting the data of the sensor and transmitting the data to the data processing module through the data transmission module for further analysis and processing.

[0004] Currently, Chinese invention with the publication number CN116718302A discloses a pipe jacking force measurement device and method, including the front end of the jacking. Specifically, it includes a measurement device composed of a measurement pipe, a connecting pipe, and a force transmission pipe, a lock fixing pipe, a data acquisition box, a data transmission module, and a visual data cloud platform; the measurement pipe is connected to the connecting pipe and is also connected to the force transmission pipe. The connecting pipe is connected to the front end of the jacking and the measurement pipe. The force transmission pipe is connected to the measurement pipe. The lock fixing pipe and the connecting pipe are used to connect the entire measurement device to the front end of the jacking and the piston rod. The data acquisition box is used to monitor the process data, store it, and wirelessly transmit it to the data transmission module. The data transmission module is used to transmit the data signal to the visual data cloud platform, and the visual data cloud platform is used to record, analyze, and process the data. The present invention can directly measure the jacking force during the jacking process.

[0005] There is an existing pipe jacking force measurement device and method. However, the trenchless technology has developed rapidly, but the update speed of the force detection device has not kept pace with the technological development, resulting in limitations in the accuracy and function of some devices. There are compatibility problems between detection devices of different brands and models, which may lead to inability to communicate data or inaccurate analysis results. Some trenchless jacking force detection devices are complex to operate and require professional personnel to operate accurately, increasing the construction difficulty and cost. Environmental factors such as soil conditions and groundwater levels have a great impact on the accuracy and stability of the detection device, which may lead to inaccurate detection results or inability to work stably. At present, there is a lack of unified standards and specifications for trenchless jacking force detection devices in the market, resulting in uneven product quality and difficulty in ensuring the accuracy and reliability of detection results. Summary of the Invention

[0006] The purpose of the present invention is to provide a trenchless jacking force detection device and method, and its advantage is to solve the problem of the lag in response of traditional detection devices to complex stress states.

[0007] To achieve the above object and other related objects, the present invention provides the following technical solutions:

[0008] A trenchless jacking force detection device includes a reaction wall and a pipe end thick plate; one end of the reaction wall is provided with evenly distributed cylinders, the inner wall of the cylinders is slidably connected with piston rods, one end of the piston rods is fixedly connected with a jacking front end, and one end of the outer circle of the jacking front end is provided with first latches. Both the front and rear ends of the first latches are fixedly connected with fixing plates, the other ends of the first latches are provided with second latches, both the front and rear ends of the second latches are fixedly connected with fixing plates, a measuring pipe is arranged inside the second latches, and one end of the measuring pipe is threadedly connected with the pipe end thick plate. A pressure detection component is arranged on the outer wall of the measuring pipe, a sensor module is arranged through and evenly distributed at one end of the pipe end thick plate, a clamping piece is arranged on the outer wall of the measuring pipe, a power generation component is arranged through one end of the clamping piece, a limiting groove is opened through and inside one end of the clamping piece, and an inclined ring is fixedly connected to the outer side of one end of the clamping piece.

[0009] Through the above technical solution, the sensor module includes a micro pressure sensor, a strain sensor, etc. The micro pressure sensor adopts the piezoresistive effect principle. When the surface of the pipe jacking is subjected to soil pressure, the resistance value of the piezoresistive resistor inside the sensor changes, and the magnitude of the pressure can be calculated by measuring the change in the resistance value.

[0010] In an embodiment of the present invention, the pressure detection component includes two windows, both of which are fixedly connected to the outer circle of the measuring pipe. A hose is fixedly connected between the measuring pipes. One end of the measuring pipe is provided through and fixedly connected with evenly distributed connecting pipes, and a sealing cover is threadedly connected to the inner wall of the connecting pipes.

[0011] Through the above technical solution, liquid crystal fluid can be fed between the flexible support plates through the sealing cover and the connecting pipe.

[0012] In an embodiment of the present invention, the outer wall of the measuring pipe is fixedly connected with evenly distributed flexible support plates, and the other end of the flexible support plate is fixedly connected with the inner wall of the hose. There is evenly distributed liquid crystal fluid between the flexible support plates.

[0013] Through the above technical solution, liquid crystal molecules change their orientation under pressure and show color. When the pressure is released, the molecules will return to their original arrangement state and the color will also return.

[0014] In an embodiment of the present invention, the power generation assembly includes a copper thin film. One end of the inner wall of the copper thin film is engaged with the clamping member, and a polytetrafluoroethylene thin film is arranged on the outer wall of the copper thin film, and the outer wall of the polytetrafluoroethylene thin film is engaged with the clamping member.

[0015] Through the above technical solution, when the jacking pipe contacts the soil and generates relative movement during the trenchless jacking process, the soil and the film surface rub against each other, causing the two material surfaces to carry equal amounts of opposite charges respectively, forming an electrostatic field.

[0016] In an embodiment of the present invention, the top of the other end of the clamping member penetrates and is fixedly connected with a storage battery, and the bottom of the other end of the clamping member penetrates and is provided with a storage module.

[0017] Through the above technical solution, the storage module locally backs up data to prevent key information from being lost due to signal interruption.

[0018] In an embodiment of the present invention, bolts penetrate through the top of the fixed plate and are threadedly connected, and nuts are threadedly connected to the bottom of the outer ring of the bolts, and the nuts are rotatably connected to the fixed plate.

[0019] Through the above technical solution, align the fixed plates of the first lock and the second lock, use bolts and nuts to penetrate the fixed plate and tighten them to ensure that the lock is firmly locked, forming a conduction structure for jacking force.

[0020] In an embodiment of the present invention, a camera assembly is provided at the other end of the outer wall of the measuring pipe.

[0021] Through the above technical solution, the camera image assists in judging the jacking deviation, and the jacking speed or the synchronism of the hydraulic cylinders is adjusted in combination with the force data.

[0022] In an embodiment of the present invention, a Bluetooth module is fixedly connected to one side of the other end of the clamping member, and a supercapacitor is fixedly connected to the other side of the other end of the clamping member.

[0023] Through the above technical solution, the real-time data is wirelessly transmitted to the on-site industrial control computer or remote terminal via the Bluetooth module, and the jacking force curve, stress distribution nephogram, etc. are displayed.

[0024] In an embodiment of the present invention, a limiting groove is penetrated and opened on the inner side of one end of the clamping member, and an inclined ring is fixedly connected to the outer side of one end of the clamping member.

[0025] In an embodiment of the present invention, the polytetrafluoroethylene film and the copper film can be clamped through the limiting groove.

[0026] The present invention also provides a non-excavation jacking force detection method, which is implemented based on the above detection device and includes the following steps:

[0027] S1. Connect the front end of jacking with the measuring pipe

[0028] Connect the front end of jacking with the measuring pipe through the first lock and the second lock, align the fixing plates of the first lock and the second lock, penetrate the fixing plates with bolts and nuts and tighten them to ensure that the locks are firmly fastened, forming a conduction structure for jacking force. One end of the measuring pipe is threadedly connected with the pipe end thick plate and tightened to the sealed state to ensure that the sensor module is facing the internal detection area of the measuring pipe;

[0029] S2. Install the pressure detection component and the power generation component

[0030] Install the clamping member on the outer wall of the measuring pipe, align the limiting groove with the preset position of the measuring pipe, and the inclined ring faces outward to guide the force direction during jacking. Clamp the copper film and the polytetrafluoroethylene film in the power generation component installation groove of the clamping member, and use the principle of triboelectrification to supply power to the device. Check the pressure detection component: the viewing window is fixed to the outer ring of the measuring pipe, the hose is connected to adjacent measuring pipes, and the flexible support plate supports the liquid crystal fluid inside the hose to ensure uniform pressure conduction. Sealed connecting pipe: Tighten the sealing cover at the end of the connecting pipe to prevent external impurities from entering the pressure detection area;

[0031] S3. Initialize the electronic module

[0032] The storage battery and the supercapacitor are pre-charged through the power generation component, the Bluetooth module is turned on to the pairing mode, the storage module clears the historical data, and is ready to receive real-time detection signals.

[0033] As described above, a non-excavation jacking force detection device and method of the present invention have the following beneficial effects:

[0034] 1. The present invention utilizes the cooperative deformation of the flexible support plate and the liquid crystal fluid through the pressure detection component, and combines the optical signal reflection principle of the viewing window to realize the visualization and real-time monitoring of the top thrust distribution, solving the problem of the lag response of traditional detection devices to complex stress states; the power generation component adopts the triboelectric structure of copper thin film and polytetrafluoroethylene thin film, which can continuously supply power to the battery and supercapacitor without an external power supply, ensuring the stability and environmental adaptability of the device during long-term operation.

[0035] 2. Through the integration of the sensor module, camera component and wireless transmission module, the present invention realizes the synchronous acquisition and two-way transmission of stress, strain data and real-time images during the jacking process, providing comprehensive data support for the precise regulation of the construction process, effectively reducing risks such as eccentric load and pipe jamming, and improving the safety and engineering quality of the trenchless jacking operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the cylinder barrel of an embodiment of the present invention;

[0037] Figure 2 is a schematic structural diagram of the hose of an embodiment of the present invention;

[0038] Figure 3 is a schematic structural diagram of the sensor module of an embodiment of the present invention;

[0039] Figure 4 is a schematic structural diagram of the flexible support plate of an embodiment of the present invention;

[0040] Figure 5 is a schematic structural diagram of the clamping member of an embodiment of the present invention;

[0041] Figure 6 is a schematic structural diagram of the inclined ring of an embodiment of the present invention;

[0042] Figure 7 is a schematic structural diagram of the sealing cover of an embodiment of the present invention.

[0043] Reference numerals: 1, reaction wall; 2, cylinder barrel; 3, piston rod; 4, front end of jacking; 5, first lock; 6, second lock; 7, fixing plate; 8, bolt; 9, nut; 10, camera component; 11, hose; 12, clamping member; 13, polytetrafluoroethylene thin film; 14, copper thin film; 15, thick plate at pipe end; 16, sensor module; 17, measuring pipe; 18, flexible support plate; 19, connecting pipe; 20, battery; 21, supercapacitor; 22, Bluetooth module; 23, storage module; 24, inclined ring; 25, limiting groove; 26, viewing window; 27, sealing cover. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0045] Please refer to Figures 1 to 7 . It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope for the implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope for the implementation of the present invention.

[0046] Embodiment 1

[0047] Please refer to Figures 1 to 7 , the present invention provides a non-excavation jacking force detection device, including a reaction wall 1 and a pipe end thick plate 15;

[0048] At one end of the reaction wall 1, there are evenly distributed cylinder barrels 2. A piston rod 3 is slidably connected to the inner wall of the cylinder barrel 2. One end of the piston rod 3 is fixedly connected to a jacking front end 4. At one end of the outer ring of the jacking front end 4, there are first latches 5. Both the front and rear ends of the first latch 5 are fixedly connected to a fixing plate 7. At the other end of the first latch 5, there are second latches 6. Both the front and rear ends of the second latch 6 are fixedly connected to a fixing plate 7. A measuring pipe 17 is arranged on the inner wall of the second latch 6, and one end of the measuring pipe 17 is threadedly connected to the pipe end thick plate 15. A pressure detection component is arranged on the outer wall of the measuring pipe 17. One end of the pipe end thick plate 15 penetrates and is provided with evenly distributed sensor modules 16. A clamping member 12 is arranged on the outer wall of the measuring pipe 17. One end of the clamping member 12 penetrates and is provided with a power generation component. One end of the inner side of the clamping member 12 penetrates and is provided with a limiting groove 25. One end of the outer side of the clamping member 12 is fixedly connected to an inclined ring 24. The micro strain sensor utilizes the strain effect of the strain gauge. When the jacked pipe deforms, the resistance of the strain gauge will also change, thereby obtaining strain data.

[0049] The pressure detection component includes two windows 26, both of which are fixedly connected to the outer ring of the measuring tube 17. A hose 11 is fixedly connected between the measuring tubes 17. One end of the measuring tube 17 penetrates and is fixedly connected with uniformly distributed connecting tubes 19. The inner wall of the connecting tube 19 is threadedly connected with a sealing cap 27. The outer wall of the measuring tube 17 is fixedly connected with uniformly distributed flexible support plates 18, and the other end of the flexible support plate 18 is fixedly connected with the inner wall of the hose 11. Uniformly distributed liquid crystal fluid is arranged between the flexible support plates 18. The liquid crystal flow inside the flexible support plate 18 can be observed through the window 26 and the camera assembly.

[0050] The power generation component includes a copper thin film 14. One end of the inner wall of the copper thin film 14 is engaged with the clamping member 12. A polytetrafluoroethylene thin film 13 is arranged on the outer wall of the copper thin film 14, and the outer wall of the polytetrafluoroethylene thin film 13 is engaged with the clamping member 12. The copper thin film 14 and the polytetrafluoroethylene thin film 13 are closely attached to the outer surface of the pipe end thick plate 15. When the pipe end thick plate 15 contacts the soil and generates relative movement during the trenchless jacking process, the soil and the film surface rub against each other, causing the two material surfaces to carry equal amounts of opposite charges respectively, forming an electrostatic field.

[0051] The top of the other end of the clamping member 12 penetrates and is fixedly connected with a storage battery 20, and the bottom of the other end of the clamping member 12 penetrates and is provided with a storage module 23; the electricity generated by the power generation component can be stored through the storage battery 20, and data can be stored through the storage module 23.

[0052] Bolts 8 penetrate and are threadedly connected to the top of the fixing plate 7, and nuts 9 are threadedly connected to the bottom of the outer ring of the bolts 8, and the nuts 9 are rotatably connected to the fixing plate 7; the buckle can be locked through the bolts 8 and the nuts 9.

[0053] The other end of the outer wall of the measuring tube 17 is provided with a camera assembly 10; the front soil body can be observed through the camera assembly 10.

[0054] One side of the other end of the clamping member 12 is fixedly connected with a Bluetooth module 22, and the other side of the other end of the clamping member 12 is fixedly connected with a supercapacitor 21; the Bluetooth module 22 can wirelessly transmit data to the data receiving terminal on the ground.

[0055] Embodiment 2

[0056] The present invention also provides a trenchless jacking force detection method, which is realized based on the above detection device and includes the following steps:

[0057] S1. Connect the front end of the jacking 4 to the measuring tube 17

[0058] Connect the front end 4 of the jacking to the measuring tube 17 through the first locking buckle 5 and the second locking buckle 6. Align the fixing plates 7 of the first locking buckle 5 and the second locking buckle 6, and use bolts 8 and nuts 9 to pass through the fixing plate 7 and tighten them to ensure that the locking buckles are firmly latched, forming a conduction structure for the jacking force. One end of the measuring tube 17 is threadedly connected to the thick plate 15 at the tube end and tightened to the sealed state to ensure that the sensor module 16 is facing the internal detection area of the measuring tube 17;

[0059] S2. Install the pressure detection component and the power generation component

[0060] Install the clamping member 12 on the outer wall of the measuring tube 17, align the limiting groove 25 with the preset position of the measuring tube 17, and tilt the ring 24 outward to guide the force direction during the jacking process. Snap the copper thin film 14 and the polytetrafluoroethylene thin film 13 into the power generation component installation groove of the clamping member 12, and use the principle of triboelectrification to supply power to the device. Check the pressure detection component: The viewing window 26 is fixed to the outer ring of the measuring tube 17, the hose 11 connects adjacent measuring tubes 17, and the flexible support plate 18 supports the liquid crystal fluid inside the hose 11 to ensure uniform pressure conduction. The sealed connecting tube 19: Tighten the sealing cap 27 at the end of the connecting tube 19 to prevent external impurities from entering the pressure detection area;

[0061] S3. Initialize the electronic module

[0062] The battery 20 and the supercapacitor 21 are pre-charged through the power generation component, the Bluetooth module 22 is turned on in the pairing mode, and the storage module 23 clears the historical data and is ready to receive real-time detection signals.

[0063] Brief description of the usage process: When in use, fix the reaction wall 1 at the starting end of the jacking operation to ensure that the axis of the cylinder barrel 2 is consistent with the jacking direction. Fix the front end of the piston rod 3 to the front end 4 of the jacking, connect the hydraulic pump station, and debug the telescopic function of the cylinder barrel to ensure that the jacking force is evenly transmitted to the measuring tube 17. Install the thick plate 15 at the tube end at the front end of the jacking pipeline, and the sensor module 16 passes through the thick plate and is exposed to collect data such as axial pressure and torque during jacking. The camera assembly 10 is aligned with the jacking direction to monitor the state of the soil in front and the liquid crystal fluid in the viewing window in real time. The data is synchronously transmitted to an external display device. The hydraulic system drives the piston rod 3 to jack in, and the jacking force is transmitted to the measuring tube 17 through the front end of the jacking and the locking structure. The pressure detection component works: The flexible support plate 18 on the outer wall of the measuring tube deforms with the force, squeezing the internal liquid crystal fluid, and indirectly detecting the distribution of the jacking force through the change of the reflected light signal of the viewing window 26; The sensor module 16 synchronously collects the stress and strain data at the tube end. The power generation component operates: When the clamping member 12 vibrates slightly or rubs with the measuring tube, the copper thin film 14 and the polytetrafluoroethylene thin film 13 generate electricity by friction to charge the battery and the supercapacitor to ensure continuous power supply for the device.

[0064] In summary, through the cooperation of the flexible support plate and the liquid crystal fluid by the pressure detection component of the present invention, combined with the optical signal reflection principle of the window, the visualization and real-time monitoring of the top thrust distribution are realized, and the problem of the lag response of the traditional detection device to complex stress states is solved; the power generation component adopts the triboelectric structure of copper thin film and polytetrafluoroethylene thin film, which can continuously supply power to the battery and supercapacitor without an external power supply, ensuring the stability and environmental adaptability of the device during long-term operation. In addition, the integration of the sensor module, camera component and wireless transmission module realizes the synchronous acquisition and two-way transmission of stress, strain data and real-time images during the jacking process, providing comprehensive data support for the precise control of the construction process, effectively reducing risks such as eccentric load and pipe jamming, and improving the safety and engineering quality of the trenchless jacking operation.

[0065] The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A trenchless jacking force detection device, comprising a reaction wall (1) and a pipe end thick plate (15); characterized in that: One end of the reaction wall (1) is provided with evenly distributed cylinders (2). A piston rod (3) is slidably connected to the inner wall of the cylinder (2). One end of the piston rod (3) is fixedly connected to a jacking front end (4). One end of the outer circle of the jacking front end (4) is provided with a first lock (5). Both the front and rear ends of the first lock (5) are fixedly connected to fixing plates (7). The other end of the first lock (5) is provided with a second lock (6). Both the front and rear ends of the second lock (6) are fixedly connected to fixing plates (7). A measuring tube (17) is arranged on the inner wall of the second lock (6), and one end of the measuring tube (17) is threadedly connected to a tube end thick plate (15). A pressure detection component is arranged on the outer wall of the measuring tube (17). One end of the tube end thick plate (15) penetrates and is provided with evenly distributed sensor modules (16). A clamping member (12) is arranged on the outer wall of the measuring tube (17), and a power generation component penetrates through one end of the clamping member (12).

2. The non-excavation jacking force detection device according to claim 1, wherein: The pressure detection component includes two windows (26). The windows (26) are fixedly connected to the outer circle of the measuring tube (17). A hose (11) is fixedly connected between the measuring tubes (17). One end of the measuring tube (17) penetrates and is fixedly connected with evenly distributed connecting tubes (19). A sealing cover (27) is threadedly connected to the inner wall of the connecting tube (19).

3. The non-excavation jacking force detection device according to claim 1, characterized in that: Evenly distributed flexible support plates (18) are fixedly connected to the outer wall of the measuring tube (17), and the other end of the flexible support plate (18) is fixedly connected to the inner wall of the hose (11). Evenly distributed liquid crystal fluids are arranged between the flexible support plates (18).

4. The non-excavation jacking force detection device according to claim 1, characterized in that: The power generation component includes a copper thin film (14). One end of the inner wall of the copper thin film (14) is engaged with the clamping member (12). A polytetrafluoroethylene thin film (13) is arranged on the outer wall of the copper thin film (14), and the outer wall of the polytetrafluoroethylene thin film (13) is engaged with the clamping member (12).

5. The non-excavation jacking force detection device according to claim 1, characterized in that: The top of the other end of the clamping member (12) penetrates and is fixedly connected with a storage battery (20). The bottom of the other end of the clamping member (12) penetrates and is provided with a storage module (23).

6. The non-excavation jacking force detection device according to claim 1, wherein: Bolts (8) penetrate through and are threadedly connected to the tops of the fixing plates (7). Nuts (9) are threadedly connected to the bottoms of the outer circles of the bolts (8), and the nuts (9) are rotatably connected to the fixing plates (7).

7. The non-excavation jacking force detection device according to claim 1, characterized in that: A camera assembly (10) is arranged at the other end of the outer wall of the measuring tube (17).

8. The non-excavation jacking force detection device according to claim 1, characterized in that: A Bluetooth module (22) is fixedly connected to one side of the other end of the clamping member (12), and a supercapacitor (21) is fixedly connected to the other side of the other end of the clamping member (12).

9. The non-excavation jacking force detection device according to claim 1, characterized in that: A limiting groove (25) is penetrated and opened on the inner side of one end of the clamping member (12), and an inclined ring (24) is fixedly connected to the outer side of one end of the clamping member (12).

10. A trenchless jacking force detection method, characterized in that: The method is implemented based on the detection device according to any one of claims 1-9, and includes the following steps: S1. Connect the jacking front end (4) to the measuring tube (17) Connect the front end of the jacking (4) to the measuring tube (17) through the first latch (5) and the second latch (6). Align the fixing plates (7) of the first latch (5) and the second latch (6), and use bolts (8) and nuts (9) to penetrate the fixing plates (7) and tighten them to ensure that the latches are firmly engaged, forming a conduction structure for the jacking force. One end of the measuring tube (17) is threadedly connected to the thick plate at the tube end (15) and tightened to the sealed state to ensure that the sensor module (16) is facing the internal detection area of the measuring tube (17). S2. Install the pressure detection component and the power generation component Install the clamping member (12) on the outer wall of the measuring tube (17), align the limiting groove (25) with the preset position of the measuring tube (17), and make the inclined ring (24) face outwards to guide the force direction during the jacking process. Snap the copper thin film (14) and the polytetrafluoroethylene thin film (13) into the power generation component installation groove of the clamping member (12) to supply power to the device using the principle of triboelectrification. Check the pressure detection component: The viewing window (26) is fixed to the outer ring of the measuring tube (17), the flexible hose (11) connects adjacent measuring tubes (17), and the flexible support plate (18) supports the liquid crystal fluid inside the flexible hose (11) to ensure uniform pressure conduction. Sealed connecting tube (19): Tighten the sealing cap (27) at the end of the connecting tube (19) to prevent external impurities from entering the pressure detection area. S3. Initialize the electronic module The battery (20) and the supercapacitor (21) are pre-charged through the power generation component. The Bluetooth module (22) is turned on to the pairing mode, and the storage module (23) clears the historical data to prepare to receive real-time detection signals.

Citation Information

Patent Citations

  • Device and method for measuring jacking force of jacking pipe

    CN116718302A