144 results about "Tunnel boring machine" patented technology

This invention discloses a real-time processing and database entry method for tunnel boring machine (TBM) construction time-series data based on integrated batch processing. The method includes: acquiring the original time-series data of the TBM and its associated original ring numbers; performing standardization processing based on a pre-built semantic rule base to obtain standardized records; identifying the TBM's operating status and determining the target ring number based on the standardized records and a judgment threshold; performing differentiated data cleaning strategies on the standardized records according to the operating status and evaluating the cleaning results to obtain a comprehensive quality score; and routing the standardized records to matching processing channels based on dynamic diversion conditions including the comprehensive quality score and arrival delay, and writing them into the time-series database using the target ring number as a reference. This invention overcomes the defects of missed physical anomaly detection and reference misalignment, improving the operational condition reproduction accuracy of the entered data.

This application provides a tunnel boring machine (TBM) and its control method, relating to the field of engineering machinery technology. The TBM includes: a cutterhead; the cutterhead is disposed at one end of a shield; at least one advance support assembly is disposed within the shield, and the advance support assembly has multiple support members; the advance support assembly is configured to, depending on the surrounding rock condition in front of the cutterhead, selectively extend the multiple support members from within the shield to above the cutterhead to form a temporary support zone, or drive the support members to retract from above the cutterhead back into the shield. According to the embodiments of this application, active support for the surrounding rock above the cutterhead is achieved through the advance support assembly based on the surrounding rock condition, and the machine does not need to be stopped during support, enabling continuous and rapid traversal of deformable surrounding rock sections, thus improving the TBM's adaptability to complex terrain, tunneling capacity, and tunneling efficiency.

This invention relates to the field of tunnel construction technology, specifically to a method, medium, and equipment for judging and correcting abnormal strain signals in tunnel boring machines (TBMs). The method includes the following steps: simulating the mechanical response of the main drive structure under theoretically rated external load conditions; selecting strain measurement point locations based on the simulation results; deploying strain sensors at the selected locations on the actual TBM, and then performing threshold judgment on the strain signals collected by the strain sensors. If the signal of the strain measurement point channel exceeds the threshold, the channel is deemed to be faulty; if the signal of the strain measurement point channel does not exceed the threshold, a secondary judgment is performed using the same channel of its symmetrical measurement points; and a mapping model between equipment operating parameters and strain signals is established based on historical data from the strain measurement point channels. This invention avoids the interruption of operation of the digital twin system due to signal loss, greatly improving the system's continuous operation capability in harsh engineering environments.

1. The name of the design product: high and low voltage pre-installed substation (for shield machine). 2. The use of the design product: a special power distribution cabinet designed for shield machine, which includes high voltage, transformer and low voltage three parts, among which the high voltage includes 12KV / 24KV system and the low voltage includes 400V / 690V system, which can be compatible with TN and low voltage system. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view 1. 5. The submitted view can clearly express, and the elevation view is omitted.

This utility model relates to the field of tunneling equipment technology, specifically providing a shell cutter system and tunnel boring machine (TBM) with online wear monitoring and compensation. The system includes a shell cutter guide rail, a shell cutter assembly, a sealing box, a wear monitoring device, a locking mechanism, and a drive mechanism. The shell cutter guide rail is fixedly connected to the spokes of the cutterhead. The sealing box is located inside the spokes of the cutterhead and fixedly connected to the shell cutter guide rail. The shell cutter assembly is embedded in the shell cutter guide rail and can move along it. The wear monitoring device is located on the shell cutter assembly. The drive mechanism is located inside the sealing box and connected to the shell cutter assembly. The locking mechanism is located between the shell cutter assembly and the shell cutter guide rail, and the locking mechanism cooperates with the drive mechanism to achieve wear compensation for the shell cutter assembly. The shell cutter system provided by this utility model can monitor the wear of the shell cutter assembly in real time and automatically compensate for its wear, ensuring cutting accuracy, extending service life, and reducing construction costs.

Novel hybrid tunnel boring methods, systems, and apparatuses are described. Example hybrid methods integrate (a) thermal processing, e.g., preconditioning and / or thermal spallation (which may be used as pre-treatment), and (b) mechanical processing while boring tunnels in rock and other formations. Thermal processing and mechanical processing may be used alternatively or simultaneously. For example, the preconditioning may use thermal energy to induce thermal shock and weaken the rock (e.g., cause expansion stress, micro-fractures, thermal spallation, etc.). This preconditioning changes the relevant properties of the rock relative to the additional (e.g., mechanical) excavation, including, among other things, effective compressive stress, abrasion properties, and hardness. This preconditioned rock can therefore be efficiently removed using mechanical drilling tools, resulting in, for example, faster boring speeds, reduced tool wear, enhanced precision, and longer deployment lengths (e.g., in comparison to conventional TBM and especially MTBM approaches).

The utility model discloses a kind of cutterheads of tunnel boring machine, including several cutting hob, cutterhead main body, limit block and locking block, cutting hob two sides center of circle is provided with connecting shank, and first shank abutting surface is equipped in connecting shank lower side;Cutterhead main body is equipped with several installation parts, installation part has upper surface and lower surface and the installation through-hole of through installation part, the installation groove of ''L'' type is opened in the opposite two side walls of installation through-hole, and the opening of installation groove extends to lower surface, connecting shank is detachably inserted in installation groove, and first shank abutting surface is abutted in the inner wall of installation groove away from upper surface;Limit block and locking block are set in installation groove and respectively abutted in connecting shank front and back two sides.

This application relates to a method, system, equipment, and medium for intelligent control of gas concentration in the tunnel boring machine (TBM) environment. The method includes: acquiring a three-dimensional reconstructed reduced-order model of the gas concentration field; acquiring multi-source monitoring data of the tunneling environment and standardizing it to obtain a standardized input dataset; correcting the gas concentration field state vector based on the standardized input dataset and the model to obtain a corrected gas concentration field state vector; performing multi-step prediction of the gas concentration change trend based on the corrected gas concentration field state vector to obtain a gas concentration risk evolution sequence for future periods; and optimizing the control parameters of the ventilation and exhaust equipment based on the future gas concentration risk evolution sequence and the operating constraints of the ventilation and exhaust equipment to obtain a control command sequence. This method enables three-dimensional global perception and proactive forward control of gas concentration, solving the problems of control lag and blind spots.

This application discloses a control method and system for assembling tapered bore bearings using a hydraulic system, relating to the field of intelligent manufacturing technology for high-end equipment. Addressing three core technical challenges—distortion in displacement measurement due to hydraulic nut deformation, blind spots in process status monitoring, and lack of active safety protection under severe faults—this invention employs a deformation-isolated, bridge-type rigid reference to obtain the bearing's true axial displacement. Based on pressure and displacement data, it calculates the instantaneous equivalent press-fit stiffness and identifies the idle stroke, contact and interference establishment, and critical assembly completion stages according to the evolution trajectory, implementing phased adaptive closed-loop control. It executes fault diagnosis and endpoint judgment for mechanical jamming and hydraulic leakage in parallel with the highest hardware interrupt priority, achieving millisecond-level active protection and precise capture of the optimal endpoint. This significantly improves the assembly accuracy and safety of heavy-duty bearings and is applicable to the assembly of key components in engineering machinery such as tunnel boring machines and large cranes.

This invention discloses a gas detection device for the excavation chamber of a tunnel boring machine (TBM), relating to the field of gas detection technology for TBM excavation chambers. It includes a TBM body and an excavation chamber partition. A gas detection mechanism is fixedly connected to the partition. This gas detection device draws in gas through a suction system via a first flexible hose, a first connecting pipe, a transmission box, a transmission pipe, and an intake pipe. A filter screen in the intake frame first filters dust. The transmission mechanism drives the transmission pipe and the intake frame to rotate, achieving a wide-range suction and expanding the detection range. The filtered gas enters the gas detector for real-time detection, reducing detection delay and saving time for safe operation, thus improving production safety. Furthermore, the drive mechanism rotates the mounting box 90° periodically, alternating the intake air intake and further ensuring comprehensive detection. Simultaneously, the filter screen filters dust, reducing its impact on the gas detector and improving detection stability.

This invention discloses a device and method for detecting the flow properties of grout injected behind the tunnel wall, relating to the field of new material testing. In this invention, a tunnel boring machine (TBM) is simulated in tunnel construction using a TBM propulsion simulation system. Transparent soil grout containing tracer particles is injected into the grouting gap between a tunnel wall model and a segment model using a grouting device. Both the tunnel wall model and the segment model are made of transparent material. A laser emitter then emits a laser beam into the grouting gap. When the laser beam hits the transparent soil grout, the tracer particles within the grout scatter the laser beam. An axial visual detection unit and a radial visual detection unit respectively track the scattered laser beam from the radial and axial directions of the tunnel wall model. By coordinating the laser emitter, axial visual detection unit, and radial visual detection unit, the tracer particles are tracked, and the flow direction and flowability of the transparent soil grout are determined by the flow of the tracer particles.

The present application relates to the geological advanced detection field, in order to improve the prediction accuracy, provide the geological advanced prediction method and system of fusion TBM excavation parameter, by establishing the correction relation of excavation parameter and geophysical parameter, based on the correction of geophysical parameter based on excavation parameter, the detection accuracy of complex stratum can be significantly improved;Promote stage with excavation seismic wave signal and electromagnetic wave signal, step or change sword stage can carry out tomography based on active source seismic wave signal, detection operation and construction process are completely synchronous, construction efficiency is improved by 20%, based on seismic wave tomography+electromagnetic wave coherence method double parameter joint inversion, combined with TBM parameter correction, the geophysical multiple solution is significantly reduced.

This utility model discloses a cutterhead holder for testing tunnel boring machine cutterheads, comprising: a base with a guide rail; a mounting seat fixedly mounted on the base, with guide shafts mounted at least at the upper two corners; a sliding frame with a first slider at the bottom and its upper corners slidably fitted onto the guide shafts; a cutterhead rotatably mounted on the front side of the sliding frame; a cutterhead seat detachably and fixedly mounted on the front side of the cutterhead; a rotary drive mechanism mounted on the sliding frame and connected to the cutterhead drive mechanism; and a sliding drive mechanism for driving the sliding frame to slide. The guide rail and the first slider form a reliable sliding fit, providing stable bottom support and guidance for the sliding frame; the guide shafts at at least two corners of the upper end of the mounting seat pass through the corners of the sliding frame, forming an upper constraint on the sliding frame. This dual-fit structure of bottom sliding support and upper guide limit significantly improves the stability of the sliding frame in an upright state, effectively preventing instability and tilting.

This invention relates to the field of tunnel engineering, specifically to a tunnel construction method, comprising the following steps: simultaneously excavating at both ends of the tunnel using both TBM (Tunnel Boring Machine) and drill-and-blast methods to form a TBM tunnel section and a drill-and-blast tunnel section; excavating the TBM tunnel section and the drill-and-blast tunnel section to both ends of the through tunnel section; firstly constructing a dismantling chamber using the drill-and-blast method, and then constructing a TBM through section to the dismantling chamber using the TBM method; dismantling the TBM tunneling machine in the dismantling chamber and transporting it out of the tunnel, thus completing the tunnel construction. This invention, through this simultaneous construction method at both ends, can effectively improve the overall excavation efficiency of extra-long tunnels, thereby significantly shortening the construction period of extra-long tunnels.

This invention discloses an automatic stepping device for a tunnel boring machine and its usage method, belonging to the field of tunnel construction technology. It includes a front sliding plate, a push-pull hydraulic mechanism, and a rear sliding plate connected in sequence. The front sliding plate has a symmetrically arranged arc-shaped top plate above its first base plate, and the first base plate has a first through groove in which a wedge-shaped buckle is embedded. The rear sliding plate has a buckle groove on its second base plate. This invention, employing the aforementioned automatic stepping device and its usage method for a tunnel boring machine, achieves space optimization, reduces tunnel cross-section requirements, and improves stepping efficiency. This makes the empty-push stepping process of the tunnel boring machine more continuous, simple, and rapid. Furthermore, its simple and reusable structural design reduces production and maintenance costs.

The application relates to the field of TBM (Tunnel Boring Machine) driving temporary support, in particular to a TBM temporary support extension structure and a using method thereof. In view of the problems of limited support range and low space utilization of the temporary support extension structure in the prior art, the following scheme is provided, which comprises a driving cutter head, a protective shield, a main beam, a first-stage support, a second-stage support, a first telescopic hydraulic cylinder and a second telescopic hydraulic cylinder. The first-stage support is rotationally connected with the protective shield, the second-stage support is slidably assembled on the first-stage support, the first telescopic hydraulic cylinder and the second telescopic hydraulic cylinder are cooperatively matched, the rotation of the first-stage support and the unfolding and contraction actions of the second-stage support are realized, the structure can pass through a narrow space in a contracted state, and a large-area support surface is formed after unfolding, thereby solving the problems of limited support range and poor adaptability of the traditional support. The hydraulic cylinders are cooperatively matched to realize rapid extension and positioning, the application is suitable for complex geological conditions such as mine tunnels, sufficient time is reserved for anchor support operation, and the efficiency of roadway driving is effectively improved.

This invention discloses a method for optimizing the design of complex equipment based on a hybrid adaptive sampling surrogate model. This method divides the design space into several Voronoi polygons controlled by sample points. Three indices—leave-one-out error, local nonlinearity, and polygon region size—are used to evaluate the importance of each sample point region. An entropy-weighted distance method is used to select the most suitable sensitive region for adding points. A learning function based on error estimation is then combined to determine new sampling points. This iterative update constructs a high-precision surrogate model, establishing a mapping relationship between design parameters and optimization objectives, thereby solving the design optimization problem. This invention innovatively proposes a multi-index adaptive weight allocation method to select sensitive sample regions and proposes a novel learning function to determine the location of added points. This method can construct a high-precision surrogate model using fewer sample points and can be used for the optimization design of complex equipment, including but not limited to tunnel boring machines.

This invention relates to the field of tunnel boring machine (TBM) construction technology, and particularly to a method for correcting deviation and an adjustment mechanism for a TBM, comprising: positioning the jack mechanism and deploying sensors before construction; detecting the deflection angle value α; controlling the extension of the telescopic rotating shaft to release the rotation restriction on the jack wheel; calculating the extension correction value for each jack; based on the extension correction value data of each jack, controlling each jack to extend and retract independently to restore the jack wheel to the center position, i.e., the deflection angle α returns to zero; and controlling the telescopic rotating shaft to retract axially to lock and restrict the rotation of the jack wheel. This invention achieves active adjustment of the TBM's attitude. During deviation correction, the telescopic rotating shaft first disengages the limit card from the limit groove, releasing the rotation restriction on the wheel, and quantitatively calculates the extension correction value required for each jack. Combined with the angle sensor, a closed-loop control is formed to quantitatively adjust the deflection angle.

The application discloses a tunnel boring machine main bearing rolling body abnormal damage identification method and system, relates to the field of abnormal damage identification, and comprises the following steps: constructing a training set containing multiple samples based on historical vibration monitoring data; inputting the samples in the training set into a current probe Q network as current state vectors in sequence to obtain a current final decision variable; storing the current state vector and the current final decision variable as an experience in an experience replay pool; extracting the experience from the experience replay pool, inputting the experience into a current anchor point Q network to calculate a current target value, updating network parameters of the current probe Q network according to the current target value, and synchronously updating network parameters of the current anchor point Q network; and identifying the damage state of a new sample according to the probe Q network after multiple rounds of training. Through the cooperation of the probe Q network and the anchor point Q network and the calculation mechanism of the immediate utility value, the identification ability of the main bearing rolling body sparse damage in an extreme non-balanced scene is significantly improved.

This application discloses a TBM synchronous grouting method and grouting device mounted on a tunnel boring machine (TBM) trolley, applicable to the field of underground engineering construction technology. The method includes: determining the starting number of grouting rings and controlling the grouting device to move to the corresponding ring position to generate a grouting sequence; constructing a backwall void evolution model based on the grouting position to predict the optimal control trajectory; real-time monitoring of grouting pressure and shield tail grease pressure and setting a safe pressure difference threshold; determining a grout leakage state when the difference between the measured grouting pressure and the shield tail grease pressure exceeds the safe pressure difference threshold; and filling the grouting hole according to the current grouting pressure and measured grout flow rate, when the pressure reaches a preset upper limit and the flow rate drops below a threshold value set for the flow rate, and automatically switching to the next grouting hole according to the grouting sequence. This application combines dual-threshold filling judgment and automatic hole position switching to achieve intelligent closed-loop construction, shortening the construction period and reducing the risks of bias pressure and leakage.

The application discloses a TBM construction supporting device, which comprises a ring-shaped air bag, which is sleeved on a tunnel boring machine girder and is filled with high-pressure gas; an arc-shaped steel, which is hollow inside and is provided with a spiral steel wire inside; a mechanical hand sequentially pushes a plurality of arc-shaped steels into the gap between the ring-shaped air bag and surrounding rock, so that the plurality of arc-shaped steels are connected with each other to form a ring, and the ring-shaped air bag is moved forward after the installation of the arc-shaped steels; and an arc-shaped steel mesh, which is sequentially pushed by the mechanical hand into the gap between the ring-shaped air bag and surrounding rock and is connected with each other to form a ring after the installation of the arc-shaped steel mesh; wherein a grouting hole is arranged on the arc-shaped steel, and a grouting device grouts the hollow inside of the arc-shaped steel through the grouting hole on the arc-shaped steel, so that the inside of the arc-shaped steel is filled with concrete slurry. The device can conveniently and efficiently support the surrounding rock after tunneling, and the supporting structure is not only high in supporting strength, but also convenient to assemble.

To efficiently and safely remove deposits from cutter heads used in shield tunneling and pipe jacking methods. [Solution] A cleaning method according to one embodiment cleans the cutter head of a tunnel boring machine that excavates the ground to form a tunnel shaft, and includes a first step of arranging a cleaning device in the tunnel shaft that includes a rod with a flow channel formed inside, a monitor provided at the tip of the rod for spraying cleaning liquid supplied through the flow channel, and a work machine for moving the rod linearly and rotating it; a second step of moving the rod linearly with the work machine so that the monitor protrudes from the front surface of the cutter head through an opening in the cutter head; and a third step of rotating the rod with the work machine while the monitor is protruding from the front surface, and spraying cleaning liquid from the monitor toward the front surface to clean any deposits on the front surface.

This invention relates to the field of tunnel boring machine (TBM) construction technology and discloses an intelligent prediction method for surface settlement considering unquantifiable parameters during TBM tunneling. The method includes: selecting a main cross-section to be predicted and historical auxiliary cross-sections with approximate unquantifiable parameters based on spatial proximity; constructing a dual-branch joint architecture for the main and auxiliary cross-sections, and training it using a neural network with shared network weights through deep learning to obtain an intelligent prediction model for surface settlement; and obtaining predicted settlement data for the main cross-section based on the intelligent prediction model. By constructing a dual-branch joint architecture for the main and auxiliary cross-sections and using deep learning with shared network weights, an intelligent prediction model for surface settlement with good generalization ability is obtained. This indirectly considers unquantifiable parameters and uses reverse reasoning to obtain accurate predicted surface settlement data, improving the predictability and safety of TBM construction.

This invention relates to the field of waste heat and muck treatment technology for tunnel boring machines (TBMs), and particularly to a muck treatment device and method utilizing the waste heat of the TBM cutterhead. The device structure includes a TBM cutterhead, a soil chamber located behind the cutterhead, and a heat transfer medium circulation system between the cutterhead and the soil chamber. This system collects heat generated by the cutterhead cutting and the TBM motor, and transfers it to the soil chamber to heat and dry the muck collected after cutting. A screw conveyor is located behind the soil chamber, and the TBM motor is electrically connected to a speed control module. This invention provides a muck treatment device and method utilizing the waste heat of the TBM cutterhead, enabling the recovery and utilization of tunneling waste heat and efficient reduction of muck volume through the use of TBM waste heat and cutterhead speed.

The utility model discloses a kind of torque transmission device and tunnel boring machine, solve the uneven stress of anti-twist block under complex tunneling working condition in prior art, the problem of insufficient reliability of torque transmission device. The utility model torque transmission device, for by hinged front and hinged rear part constitute hinged structure, including located in hinged front anti-twist block and located in hinged rear part active type adjusting assembly, the rear end of anti-twist block is formed cantilever structure into hinged rear part, active type adjusting assembly is located respectively in the upper and lower sides of anti-twist block, and the rear part of anti-twist block is actively clamped. The utility model is actively clamped to the rear part of anti-twist block using active type adjusting assembly;The main structure of adjusting anti-twist block posture, actively compensate the torsional angle of anti-twist block, the torque generated by hinged front is conducted, finally by hinged front and hinged rear part jointly balance its torque;It can solve the uneven stress of anti-twist block, the problem of insufficient reliability of torque transmission device.

This utility model provides a hand-cranked water pipe reel for a tunnel boring machine (TBM) with a damping adjustment mechanism, relating to the field of TBM equipment technology. It includes a base and a pair of guide wheel mechanism mounting plates. The base is bolted between the guide wheel mechanism mounting plates. A base is mounted on the top of the base, and a reducer bracket and a rotary joint bracket are respectively mounted on the top of the base. Both the reducer bracket and the rotary joint bracket have lifting eye holes on their tops. A limit switch mounting plate is mounted on the side wall of the reducer bracket, and a cam limit switch is mounted on the limit switch mounting plate. Reducer mounting plates are welded between the inner walls of the reducer bracket. A damper mounting plate is mounted on one side of the reducer mounting plate via a fastener. This device has a novel overall design and simple structure, and is therefore worthy of widespread promotion and use.

The tunnel boring machine has a sealing device (212) having a first inner chamber (369) and a second inner chamber (372) to which lubricant can be applied via a fluid supply device. The pressure in the first inner chamber (369) can be regulated via the fluid supply device such that the pressure is between the pressure in the head chamber (306) located in front of the first inner chamber (369) along the tunneling direction and the pressure in the second inner chamber (372) located behind the first inner chamber (369) along the tunneling direction. Therefore, for environmental protection reasons, lossless lubrication can be achieved, and mixing of the lubricant in the first inner chamber (369) with other substances in the head chamber (306) is avoided.