673results about How to "Reduce disturbance" patented technology

The invention provides an anchor rod with a barb structure and a construction method.The anchor rod comprises a hollow anchor rod body, a core rod arranged in the anchor rod body and a barb part arranged on the outer side of the anchor rod body, and the length direction of the core rod is the same as that of the anchor rod body; the multiple barb parts are arranged in the length direction of the anchor rod body at intervals, a plurality of barb pieces are arranged on each barb part at intervals, and the barb pieces are obliquely arranged on the anchor rod body. And barb pieces are arranged at the positions, corresponding to the barb parts, of the core rod. According to the anchor rod with the barb structure and the construction method, the core rod is arranged in the hollow anchor rod body, and the barb pieces and the barb pieces are matched to form a special composite stress form, so that the overall pulling resistance of the anchor rod is effectively improved, the construction cost is reduced, and the construction period is shortened; and as the designed length of the anchor rod is obviously shortened, disturbance to the surrounding environment is reduced, and pollution to the environment is reduced.

The invention discloses a river and lake polluted bottom mud environment-friendly dredging and solidification treatment continuous treatment method, and relates to the technical field of environmental protection engineering.The method comprises the following components of S100, ecological dredging control range and depth, S200, bottom mud conveying and dewatering, S300, solidification treatment and resource utilization, and S400, residual water treatment and recycling. According to the method, the control range and depth of ecological dredging are accurately determined, the influence of the flow speed and the flow direction on migration and transformation of bottom mud pollutants is simulated through a hydrodynamic model, large-scale release of the pollutants in the dredging process is effectively avoided, meanwhile, in the bottom mud conveying and dewatering stage, efficient conveying equipment and an optimized filtering device are adopted, and the efficiency is improved. Disturbance and release of the bottom mud in the conveying and dewatering process are reduced, and the risk of secondary pollution is further reduced.

The invention discloses a weak surrounding rock tunnel peripheral hole empty hole guide back break control blasting construction method. The method comprises the steps that the surrounding rock grade and the blasting circulation footage are determined; designing tunnel peripheral hole hollow guide drilling blasting parameters, and determining peripheral hole pitch and explosive load; performing drilling operation; after drilling of the rock drilling equipment is completed, hole-separated charging is carried out on the peripheral holes, and the distance L between the charging peripheral holes and the non-charging empty holes is preliminarily calculated by analyzing the stress state, the impact pressure and the failure criterion of rock; according to the distance L, non-charging empty holes are formed between the charging peripheral holes; after safety alert is ensured, blasting is carried out; the steps are repeated until the tunnel blasting back break value reaches the expected standard, the optimal tunnel peripheral hole hollow guide drilling blasting parameters can be determined, and construction is conducted according to the optimal parameters; over-excavation and under-excavation can be effectively controlled, the situations of block falling of weak surrounding rock and the like are effectively reduced, and the safety and working efficiency of follow-up construction operation are improved.

The invention discloses a space floating mechanical arm motion planning method and system based on zero reaction space and reinforcement learning, and relates to the field of mechanical arm motion planning. The invention aims to solve the problem of base attitude disturbance caused by movement of an existing space floating mechanical arm. According to the technical scheme, the motion space of the space mechanical arm is designed to be the zero-reaction space, it is ensured that the motion of the mechanical arm does not generate unexpected disturbance on the base, and therefore the stability of the system and the task execution precision are improved. In addition, a reinforcement learning algorithm is combined, and the motion space is set as a zero-reaction motion space. The efficient search and optimization capability of reinforcement learning enables the mechanical arm to find an optimal motion strategy in a complex task space, and meanwhile, disturbance to the base is effectively avoided. The strategy can be continuously adjusted through multiple rounds of training and reinforcement learning so as to adapt to different task requirements, and it is guaranteed that when the mechanical arm executes space grabbing, maintenance and other tasks, high-precision operation can be kept, and it can be guaranteed that the base is stable. Experimental results show that by means of the method, deviation of the attitude of the base can be remarkably reduced, the stability and efficiency of task execution are improved, and a feasible solution is provided for on-orbit service tasks of the space mechanical arm in the future.

The invention discloses an intelligent data acquisition and optimization control system applied to a mine filling system, and relates to the technical field of computer automatic control, the system comprises an ore body stress analysis unit, a filling slurry solid phase mass analysis unit, a filling body physical property analysis unit and a filling control and analysis unit; the ore body stress analysis unit is used for establishing a three-dimensional ore body geometric model according to an ore body geological exploration result, dividing the three-dimensional ore body geometric model into finite element grids and calculating the solid phase mass concentration of filling slurry; the filling body physical property analysis unit is used for establishing a rheological model of the filling slurry according to the solid phase mass concentration of the filling slurry; and the filling control and analysis unit is used for calculating the filling stability according to the three-dimensional stress tensor field of the ore body and the pore water pressure of the filling slurry to obtain a stability coefficient. The filling speed can be intelligently controlled, the construction stability is evaluated in real time, and the safety and high efficiency of the filling construction process are ensured.

The invention discloses a pressurized water reactor rod changing method and system, electronic equipment and a computer readable storage medium, and the method comprises the steps: obtaining a plurality of rod pre-changing strategies corresponding to a first burnup point according to a plurality of rod changing interpolation relationships of a plurality of control rods when it is monitored that the current burnup point is the first burnup point, each control rod corresponds to a rod changing interpolation relation, the rod changing interpolation relation comprises a plurality of burnup points and a rod pre-changing strategy corresponding to each burnup point, and the rod pre-changing strategy is used for indicating the pre-insertion step number of the corresponding control rod; adjusting the pre-insertion step number of each control rod according to a rod pre-changing strategy corresponding to each control rod at the first burn-up point; and rod replacement processing is carried out based on the multiple adjusted control rods. According to the invention, disturbance of the pressurized water reactor can be reduced when rod sequence exchange is carried out on the control rod.

A wind-resistant damping system of a flexible photovoltaic support comprises a wind-resistant cable, a bevel edge column, a middle column and a truss connector, a bearing cable and an assembly cable are arranged in parallel, photovoltaic assemblies are installed on the bearing cable and the assembly cable, and the wind-resistant cable is perpendicular to the bearing cable and the assembly cable and is connected with the bearing cable and the assembly cable through the truss connector. The two ends of the wind-resistant cable are connected with the bevel edge columns respectively, and the middle of the wind-resistant cable is connected with the middle column. The steel cable damping system composed of the balancing weight and the spring can effectively weaken disturbance of the load to the flexible support, and risks of deformation and fracture of the assembly are reduced.

The utility model discloses a compressor and refrigeration equipment, and belongs to the technical field of compressors, the compressor comprises a motor assembly, a pump body assembly, a crankshaft and a silencer, the motor assembly drives the crankshaft to rotate through a stator and a rotor, compressed air is discharged to the silencer through an exhaust port of an air cylinder, and exhaust noise is reduced through a silencing cavity; the crankshaft can penetrate through the first through hole of the cover body and the air outlet of the silencer, and due to the fact that the air outlet and the first through hole are oppositely arranged in the axial direction of the crankshaft, air is exhausted into the cover body through the air outlet and the first through hole, passes through the inner cavity of the cover body and then penetrates through the rotor through the vent hole to be exhausted; due to the fact that gas flows along the silencing cavity, the inner cavity of the cover body and the vent hole in sequence after being exhausted from the air cylinder, disturbance of airflow to a circulating oil way can be effectively reduced, circulating flow of lubricating oil is smoother, stability of oil return and oil spitting is guaranteed, a good lubricating effect is provided for a pump body assembly, and running reliability of the compressor is improved.

The invention discloses a large-section tunnel excavation supporting system crossing a fault fracture zone, which comprises a plurality of self-propelled advanced large pipe sheds arranged on a tunnel vault before excavation and a plurality of advanced small pipes arranged on a tunnel side wall, after excavation of each layer is completed, steel-like fiber concrete is preliminarily sprayed on the top arch and the side wall of the corresponding excavation face, system anchor rods are constructed, then multiple steel supports are arranged on the top arch and the side wall of the corresponding excavation face in the longitudinal direction of the tunnel, and a plurality of cover-weight-free consolidation grouting holes are evenly formed in the top arch and the side wall of the whole section for grouting; and then a plurality of system anchor rods and drainage systems are evenly arranged on the top arch and the side wall of the excavation face, then reinforcing meshes are arranged between the steel supports, and then secondary injection of imitated steel fiber concrete is conducted. The problems that in the prior art, when a tunnel crosses a fault fracture zone, roof fall and collapse accidents are prone to occurring through common excavation supporting measures, and the construction safety and the project progress are seriously affected are solved.

The invention belongs to the technical field of geological prospecting, and particularly discloses an exploration method for constructing an altered rock type gold mine in a shallow coverage area, which comprises the following steps of: firstly, optimizing a working area by using regional geochemical prospecting abnormity, and gradually reducing a prospecting target area by using 1: 25,000 geochemical measurement, 1: 10,000 soil profile measurement and 1: 10,000 geological grass survey; identifying a linear negative topographic development section by using an unmanned aerial vehicle, quickly positioning a gold-bearing structure alteration zone by using a manner of stripping soil and adopting a detection sample, and performing ground surface control by using a groove exploration project; and a target position is predicted by combining the ore body grade, the ore body thickness and the product contour map of the ore body grade thickness by utilizing a structure superposition halo method, drilling engineering deep verification is carried out, and finally the topography and the landform are recovered to find out the shape, the occurrence, the scale and the resource potential condition of the gold mineralized body. The method is simple and convenient, small in environmental disturbance, low in cost investment and good in coverage area effect, the purpose of rapid prospecting is achieved, and an excellent gold ore prospecting effect is achieved in the Heidong region of the Qieemun Tagean, the cliff and the Qieemun Tagean.

The invention discloses a self-regulation internal mold system for a prefabricated box girder, and relates to the technical field of prefabricated box girders. A displacement trolley is displaceably arranged at the top of the sliding seat cross beam; the side edge top plate and the side edge bottom plate are assembled by arranging the combined top plate, and the situation that an existing adjusting formwork is difficult to adapt to different widths in the pouring process is avoided by adopting transverse plate overall assembly and sectional assembly; the phenomenon that concrete on the middle side below the bottom film is difficult to vibrate and exhaust is solved through segmented installation, the phenomenon that the concrete flows into the bottom film and is solidified under the cooperation of side edge connecting pieces, and consequently an adjusting joint of a formwork loses efficacy is reduced, and by arranging a sliding base cross beam and a centering support of a displacement trolley, the formwork can be stably adjusted. The load of the side edge top plate is completely transmitted to the sliding seat cross beam through the double-shaft adjusting cylinder assembly, disturbance to concrete below the bottom film is reduced in the pouring process, and cracks are prevented from being formed in the concrete pouring process.

The invention belongs to the technical field of tunnel engineering, and particularly relates to shield tunneling machine anti-drag slurry for stacked tunnel construction and a use method of the shield tunneling machine anti-drag slurry. According to the anti-drag slurry, bentonite, anhydrous Na2CO3 and water are used as main raw materials, a certain amount of a lubricant and a nanometer material are added into the slurry to prepare the anti-drag slurry, the stress condition between a shield tunneling machine shell and a soil body is monitored in real time, the grouting amount and the grouting pressure of the anti-drag slurry are dynamically adjusted according to the change of soil pressure, and therefore the anti-drag effect of the shield tunneling machine is achieved. The friction force between the shield tunneling machine shell and the surrounding soil body can be reduced, disturbance of the shield tunneling machine shell to the soil body is reduced, consolidation settlement of the soil body in the later period is reduced, and materials and methods are provided for stacked tunnel construction.

The invention relates to the technical field of tunnel construction, in particular to a cast-in-place pile drilling device for tunnel construction and a tunnel construction method.The cast-in-place pile drilling device for tunnel construction comprises a supporting module, a drilling module and a vehicle body, the supporting module is used for supporting and limiting, the drilling module is used for drilling in cast-in-place pile construction and arranged on the supporting module, and the drilling module comprises a sleeve; a first connecting rod is arranged in the sleeve. According to the drilling device, the first connecting rod is arranged in the sleeve, the first connecting rod, the second connecting rod and the third connecting rod can move downwards in sequence, drilling is conducted in sequence through the first drill bit, the second drill bit and the third drill bit, in this way, step-by-step drilling can be conducted according to needs, the drill bits do not need to be replaced during drilling, and rapid drilling of the cast-in-place pile is facilitated; and meanwhile, the first connecting rod, the second connecting rod and the third connecting rod can be retracted into the sleeve, so that the overall length of the drilling module can be reduced, transfer and transportation of the drilling device are facilitated, and meanwhile the height requirement for construction can be lowered.

The invention discloses a saline-alkali frozen soil multi-field synchronous monitoring device and method based on a weak reflection grating. The device comprises a temperature, humidity, salt and ice sensing module, a strain sensing module, an interlocking connector, a weak reflection grating demodulation module, a voltage stabilization direct current heating module and a data analysis and processing module. During monitoring, the temperature of the saline-alkali frozen soil is measured in the whole time period based on pulse temperature change and water-ice phase change through weak reflection grating sensing; the humidity and the ice content of the saline-alkali frozen soil are calculated through the pulse heating temperature time history curve; calculating the salt content of the saline-alkali frozen soil based on the wavelength reflectivity; calculating layered displacement of the saline-alkali frozen soil according to the relationship between strain and displacement; and correcting a multi-field monitoring data error by using a neural network. According to the invention, synchronous measurement of temperature, moisture content, salt content, ice content and deformation parameters of the saline-alkali frozen soil is realized, the problem of difficulty in synchronous measurement of multi-field parameters caused by unstable properties of the saline-alkali frozen soil is solved, and the system has the advantages of distribution, real-time performance and continuity.

The invention discloses a polymer dual-band refractive index sensor based on a continuous domain bound state and a manufacturing method of the polymer dual-band refractive index sensor. The sensor comprises a silicon dioxide substrate and polymer metasurface structure units distributed on the upper surface of the silicon dioxide substrate in an array mode. Each polymer metasurface structure unit comprises four positive polygonal cylinders and a cylinder, the four positive polygonal cylinders are identical in size, the positive polygonal cylinders and the cylinder are perpendicular to the silicon dioxide substrate, the positive polygonal cylinders are arranged in a matrix mode, and the cylinder is located in the center of the four positive polygonal cylinders. The introduction of the central cylinder not only breaks the structural symmetry to excite the quasi-BIC, but also enhances the coupling effect among the four straight square columns, thereby greatly improving the near-field enhancement effect. The refractive index sensor has the characteristics of double quasi-BIC sensing wavebands, high sensitivity, high Q value, polarization insensitivity and the like, and the detection efficiency, flexibility and accuracy of the refractive index sensor in the biomedical field are improved.

The utility model discloses an in-situ groundwater heavy metal pollution remediation device. Comprising two permeable reactive barriers arranged at intervals in the groundwater pollution plume runoff direction. A filling cavity is formed between the two permeable reactive barriers, and filling materials are arranged in the filling cavity. According to the utility model, a double-unit permeable reactive barrier is adopted to carry out an in-situ remediation method, the first unit is filled with a zeolite and volcanic rock composite filter material to adsorb and capture heavy metal pollutants, and the second unit is filled with an active charcoal composite filler to further efficiently adsorb residual heavy metals. In addition, a plant planting zone is constructed for planting heavy metal hyperaccumulation herbaceous plants, pollutants such as heavy metal in underground water are thoroughly removed through the absorption and stabilization effect of plants, and the underground water is purified. The device adopts stable, economic, efficient and safe active filler to adsorb and remove heavy metals in underground water, and has the advantages of efficient restoration, strong applicability, ecological environmental protection and the like.

The invention discloses a deep-sea micro-sampling robot, comprising a buoyancy block, a control device, a frame, a rope, a traveling device, a drilling device and a sample storage device; the buoyancy block is fixed on the frame to provide buoyancy, the control device is used to control the operation of the traveling device, the sampling device and the sample storage device, the traveling device generates a driving force by driving the traveling wheels at both ends of the traveling wheel rotating rod and the traveling wheel rotating rod installed under the frame, the drilling device drives the ultrasonic vibration motor and the drilling motor guided by the straight guide rail on the frame through the driving oil cylinder, thereby driving the sampling rod to take samples, the sample storage device stores the sampling rod by the sample storage tray, and then drives the dial device guided by the arc guide rail on the frame through the dial oil cylinder to cooperate with the spoon-shaped groove on the sample storage tray, and then cooperates with the resistor, so as to rotate the sample storage tray to replace the rod position and position it. The invention has a simple structure, is easy to implement, can flexibly swim in the deep sea and travel on the seabed, and can obtain deep-sea samples with low disturbance and low energy consumption.

The invention relates to the technical field of electronic product testing, in particular to an electronic equipment product dustproof testing device and method.The electronic equipment product dustproof testing device comprises an air blowing structure, a supporting frame and a box, the supporting frame is fixed to the bottom of the box, the air blowing structure is communicated with the box, the electronic equipment product dustproof testing device further comprises a discharging assembly and a replacement cavity, and the discharging assembly comprises a supporting table and a driving part; the supporting table is slidably arranged in the box body; the driving piece is used for driving the supporting table to move; the replacement cavity comprises a baffle and a replacement shell, the replacement shell is fixed to one side of the box body, and the baffle is arranged in the replacement shell in a sliding mode and used for sealing an opening between the replacement shell and the box body; the supporting table is further provided with a sealing plate, and the sealing plate is used for sealing the opening after the baffle is pushed away. Therefore, the contact time and the contact area of the product and the outside can be greatly reduced when the product is moved, the disturbance to the test environment is reduced, and the next test can be carried out more quickly.

The construction method comprises the following steps that S1, equipment enters a site, and pile positions are marked according to construction requirements; s2, the bottom end of the prefabricated pipe pile is not sealed, after the prefabricated pipe pile is pressed downwards to a designed bearing stratum at the pile position, the topsoil in the hollow part of the prefabricated pipe pile is taken out, and the soil taking depth exceeds the bottom end of the prefabricated pipe pile; or penetrating a force transmission hammer into the hollow part of the prefabricated pipe pile, and pressing the force transmission hammer and the prefabricated pipe pile to the designed bearing stratum; s3, filling materials are put into the hollow part of the prefabricated pipe pile in batches, a force transmission hammer with the length larger than that of the prefabricated pipe pile extends into the hollow part of the prefabricated pipe pile, the force transmission hammer extrudes the filling materials in a downward pressing, spinning or hammering mode, and the filling materials form a compacted expanded head at the bottom of the prefabricated pipe pile; and S4, concrete is poured into the hollow part of the prefabricated pipe pile to form an inner pile. The bottom of the prefabricated pipe pile is not sealed, holes are not guided in advance, the pile descending efficiency can be improved, and the pile end bearing capacity can be ensured after soil is taken in the hollow part of the prefabricated pipe pile.

The invention provides an intersecting shield interval protection construction method, which belongs to the technical field of building construction, and comprises the following steps: firstly, excavating an open cut foundation pit at an intersection, arranging a cast-in-situ bored pile and a crown beam as an enclosure structure in the foundation pit, and arranging a steel support system at the same time. And after the enclosure structure is completed, the foundation pit is excavated to the designed depth, and reinforced concrete supporting piles and pile top beams are constructed. And on the basis, a reinforced concrete protection plate is poured to form a sheet pile structure type protection structure system. And finally, foundation pit filling is completed in a backfilling mode. Before the shield passes through the cross point, a test section is arranged to collect related construction data, and preparation is made for subsequent formal tunneling. And in the actual shield tunneling process, the tunneling speed and the soil bin pressure are controlled, and synchronous grouting is conducted. And after crossing the cross point, arranging closed rings in the front and back areas, and carrying out wall back grouting by adopting double-liquid slurry. And finally, a geological radar is used for detecting the cavity and repairing, and the problem of mutual influence in up-down close-distance crossed tunnel construction is solved.

The invention provides a pumped storage power station inclined shaft TBM and an expanding excavation mechanical construction method. The TBM comprises a shield body, a conical expanding excavation cutterhead is arranged at the front end of the shield body, a main drive is arranged in the shield body, the conical expanding excavation cutterhead is connected with the main drive through a main bearing, and a plurality of front supports and rear supports are arranged on the peripheral sides of the front end and the rear end of the shield body respectively; the shield body between the front support and the rear support is provided with a thrust oil cylinder and a driving support shoe, and the pumped storage power station inclined shaft TBM creeps and advances under the cooperation of the front support, the rear support, the thrust oil cylinder and the driving support shoe. Besides, by means of the mechanical construction method of the pilot shaft and TBM expanding excavation, the problems that construction guidance and the hole forming body type are not easy to control, the excavated hole is poor in flatness, poor in safety and the like existing in excavation of a drilling and blasting method can be solved, excavation of a traditional drilling and blasting method is eliminated, the hole forming quality is improved, disturbance to surrounding rock is reduced, and potential safety hazards are reduced; safe and efficient excavation of the water diversion inclined shaft in the pumped storage power station is guaranteed, and the construction period of key lines is shortened.

The invention relates to the technical field of offshore pile foundation protection, and discloses an offshore wind power pile foundation anti-scouring device which comprises a fixed sleeve, a movable sleeve and a spoiler. The fixing sleeve comprises a sleeve, a supporting plate and a water baffle, the sleeve is provided with a center hole allowing the pile foundation to penetrate through, the supporting plate and the water baffle are arranged at the two ends of the sleeve at intervals in the axial direction of the center hole, the supporting plate is used for being supported on a seabed, and the water baffle is perpendicular to the center line of the center hole; the movable sleeve is rotationally assembled on the outer side of the sleeve around the center line of the center hole, the spoiler is fixedly assembled on the outer wall, away from the fixed sleeve, of the movable sleeve and used for driving the movable sleeve to rotate around the fixed sleeve, and the maximum distance between the spoiler and the center line of the center hole is larger than that between the water baffle and the center line of the center hole. By simultaneously weakening the influence of three factors of downstream water flow in front of the pile, water flow carrying around the pile and trailing vortex disturbance behind the pile on the pile foundation, the anti-scouring purpose is achieved, and the safety of the wind power pile foundation is improved.

The invention relates to the technical field of environmental geological engineering, in particular to test equipment and method for simulating stratum deformation caused by confined water exploitation and recharge, and the test equipment comprises a model box frame, a cross elevator, a water suction pump, a sedimentation tank and a model box, and is characterized in that the inner wall of the model box frame is fixedly connected with organic tempered glass; a counter-force beam is fixedly connected to the top of the model box frame, three mechanical jacks are fixedly installed on the top of the inner side of the counter-force beam, a plurality of internal water injection pipes which are distributed at equal intervals are laid on the inner side of the model box frame, and a steel wire hose is connected between every two adjacent internal water injection pipes in a threaded mode. Through cooperation of the structures, the large-scale physical model test device which is rich in function, reasonable in design, practical and feasible is formed, and the process of ground subsidence and springback caused by dynamic changes of multi-layer pressure-bearing water levels can be simulated.

The invention discloses a comb-shaped shovel wheel rotating type collecting vehicle and method for seabed ore particles. The collecting vehicle comprises an ore particle collecting device, an ore box in butt joint with the ore particle collecting device and an ore particle conveying channel connected with the ore box. The ore grain collecting device comprises a conveying belt, a comb-shaped shovel, soft protrusions, a net bag, a driving motor and a synchronous belt. After the collection vehicle arrives at an ore collection operation area, a certain rotating speed of the conveying belt, a certain advancing speed of the collection vehicle and a certain depth of the comb-shaped shovel into soil are set, the comb-shaped shovel is carried by the conveying belt to perform periodic rotation operation while the collection vehicle advances, and polymetallic nodule mineral particles are excavated through interaction of the comb-shaped shovel and seabed surface sediments; the comb-shaped shovel can directly excavate ore grains through interaction of a mechanical structure and sediments at the maximum rotating speed of 10 rpm, compared with a traditional hydraulic method, the collecting vehicle can effectively collect fully-buried and irregular ore grains, and the seabed ore grain collecting operation efficiency is improved.

The invention relates to a triaxial test universal sample preparation and high-frequency vibration loading integrated device and method, the device comprises a main body loading frame, a sample preparation suite, a loading suite and a loader, and the loader comprises a voice coil motor; the main body loading frame comprises a supporting plate, a supporting rod and a loading ejector rod, a working space is formed between the supporting plate and the supporting rod, one end of the loading ejector rod is connected with the loader, and the other end of the loading ejector rod extends into the working space; a soil sample is placed in the sample preparation suite, and the loading ejector rod loads static force or surface vibration to the sample preparation suite; a sample prepared in the sample preparation suite is placed in the loading suite, and the loading ejector rod loads static force or power to the loading suite. Compared with the prior art, the sample preparation and loading of the triaxial test sample are realized through the sample preparation suite and the loading suite, and the operation is convenient; and the loader adopts electric loading, so that the problems of compactness, stable quality and the like during sample manufacturing can be solved, and the test error can be effectively reduced while manpower is saved.

The invention discloses a bimorphic high-speed unmanned aerial vehicle capable of taking off and landing on the water surface and flying in ground effect and a control method, and belongs to the technical field of unmanned aerial vehicles, the bimorphic high-speed unmanned aerial vehicle comprises a vehicle body and a control device, the vehicle body is provided with an adjustable turbine jet driving mechanism and telescopic folding wings, and the tail of the vehicle body is provided with an empennage and a tail turbine jet driving mechanism. Meanwhile, the invention discloses a control method based on the two-form aircraft capable of taking off and landing on the water surface and flying in the ground effect, and the two-form high-speed unmanned aerial vehicle capable of taking off and landing on the water surface and flying in the ground effect and the control method are adopted. By adjusting the inclination angle, the distance and the height of the two front turbojet engines, operation and conversion of various forms of water sailing, ground running, ground effect flight and height flight are achieved, the use scenes of the unmanned aerial vehicle are greatly enriched, and the requirement for high-speed flight is met by adopting the telescopic folding wings.

The invention relates to the technical field of automobile manufacturing, in particular to an automatic assembling device and method for an automobile hydraulic bushing. Comprising a damping liquid tank, a lower stage bedplate, an upper stage bedplate fixedly installed on the lower stage bedplate, a first positioning table assembly movably installed on the lower stage bedplate, a second positioning table assembly fixedly installed on the lower stage bedplate, a steering assembly movably installed on the upper stage bedplate and a third positioning table assembly installed on the steering assembly. The steering assembly is used for driving the third positioning table assembly to rotate. The defoaming assembly and the vertical press-fitting assembly are integrated together, press-fitting of the outer pipe can be rapidly carried out after defoaming treatment, compared with the prior art, damping liquid cannot be disturbed by multiple moving parts in a large range, the situation that the liquid level of the damping liquid fluctuates is reduced, workpieces are effectively prevented from being exposed out of the liquid level of the damping liquid in the assembling process, and the assembly efficiency is improved. And the assembling quality is influenced.

The invention discloses a water rotation type paint spray booth wastewater treatment device, and belongs to the technical field of wastewater treatment.The water rotation type paint spray booth wastewater treatment device comprises a water flow buffering mechanism, a wastewater separation mechanism is arranged below the water flow buffering mechanism, and paint slag separation filter cloth is fixedly installed in the wastewater separation mechanism; a separation driving mechanism corresponding to the paint slag separation filter cloth is mounted on one side of the rear end of the wastewater separation mechanism, and a spraying separation mechanism is fixedly mounted on the separation driving mechanism; the bottom of the rear end of the wastewater separation mechanism is connected with a flow guide mechanism communicated with the wastewater separation mechanism; and the rear end of the flow guide mechanism is fixedly connected with a filtered water storage mechanism. By designing the water flow buffer mechanism, the water flow can be further buffered and dispersed, so that the impact force of the water flow entering the wastewater separation mechanism below is greatly reduced, the disturbance caused after the water flow enters the wastewater separation mechanism is further reduced, and the follow-up paint slag and impurity interception and separation effect is further ensured.

The invention discloses a high-stability ultra-long main shaft of a numerical control machine tool. The high-stability ultra-long main shaft comprises a shell I, a shell II and a rotating shaft, the first shell and the second shell are combined to form a main shaft shell, the rotating shaft penetrates into the main shaft shell, and a plurality of bearings are installed at the two ends of the rotating shaft. A first mounting part, a hollow part and a second mounting part are arranged in the main shaft shell, the hollow part at least accounts for 1 / 2 of the length of the main shaft shell, the first mounting part and the second mounting part are each provided with two clamping positions used for fixing bearings at intervals, and a sound sensor or / and a vibration sensor is / are arranged between the two clamping positions and used for detecting the states of the two bearings; the two opposite bearings located on the first installation part and the second installation part are located on the two sides of the hollowed-out part respectively, the hollowed-out part is defined to form a closed space, the first shell and the second shell are each provided with an air channel, one end of each air channel is connected with the hollowed-out part, and the other end of each air channel extends to the surface of the first shell and the surface of the second shell to be connected with an air nozzle. Gas is pumped out to form negative pressure in the hollow-out part, gas disturbance generated during rotation of the rotating shaft is reduced, gas in the hollow-out part is pumped out from the gas channel through an external device, negative pressure is formed in the hollow-out part, gas disturbance generated during rotation of the rotating shaft can be reduced, and the conditions of pressure rise caused by gas thermal expansion and the like can be reduced; and the stability of the spindle is further improved.