804results about How to "Avoid rework" patented technology

The invention discloses a deep well tunnel cable anchor rigid-flexible coupling support and surrounding rock overall reinforced support method which is characterized by firstly excavating a tunnel according to the shape of cross section of the tunnel, and spraying concrete on the surface of surrounding rocks of the cross section formed by excavation; adopting a steel bar mesh and a high-strength prestressed anchor for supporting the surrounding rocks of the tunnel in time; implementing high-strength prestressed anchor cables at the center and two spandrels at the top part of the tunnel; re-spraying the concrete on the surface of the surrounding rocks of the tunnel; mounting a grouting anchor pipe on a top plate and two side surrounding rocks of the tunnel after the tunnel is excavated for 15-20d, and injecting cement slurry into fracture regions of the surrounding rocks of the tunnel; excavating a baseplate of the tunnel after the tunnel is excavated for 25-30d, mounting the grouting anchor pipe, injecting cement slurry liquid into a rock layer of the baseplate; and finally using the concrete to backfill the baseplate of the tunnel flat. The method can solve the problems of large deformation of the deep well tunnel and serious floor heave, avoid the repair work of the tunnel and have significant economic benefits.

A design support device supports a design project achieved by executing a plurality of tasks including subtasks. The design history data of the design performed by a designer is sequentially stored and associated with a task to sequentially generate task-design history relevant data. A subtask is defined with respect to the task-design history relevant data to sequentially generate design process data. Subtask relevant data indicating a relevance between subtasks with respect to the plurality of pieces of design process data is generated, and a subtask to be performed in a later design work is estimated with respect to an in-process design work from a difference between past design process data of a project performed in the past and in-process data in a project performed currently to obtain an estimate subtask. An optimal execution order is calculated to obtain estimate design process data and the estimate design process data is output.

The invention discloses a method for preventing and controlling a bottom heaving disaster of a mine stoping tunnel. The method comprises the following steps: 1) digging a stoping tunnel; 2) confirming a mechanical parameter of a surrounding rock substrate; 3) confirming a supporting scheme for the stoping tunnel: respectively confirming supporting structures adopted by a top plate supporting system, a tunnel side part supporting system and a base plate supporting system, wherein the supporting structure is confirmed by adopting the top plate supporting system according to a conventional confirming method for a tunnel top plate supporting scheme, the supporting structure is confirmed by adopting the tunnel side part supporting system according to the width of a coal side breaking area, andthe supporting structure is confirmed by adopting the base plate supporting system according to the maximum breaking depth of the tunnel base plate and the horizontal distance from the maximum breaking depth of the tunnel base plate to a side wall of an adjacent tunnel; and 4) constructing the supporters of surrounding rocks of the stoping tunnel. The method provided by the invention is simple insteps, is conveniently realized, is low in invested cost and is good in use effect. The bottom heaving problem of the mine stoping tunnel under a complex condition is solved. The repairing operation of the stoping tunnel is avoided and the construction cost is low.

A polishing apparatus has a polishing section (302) configured to polish a substrate and a measurement section (307) configured to measure a thickness of a film formed on the substrate. The polishing apparatus also has an interface (310) configured to input a desired thickness of a film formed on a substrate to be polished and a storage device (308a) configured to store polishing rate data on at least one past substrate therein. The polishing apparatus includes an arithmetic unit (308b) operable to calculate a polishing rate and an optimal polishing time based on the polishing rate data and the desired thickness by using a weighted average method which weights the polishing rate data on a lately polished substrate.

The invention provides a correction device and a correction method for an inner ring of an engine crankcase. The correction device comprises a correction clamp base, positioning pins and a pressure plate; the tooling surface of the correction clamp base is provided with a circular seam allowance, and the inner side of the seam allowance is provided with a circle of uniform positioning pin holes; and the middle section of the positioning pin has a round table step-shaped columnar structure, the taper of the round table of the middle section is as same as that of the inner ring of the crankcase, and the maximum diameter of the positioning pin enables the positioning pin inserted into the positioning hole not to interfere with a blade of the crankcase. The correction method comprises the following steps of: jointing the seam allowance of the crankcase and the seam allowance on the correction clamp base; inserting the positioning pins into the positioning pin holes, positioning the positioning pins and the inner ring of the crankcase in a two-section contact mode, and then fixing the crankcase on the correction clamp base through the pressure plate; welding the inner ring and the blade of the crankcase; and finally, pouring a glue layer into the inner side of the inner ring of the crankcase, and gluing the inner ring and the blade of the crankcase. The device and the method ensurethe concentricity of the easily-deformed inner ring and the outer crankcase and the ellipticity of the inner ring.

The invention relates to an auxiliary management system for subway integrated pipeline construction. The system comprises a user management module, a three-dimensional management module, a construction management module and a logging module, wherein the user management module comprises user login authentication and logging off function; the three-dimensional management module comprises scene import, three-dimensional roaming, layer management, legend management and navigation functions; the construction management module comprises basic information management, pipeline modification management, spatial analysis, pipeline collision detection, process coordination, construction schedule management functions; and the logging module can record information on user operation on pipelines in real time. The auxiliary management system for subway integrated pipeline construction provided by the invention has the beneficial effect that three-dimensional visualization of construction process management is realized, so that construction schedule is more visual, and the representation of construction management effect is enhanced, and rework in pipeline construction process is effectively avoided; and through spatial analysis and pipeline collision detection means, the problem of spatial collision between professional pipelines can be effectively solved, and the smooth progress of projects is ensured.

The invention relates to a lithium ion battery lamination unit, a battery cell, a battery cell preparing method and a lithium ion battery and belongs to the technical field of lithium ion batteries. The lithium ion battery lamination unit comprises an inner electrode slice, membranes and outer electrode slices, wherein the polarity of the inner electrode slice and the polarity of the outer electrode slices are opposite, the membranes are attached to the two side faces of the inner electrode slice respectively through a binder, and the outer electrode slices are attached to the outer side faces of the membranes through the binder. According to the lithium ion battery lamination unit, on one hand, dislocation of the membranes relative to the electrode slices can be prevented, and a short circuit between a positive plate and a negative plate can not be formed; on the other hand, during battery cell manufacturing, due to the fact that part of procedures of clamping membranes in the electrode slices are omitted, battery cell manufacturing time is shortened greatly, and the production efficiency of the lithium ion battery is improved.

The invention discloses a smoke-sensitive fire detector auto-calibrating device, relating to a smoke-sensitive sensor calibrating device, mainly comprising a controller, a smoke box, a wind speed controller, a consistence measuring device, a smoke-adding controller, a smoke stirrer, an observation window, an air duct and a smoke exhaust device, further comprising a detector car. The detector car is arranged in the smoke box and is used for detecting alarm threshold of a detector. The controller and the smoke box are electrically connected, communicate signals and information with the wind speed controller, the consistence measuring device, the smoke-adding controller and the smoke stirrer, and are simultaneously communicated with the detector on the detector car so as to receive a consistence signal of the consistence measuring device and transmitting calibrating information. The invention has the advantages that although the consistency of sensor sensitivities of the detector is different, the consistency of the detectors calibrated by the auto-calibrating device is very high, each detector can pass through the test, the product rework situation is prevented, and the production efficiency is improved.

The invention discloses a soft rock tunnel deformation control method based on anchor rod force analysis. A soft rock tunnel is excavated and subjected to deformation control construction from back to front according to multiple segments, and when any segment is excavated and subjected to deformation control construction, the method includes the steps that 1, surrounding rock basic mechanical parameters are determined; 2, the tunnel reserved excavated volume is determined; 3, the tunnel is excavated; 4, a tunnel preliminary bracing structure is determined; 5, tunnel deformation control construction is carried out, wherein in the tunnel preliminary bracing construction process, a flexible mold bracing structure is constructed from back to front; 6, a next segment is excavated and subjected to deformation control construction; 7, the step 6 is repeated multiple times till the full excavation and deformation control construction process of the soft rock tunnel is completed. The soft rock tunnel deformation control method is reasonable in design, convenient to achieve and good in use effect, the reserved excavated volume is determined according to the surrounding rock deformation condition of the soft rock tunnel, the flexible mold bracing structure is adopted for carrying out full-section bracing on the tunnel, the flexible mold bracing structure and the tunnel preliminary bracing structure are in coordination deformation, and deformation of the soft rock tunnel can be effectively controlled.

The invention discloses a rapid construction method of an arched pipe truss. The rapid construction method comprises the following steps that (1) a BIM structural model of the arched pipe truss is established; (2) horizontal integrated pre-assembly and segment welding are performed in a factory for the pipe truss to form truss bodies to be transport to a site; (3) the truss bodies are assembled to form two main trusses; (4) in-span brackets are installed; (5) the two main trusses are lifted and welded to connect the two main trusses into the pipe truss; (6) the assembled pipe truss is lifted in place to complete installation of the pipe truss; (7) the steps 2-6 are repeated to form two pipe trusses, a secondary truss and a roof support are installed, so that the installed part forms a whole force system; and (8) the steps 2-7 are repeated until all pipe trusses are installed. According to the rapid construction method of the arched pipe truss, in-span vertical one-time splicing rapid construction of the arched pipe truss can be completed in the case of poor on-site site conditions, the risks of working at height are reduced, the construction period is ensured, the construction cost is saved, and multiple purposes are achieved at one stroke.

The invention discloses an excavation and preliminary bracing method for a soft rock tunnel. The excavation and preliminary bracing construction for the soft rock tunnel are performed in sections from back to front. When any section is subjected to excavation and preliminary bracing construction, the method comprises the following steps: 1) confirming basic mechanical parameters of the surrounding rock; 2) confirming the reserved excavated volume of the tunnel: confirming the reserved excavated volume of the currently constructed section according to a theoretical value of inward displacement of the surrounding rock of the soft rock tunnel after being braced; 3) excavating the tunnel; 4) confirming a preliminary bracing structure of the tunnel; 5) constructing the preliminary bracing of the tunnel; 6) performing the excavation and preliminary bracing construction of the next section; and 7) repeating the step 6) till all the processes of the excavation and preliminary bracing construction of the soft rock tunnel are completed. The method disclosed by the invention has the advantages of simple steps, reasonable design, convenience in realization and good use effect; the reserved excavated volume is confirmed according to the surrounding rock deformation condition of the soft rock tunnel; and the steel bracket and the anchoring net sprayed preliminary bracing structure are coordinated for performing all-section preliminary bracing on the tunnel.

The invention discloses a system and a method for the functional test of a mobile phone single board. Aiming to solve the problems of high cost but low efficiency of functional test technology of the existing mobile phone single board, the mobile phone single board test system of the invention comprises a test fixture, functional components, a power supply, a synthetic tester and a computer. The mobile phone single board is fixed on the test fixture, and the mobile single board test point contacts the test probe of the test fixture. The power supply provides power for the mobile phone single board. The functional components fixed on the test fixture are used for the functional test to the mobile single board. The computer controls the synthetic tester to calibrate and test the radio frequency of the mobile phone single board by the test fixture. The test method comprises the followings steps. Firstly, the mobile phone single board is fixed on the test fixture. Secondly, the mobile phone single board is started. Thirdly, a LCD displays images. If the display is normal, the fourth step can be carryout out; otherwise the test ends. Fourthly, the mobile phone single board is tested. The invention has the advantages of low cost as well as high efficiency.

The invention discloses a soft rock tunnel excavation method based on anchor bolt stress and the soft rock tunnel is excavated by a plurality of sections in a longitudinally direction of the tunnel from rear to front. The method for excavating any section of the soft rock tunnel comprises the following steps: first, determing the basic mechanical parameters of surrounding rock; second, determing the reserved excavation capacity of tunnels: determing the capacity of reserved excavation of the current construction section according to a theoretical value S of the soft rock tunnel inward displacement after the completion of supporting, the S is the sum of plastic displacement of surrounding rock in soft rock tunnel and displacement after shaping deformation of surrounding rock in soft rock tunnel; third, the tunnel is excavated; fourth, the next section is excavated; fifth, repeating step fourth until the full excavation of the soft rock tunnel is completed. The soft rock tunnel excavation method has the advantages of simple steps, reasonable design and convenient implementation, and has good effect. The excavation capacity is determined according to the deformation of the surrounding rock of the soft rock tunnel, which can solve the problem of the reserve deformation of the soft rock tunnel, avoid the problem of soft rock tunnel repair work and cost less.

The invention discloses a manufacturing method for a full optical fiber high-pressure gas chamber based on a hollow-core photon crystal fiber. The steps of the invention are as follows: a) two ends of a hollow-core photon crystal fiber (1) are respectively communicated with an airtight A chamber (2) and an airtight B chamber (3), and one end of gas distribution equipment (4) is communicated with the airtight B chamber (3), and the other end of the gas distribution equipment (4) is respectively connected with a vacuum pump (5) and a gas source (6) to be inflated; b) the airtight B chamber (3) is connected with the vacuum pump (5) through the gas distribution equipment (4) first, after the required vacuum degree is achieved, the airtight B chamber (3) is connected with the gas source (6) to be inflated again through the gas distribution equipment (4) until air pressure of the airtight A chamber (2) is more than or equal to one atmospheric pressure; c)the two ends of the hollow-core photon crystal fiber (1) are successively welded with a standard single film fiber (10) within a range of less than or equal to 1.5 min; d) a distillation function p(x) of air pressure of a fiber core in the hollow-core photon crystal fiber (1) is derived from a formula p(x)=p(1)(-c+a2-bx); e) a final air pressure value of the full optical fiber high-pressure gas chamber is calculated by more than one p(x). The p(x) can accurately determine the air pressure value of the full optical fiber high-pressure gas chamber.

The invention discloses a hidden frame glass curtain wall installation structure which comprises a building main body and a glass curtain wall installed on the building main body, wherein the installation structure further comprises an installation chassis, the glass curtain wall is regulated through the installation chassis to a set position and is fastened, and the position of the glass curtain wall is unchanged in the fastening process. Due to the adoption of the hidden frame glass curtain wall installation structure, the hidden frame glass curtain wall installation structure exciting and controlling the dynamic production process of prestress of an elastic material to form a stable prestress structure and conducting three-dimensional regulation in the installation process to substantially improve the installation accuracy is provided, and the hidden frame glass curtain wall installation structure has the characteristics of excellent firmness, accuracy, safety, convenience and replacement.

The invention relates to a method for optimizing an automobile product development system based on hierarchical decomposition. The method comprises: determining an optimized product development target; transmitting the development target in the entire vehicle hierarchy to lower hierarchies, namely the system hierarchy and the component hierarchy; realizing synergistic optimized solving among various hierarchies; and realizing the flexibility of a development task and modularized execution of development subtasks by combing the method with a multidisciplinary design optimization method. The invention provides the method which has quick convergence speed and high solving quality and can simultaneously realize optimization of development performance indexes and a design proposal in the entire vehicle hierarchy, the system hierarchy and the component hierarchy.

The invention relates to the technical field of tunnel and underground construction anchoring equipment, in particular to a self-propelled hollow slip casting anchor rod with a stress-measuring function and an operating method. The self-propelled hollow slip casting anchor rod with the stress-measuring function includes a rod body with a hollow structure, a self-propelled drill is connected at thefront end of the rod body, and the back end of the rod body is provided with a slip casting opening which communicates with an inner cavity of the rod body; and the rod body is further provided witha stress-measuring device and an anchoring structure which is close to the self-propelled drill. According to the self-propelled hollow slip casting anchor rod with the stress-measuring function, thestress-measuring device is arranged to combine the processes of drilling, anchoring and slip casting into the same construction process, and the anchoring can be achieved in short time; and stress conditions of all sections of the anchoring rod in the supporting process can be monitored, so that the supporting mechanism of action and the stress conditions of the anchoring rod under the various kinds of surrounding rock conditions can be known, and critical evidences and references are supplied to the research of design parameters for the anchoring rod, improvement of the construction techniqueand the surrounding rock failure mechanism.

The invention provides a non-metal pipeline hydraulic pressure seepage verifying attachment. A system of the non-metal pipeline hydraulic pressure seepage verifying attachment comprises a rectangle framework body, a bell end bulkhead, a jack bulkhead, a pipeline holt hoop iron, a jack, a water flooding pressure measurement system on the bell end bulkhead, and an operation method. The invention is characterized in that: the rectangle framework body forms a rectangle through channel steel welding, length of the rectangle is set according to length of a segment of pipeline, width of the rectangle is set according to a maximal diameter of a detected pipeline, and the rectangle framework body is provided with the pipeline holt hoop iron inside; one end of an intake and exhaust connecting pipe is connected with the bell end bulkhead, the other end of the intake and exhaust connecting pipe is connected with one end of a pressurization opening valve, an intake and exhaust valve and a pressure maintaining opening valve respectively, the other end of the pressurization opening valve is connected with a pressurization pressure gauge, and the other end of the pressure maintaining opening valve is connected with a pressure maintaining pressure gauge; the operation method is carried out according to certain steps. The verifying attachment has small investment, low cost and low technology difficulty, and is applied to a field pipeline construction site and a small scale pipeline production manufacturer.

The invention particularly discloses a method for mounting condensing steam turbines. The method is characterized by comprising embedding multifunctional permanent central standard plates and reference points; arranging support sizing blocks and cleaning foundations; mounting front and rear seat frames; mounting lower steam cylinders; mounting stators of power generators and bearing blocks; checking, cleaning and assembling the insides of the steam turbines and centering the steam turbines; finding up-rising inclination of rotors of the steam turbines and adjusting internal clearance of the steam turbines; mounting upper steam cylinders; assembling large covers of the steam turbines by means of fastening. The method has the advantages that reference measurement errors due to reference point and central standard plate embedding can be minimized; environmental influence on the labor efficiency when the steam cylinders are centered can be reduced; the accuracy of clearance between impellers and steam seals can be guaranteed; the mounting quality can be guaranteed by quality pre-control processes, accordingly, reworking phenomena can be completely eradicated, work can be effectively carried out at one step, the labor productivity can be improved, and the mounting construction periods can be guaranteed; the purpose of carrying out successful trial run at one step can be achieved, and excellent technical and economical effects can be realized.

The invention discloses a short-distance coal seam roadway excavating and supporting method. The method comprises steps as follows: 1, basic mechanical parameters of surrounding rock are determined; 2, reserved excavated volumes of two sides of a roadway are determined; 3, the roadway is excavated; 4, a roadway side supporting structure is determined and comprises roadway supporting units and grouted rock bolts which are arranged in a staggered manner, and the roadway supporting units comprise top plate supporting systems, bottom plate supporting systems and roadway side supporting systems; and the limit caving arch rise is determined; 5, the roadway supporting structure is determined; 6, roadway surrounding rock supporting construction is performed; 7, excavation of the next section and roadway surrounding rock supporting construction are performed; 8, the step 7 is repeated multiple times, and the short-distance coal seam roadway construction process is completed. The method is simple, reasonable in design, convenient to realize and good in use effect, the reserved excavated volumes of the two sides of the roadway are determined respectively according to surrounding rock deformation conditions of the short-distance lower coal seam roadway, and whole section supporting is performed on the roadway through combination of the grouted rock bolts with the roadway supporting units.

The invention discloses an adjustable positioning structure for a pre-buried bolt double-layered positioning plate and a construction method. The structure comprises four additional pre-buried bolts vertically arranged at the four corners of a rectangle, wherein additional iron plates are arranged on the front side edge and the back side edge of the rectangle; two wood beams are parallelly arranged between the two additional iron plates; position adjusting holes are formed in the additional iron plates; a michinaga positioning plate adopting a frame structure is mounted on the wood beams; a socle positioning plate is mounted on the michinaga positioning plate in a hanging manner; socle pre-buried bolts are mounted on the socle positioning plate. During the whole process of mounting the adjustable positioning structure for the double-layered positioning plate, the mounting of each step is adjustable, the process quality control is facilitated, the mounting precision of pre-buried bolts is ensured, and the reworking is avoided. Through the practical application on the construction site, and through the adoption of the adjustable positioning structure for the double-layered positioning plate provided by the invention to carry out the construction of the pre-buried bolts, the allowable deviation of the pre-buried bolts in a practical project is larger than the national regulation requirement.