Patents
Literature
Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

1671 results about "Shield machine" patented technology

Shield construction method for three-line parallel under-passing trunk railway tunnel

ActiveCN101126318AEffective control of deformationEffective control of displacementUnderground chambersTunnel liningRailway tunnelEconomic benefits
The invention discloses a shield construction method of digging three parallel tunnels under a trunk railway, which belongs to the field of tunnel construction technology. The construction method of the invention comprises the procedure that: the model analysis on each construction sequence and method is made by a three-dimensional finite element and the shield construction sequence is selected; to select the reinforcement project of the railway bed is selected according to the influence degree of the dynamic stress, the load-carrying structural model is adopted to calculate and decide the shield area reinforcing bars enhancement project under the dynamic load of the railway train; the construction parameters are selected according to the test results and the performance of the shield machine, the front earth pressure is reasonably set , the synchronizing mortar injection is enhanced, the forward digging speed and the axis deviation are strictly controlled, the secondary mortar injection is made, the foam or mud is filled by utilizing a pre-embedded injection hole; the strict monitoring measures to monitor the shield construction process is adopted so that the construction unit can adjust the construction parameters in time and guarantee the construction safety. The invention not only guarantees the construction quality and the construction safety of the project but also creates good economic benefit.
Owner:CHINA RAILWAY NO 2 ENG GRP CO LTD

Method for exchanging tool of shield machine for tunnel construction

The invention discloses a method for exchanging a tool of a shield machine for tunnel construction, which comprises the steps of: (1) soil cabin replacement filling: performing the process of soil cabin replacement filling by using a spiral excavating machine and a slip casting system synchronously working with the spiral excavating machine; (2) advanced slip casting inside the machine: beating a plurality of slip casting pipes into the soil on the upper part of the shield machine from inner to outer inside the shield machine by respectively passing through a plurality of advanced geologic holes and then synchronously injecting cement paste into the soil on the upper part of the shield machine through the slip casting pipes by using a slip casting device till the cement paste cannot be injected any more; (3) cleaning cabin and exchanging tool synchronously: manually cleaning the cement plaster solidified inside the soil cabin and synchronously exchanging the tool mounted on the shield machine; and (4) getting rid of the difficult position of the shield machine and recovering the process. The method provided by the invention has the advantages of reasonable design, convenience for operation, low cost, high safety factor, good use effect and capable of solving the problem that the tool cannot be exchanged in the traditional tool exchanging mode under severe tool exchanging conditions.
Owner:URBAN RAIL TRANSIT ENG CO LTD OF CHINA RAILWAY FIRST GRP CO LTD +1

Construction site digital management system and application method thereof

The invention belongs to the technical field of construction site digital management and particularly relates to a construction site digital management system and an application method thereof. The management system comprises five sub systems, namely, a PLS (personnel location system), an access control system, a material management system, a shield operating system and a duct piece tracking system, wherein all the sub systems are connected with a remote database server, five sub database corresponding to the five sub systems are established in the remote database server, all the sub systems perform read-write operation on a main management object in a construction site range by using an RFID (radio frequency identification) technology, read data are uploaded to all corresponding sub databases in real time, and the operating authorization of a handheld RFID read head and the operating authorization of a shield machine are obtained through cross verification of data among all main sub databases. The management system and the application method have the advantages as follows: conventional extensive management is improved, the management responsibility is cleared, the management level is improved, and engineering information management, digital management and visual management are realized.
Owner:SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD

Muddy water balance type shield simulation testing system

ActiveCN102221474AAppropriate tunneling parametersReliable experimental basisStructural/machines measurementPore water pressureEngineering
The invention relates to a muddy water balance type shield simulation testing system. In the structure of the system, a model box for holding soil is fixed on a base; a refrigeration freezing device is communicated with a freezing pipe in the model box; the front part of a shield machine enters the model box through a guide sleeve on the side of the model box; a cutter disk at the front part of the shield machine is connected with the output shaft of a gearbox of a hydraulic power system through a main shaft; jacks at the left and right sides of the shield machine are connected between the model box and the gearbox; a space between a partition plate behind the cutter disk of the shield machine and the cutter disk forms a muddy water cabin; and an injection pipe of a muddy water pot, whichis connected with an air pressure boosting device, penetrates into the shield machine from the tail part of the shell of the shield machine. The system provided by the invention can simulate the tunneling process of the muddy water shield machine in a submerged tunnel construction with high water pressure and can synchronously record soil pressure, water pressure, displacement and the tunneling parameters of the shield machine, thereby finding out and analyzing the mechanism and conditions of muddy water pressure balance country rock and providing more reliable experiment basis for submerged tunnel construction and the design of a muddy water shield machine.
Owner:SOUTHWEST JIAOTONG UNIV

Device and method for physical simulation test of stability of deep tunnel surrounding rock

InactiveCN102721604ASafe Tunnel Construction SpeedEfficient tunnel construction speedStrength propertiesSoil mechanicsData acquisition
The invention discloses a device and a method for a physical simulation test of the stability of a deep tunnel surrounding rock and relates to a rock-soil mechanic technology. A structure of the device is that a pressure plate is covered on a sample in a deep tunnel rock body model instrument, and a vertical pressure system is arranged on the pressure plate and used for loading so as to simulate and exert gravity stress. A miniature shield machine drills into the sample from a drilling surface, and the miniature shield machine, a stepless speed changing box and a motor are sequentially connected to achieve drilling. Eight optical fibers and six strain gauges are distributed in the sample, the optical fibers are connected with a distributed optical fiber monitoring system, and the distributed optical fiber monitoring system and the strain gauges are respectively connected with a data acquiring system so as to achieve detection and recording. By means of the device and the method for the physical simulation test of the stability of the deep tunnel surrounding rock, a development and change law of stress strain when a deep tunnel rock body is excavated in tunnel construction can reappear accurately, and a novel solving path for researching the stability of the grotto surrounding rock and forming mechanism of rock burst in the tunnel construction.
Owner:INST OF GEOMECHANICS

Closed origin and arrival construction method of shield machine

ActiveCN101608551ASafety tightnessSafe wayUnderground chambersTunnel liningArrival processFilling materials
The invention discloses a closed origin and arrival construction method of a shield machine, comprising the following steps: (1) using a tight continuous wall enclosure structure as a plain concrete continuous wall; (2) opening slanting periphery observation holes on a cavity door to observe the stable and leak conditions of soil bodies; (3) chiseling concrete and steel bars on the cavity door sectionally, and using plain concrete to replace the original continuous wall synchronously; (4) installing a receiving device of the shield machine, and applying pre-applied force; (5) filling materials in a steel sleeve barrel of the receiving device to a request height; (6) testing the pressure resistance of the steel sleeve barrel; (7) carrying out the digging construction of the shield machine until a shield tail of the shield machine enters or separates the cavity door; and (8) decompressing and disassembling the steel sleeve barrel of the receiving device. The closed origin and arrival construction method of the shield machine is safe, economical, efficient and simple, changes uncontrollable factors into controllable factors in a shield origin and arrival process, greatly reduces risks in a construction process, better controls land subsidence and provides the effectively ensured closed origin and arrival construction method of the shield machine.
Owner:CHINA TUNNEL CONSTR GUANGDONG

Track and posture composite control method in shield tunneling process

ActiveCN102102522AEliminate positional deviationEliminate Angle DeviationTunnelsHydraulic cylinderAngular deviation
The invention discloses a track and posture composite control method in a shield tunneling process. The method comprises the following steps of: performing control by setting threshold values for a posture and a track; immediately adjusting the posture as long as the posture deviates to exceed the limit even though the track does not reach a deviation correction threshold; solving current positional deviation Si and angular deviation theta I of a shield machine through measurement and calculation when a shield works; continuously propelling the shield machine when the Si is less than or equal to a positional deviation threshold value Scmin of a track and posture composite controller and theta i is less than or equal to an angular deviation threshold value theta cmin of the track and posture composite controller or when the Si is less than or equal to positional allowable deviation Smin of actual tunnel construction and theta i is equal to 0; contrarily, automatically adjusting propelling pressure of a hydraulic cylinder of each sub-region and propelling displacement to simultaneously eliminate the positional deviation and the angular deviation generated in a tunneling process. Thus, an actual tunneling route of the shield machine is controlled within a design axial range of a tunnel, unnecessary overbreak and underbreak are avoided, and the forming quality of the tunnel is improved.
Owner:ZHEJIANG UNIV

Soil pressure balance shield machine cycloid speed reducer

The invention relates to the technical field of shield machine speed reduction, and discloses a soil pressure balance shield machine cycloid speed reducer. The soil pressure balance shield machine cycloid speed reducer is characterized in that: a cycloid driving part is arranged in a cavity formed by connecting a front end cover with a back end cover by using a pin wheel housing, wherein a half-buried hole of the pin wheel housing is in movable fit with a sleeveless needle pin; four cycloidal wheels are arranged on a double-eccentric bearing, wherein the phase difference between a first cycloidal wheel and a second cycloidal wheel and between a third cycloidal wheel and a fourth cycloidal wheel is 180 degrees, and the second cycloidal wheel and the third cycloidal wheel have the same phase; and a W output mechanism consists of an output shaft, a pin and a uniform loading plate, the pin is provided with three circular ring plates to form a four-section freely supported structure, and the W output mechanism is supported in an inner hole of a front end cover and an inner flange outer circle of a back end cover through a bearing respectively. The soil pressure balance shield machine cycloid speed reducer has the following advantages that: (1) the axial size is 45 to 55 percent shorter than that of a third-class planetary reduction gear of the background art; (2) the cycloidal wheels can be assembled in a reversed mode to double the service life; (3) the manufacturing cost is 40 to 50 percent of that of the third-class planetary reduction gear of the background art; and (4) the inertia force and the inertia moment in operation are theoretically completely balanced.
Owner:国茂精密传动(常州)有限公司

Tool pan back-loading type device for changing tool of slurry-balanced shield machine under normal pressure

InactiveCN102322271ATunnelsTool bitEngineering
The invention relates to a tool pan back-loading type device for changing a tool of a slurry-balanced shield machine under normal pressure, which is applied to the technical field of shield machine engineering machinery. The tool pan back-loading type device for changing the tool of the slurry-balanced shield machine under normal pressure comprises a tool bit, a first seal ring, a tool post, a tool bit fixing sleeve, a tool bit fixing bolt, a tool bar, a cylindrical gate, a grease injection valve, a flushing valve, a third seal ring, a fourth seal ring, a bearing, a large end cover, an oil cylinder and the like; when the tool is in the working state, the tool bit is fixed on the tool bar through the tool bit fixing sleeve and the tool bit fixing bolt; the first seal ring is mounted at thefront end of the tool bar, and the tool bar is matched with the front end of the tool post and is sealed through the first seal ring; the tool bar is fixed on the tool post by the rear end of the tool bar and the tool post through a first fixing screw; the cylindrical gate is fixed on the tool post through the bearing and the large end cover; the grease injection valve and the flushing valve are installed on the tool post; and a serial number is arranged between the cylindrical gate and the tool post. The tool pan back-loading type device for changing the tool of the slurry-balanced shield machine under normal pressure has the advantages of simple structure, reliable working, and capability of conveniently and quickly changing a worn tool under normal pressure (atmospheric pressure) in the shield construction process.
Owner:SHENYANG HEAVY MACHINERY GROUP

Shield tunneling machine for tunnel connecting passageway and connecting passageway tunneling method of shield tunneling machine

The invention belongs to the technical field of tunnel construction equipment, and relates to a shield tunneling machine for a tunnel connecting passageway and a connecting passageway tunneling method of the shield tunneling machine. The shield tunneling machine comprises a start end supporting walking platform and a receiving end supporting walking platform which are respectively arranged on material transportation rails in two main tunnels, a shield tunneling machine main unit, a counterforce supporting frame and a main tunnel supporting assembly which are respectively arranged on the start end supporting walking platform and a corresponding main tunnel duct piece, and a start end socket sealing assembly and a receiving end socket sealing assembly which are respectively arranged at the start end and the receiving end of the connecting passageway, wherein a duct piece hanging assembly is arranged on the start end supporting walking platform; a jacking tunneling assembly is arranged between the counterforce supporting frame and the shield tunneling machine main unit. The shield tunneling machine can realize automatically mechanical excavation; the labor intensity is greatly reduced, the energy consumption is reduced, and the cost is reduced; meanwhile, equipment construction is stable, and the efficiency is high; settling of the ground is effectively controlled, and the construction risk is reduced.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Three-dimensional attitude measuring set of tunneling construction guidance system

The invention discloses a three-dimensional attitude measurement device for a tunneling construction guidance system, which belongs to a positioning measurement device and aims to solve the problems that the prior three-dimensional attitude measurement device has higher requirement on the light intensity and is not accurate to the processing of pulsed light signals so as to simplify the installation and use of equipment. A prism, a lens, a CCD camera and an inclinometer are sequentially arranged on a light path along the axial direction in a machine case of the device, and output signals of the CCD camera are sent to a computer through a gigabit network cable; and output signals of the inclinometer are sent to the computer through an asynchronous serial communication interface. The device has small volume, simplifies the operation, and directly utilizes infrared rays of a total station instrument to focus through the lens to project on the photosensitive surface of the CCD camera to produce a photosensitive signal, the photosensitive signal is processed to obtain deflection angle data of incident light, and the deflection angle data are output to an external computer along with inclination angle data measured by the inclinometer. The device is mainly used for attitude measurement during the construction process of a shield machine and obtains a pitching angle, a rolling direction angle and a horizontal deflection angle of a shield in a real-time mode.
Owner:HUAZHONG UNIV OF SCI & TECH

Process for grouting on back of shield segment

The invention discloses a process for grouting on the back of a shield segment to control stratum settlement in shield tunnel construction. The process comprises steps of synchronous grouting, secondary grouting and a special treatment process; during synchronous grouting, when a shield advances and a shield tail is formed, a grouting pump of a shield tunneling machine is used for symmetrical grouting through a synchronous grouting system of the shield tunneling machine; during secondary grouting, double grout is injected to the back of the segment through a shield segment secondary grouting hole, and a gap on the back of the segment is subjected to secondary filling and compression; and the special treatment process comprises steps of adding a triallyl cyanurate (TAC) high-molecular polymer material solution and pressing and injecting epoxy resin seal reinforcing rings. By the process, particularly the TAC high-molecular polymer is added to improve a soil layer and the epoxy resin reinforcing rings are pressed and injected to reinforce the stratum in the special treatment process, the grouting effect is good in a safe and convenient way, the flow and loss of the grout are prevented, the grouting plumpness is ensured, the soil body can be well improved, the stratum is reinforced, the settlement amount is effectively controlled, and the shield tunneling construction is safely and smoothly carried out.
Owner:CHINA RAILWAY TUNNEL GROUP CO LTD +1

Shield machine automatic guiding system based on optical fiber gyro and PSD laser target

The invention relates to an automatic guiding system of shield machine based on fiber gyro total station and PSD laser target, comprising fiber gyro total station, PSD laser target, computer of automatic guiding system and back-sight reference prism. The fiber gyro total station comprises fiber gyro north seeker, laser total station and ARM processor. The laser total station emits laser to the back-sight reference prism and PSD laser target so as to measure the distance from fiber gyro total station To back-sight reference prism and PSD laser target. The back-sight reference prism reflects laser emitted by laser total station according to the incident direction. The ARM processor calculates coordinates of laser total station, horizontal azimuth angle of emitted laser and coordinates of laser target. PSD laser target reflects laser emitted by laser total station according to the incident direction and measures the angle between the axis and incident laser and rolling angle and sloping angle of shield machine. The computer of automatic guiding system calculates the horizontal azimuth angle of shield machine. The invention is provided with high accuracy, automatic seeking north and convenient operation. It can be applied in automatic guiding in underground working device such as shield machine.
Owner:BEIHANG UNIV

Shield segment center detection system and shield posture determination method

The invention relates to the technical field of underground railway tunneling shield construction. A shield segment center detection system is a real-time system which is provided with a sensor, an instrument and control equipment based on a computer and network communication technology. A shield posture determination method comprises the following steps of: scanning the inner surface of the last segment section of a shield tail of a shield machine which is just manufactured along the circumferential direction in a circumference scanning mode; performing curve fitting by using the acquired data so as to acquire the relative position between a field tail segment center and a circumference scanning rotation center; calculating the geodetic coordinate of the field tail segment center through the geodetic coordinate of the rotation center; and determining the working posture of the shield machine by realizing the connecting line between the central geodetic coordinate of the last segment section which is just manufactured and the shield head central geodetic coordinate of the shield machine. Based on a tunnel formed by the shield, the working posture of the shield machine is determined and can be grasped by the shield machine accurately, further construction can be guided and the quality of an excavated tunnel can be effectively ensured.
Owner:上海地铁盾构设备工程有限公司

Shield construction system based on ground penetrating radar

The invention relates to a shield construction system based on a ground penetrating radar, comprising a shield machine and the ground penetrating radar, wherein the shield machine is connected with the ground penetrating radar through a signal transmission system combining a wireless signal transmission mode with a wired signal transmission mode; the ground penetrating radar and a wireless signal transmission module of the signal transmission system adopt a DC power supply system for a power supply; the power supply of the DC power supply system is obtained by carrying out voltage and frequency transformation processing on commercial AC; and the ground penetrating radar is arranged in front of a cutterhead of the shield machine by adopting a specially designed projection structure. The invention has innovative application of installing the ground penetrating radar on the cutterhead of the shield machine for detecting front geology, can enable the ground penetrating radar to be used for normally operating in an underground construction environment without being damaged by external conditions, effectively ensure the radar power supply, also realize good information transmission through the ground penetrating radar and a computer inside a control chamber of the shield machine and be widely used in the fields of various underground constructions and tunnel constructions, and the like.
Owner:上海地铁盾构设备工程有限公司

Energy-saving type shield hydraulic pressure control system using hydraulic pressure transformer

The invention discloses an energy-saving shield machine hydraulic pressure control system, adopting hydraulic transformer, which comprises a hydraulic transformer, a motor, a constant pressure variable displacement pump, a two-position three-way reversing valve, a proportional overflow valve, a safety valve, an accumulator, a hydraulic cylinder, a three-position four-way reversing valve, a hydraulic motor, a reducing valve and a two-position two-way reversing valve; wherein, the shield machine driving, the cutter head drive and the spiral transportation system are integrated in a loop; the constant pressure network comprising the constant pressure variable displacement pump and the accumulator provides the system with power energy; the propulsion system adopts group control and comprises a plurality of groups; the discharge capacity of variable displacement pump/motor inside the hydraulic transformer is adjusted in real-time to control the speed and the propulsive force of the propulsion hydraulic cylinder and the rotational speed and the output torque of the hydraulic motor. The energy-saving shield machine hydraulic pressure control system has the advantages of adopting hydraulic transformer and other energy-saving elements and control methods, lossless transfer of energy, guarding against energy loss in the throttling speed regulation system, and good performance of energy-saving.
Owner:ZHEJIANG UNIV

Shield synchronous grouting construction method and construction material

The invention discloses a shield synchronous grouting construction method and a construction material. The construction material comprises liquid A and liquid B, wherein the liquid A comprises 25.5 weight percent of cement, 2.6 weight percent of bentonite, 0.4 weight percent of stabilizing agents and 71.5 weight percent of water; the liquid B is water glass; and the volume ratio of the liquid A to the liquid B is 8:1-15:1. During synchronous grouting construction, the liquid A is prepared in a mixing station, and the liquid A and the liquid B are respectively conveyed into a liquid A slurry storage tank and a liquid B slurry storage tank which are arranged on a shield machine; the liquid A and the liquid B are respectively conveyed into a mixer positioned at the shield tail part of the shield machine through a liquid A slurry injection pipe and a liquid B slurry injection pipe; and the liquid A and/or the liquid B in the mixer are/is synchronously injected into a shield tail building gap through a shield tail slurry injection pipe. The shield synchronous grouting construction method solves various problems in subsequent grouting, synchronous single slurry injection, in-time grouting and secondary grouting in the prior art through utilizing good performance of the liquid A and the liquid B before and after the mixing of the liquid A and the liquid B and combining a primary synchronous grouting process.
Owner:CHINA RAILWAY 15TH CONSTR BUREAU GRP

Method for relieving and cutterhead repairing of shield machine in weathering groove

The invention relates to the technical field of tunnel shield construction, in particular to a method for relieving and cutterhead repairing of a shield machine in a weathering groove. By means of the method, the problems of complex process, long construction period, high cost and the like during shield body relieving and cutterhead repairing in conventional construction are solved. The method comprises the steps of: carrying out grouting reinforcement on collapse body in front of a cutterhead, collapse body above the cutterhead, collapse body above shield tail and collapse body of an anchor cable; building water pressure of cut, eliminating counter-force of tunneling, retreating the shield body and relieving the cutterhead; drilling, exploding and repairing caverns, cleaning the excavated bin and repairing internal structure, body structure and accessory structure of the cutterhead to ensure that the shield body recovers tunneling. The method has the advantages of simple process, short construction period, low construction cost, strong applicability and the like. By means of the method, the relieving and the repairing of the cutterhead of the tunnel are successfully completed; the risk that river water backward pouring into the tunnel is avoided; the shield machine can rapidly recovering the normal tunneling; and the favorable economic benefit and social benefit are obtained.
Owner:THE 2ND ENG OF THE 12TH BUREAU GROUP OF CHINA RAILWAY +1
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products