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37 results about "Penetration process" patented technology

High-bearing offshore wind power pile foundation structure and construction method thereof

The invention discloses a high-bearing-capacity offshore wind power pile foundation structure and a construction method thereof. The high-bearing-capacity offshore wind power pile foundation structure comprises a suction bucket, a vertical rod installed in an inner cavity of the suction bucket and coaxially fixed to the suction bucket, a stabilizing assembly dividing the inner space of the suction bucket into a plurality of independent cavities and a leveling assembly. By arranging the stabilizing assembly and the leveling assembly, the suction bucket is divided into a plurality of independent cavities through the stabilizing assembly, differential pressure leveling is conducted in a multi-cavity independent water pumping mode in the stage of preliminary contact with the seabed, the perpendicularity of the suction bucket in contact with the seabed is guaranteed, and in the stage of downward insertion of the bucket body part, a high-pressure nozzle is started again to conduct secondary posture fine adjustment; according to the dynamic deviation correcting device, the dynamic deviation correcting capacity is achieved in different time periods in the penetration process, the dynamic deviation correcting device can adapt to uneven local hardness of a seabed or slight drifting of the posture of a barrel body in the downward insertion process, inclined insertion and penetration failure caused by posture unbalance of the suction barrel are avoided, and the vertical bearing performance and the anti-overturning stability of a pile foundation are further enhanced.
Owner:HUANENG RUDONG BAXIANJIAO OFFSHORE WIND POWER GENERATION CO LTD +2

Intelligent monitoring method for pile foundation penetration process

The invention discloses an intelligent monitoring method for a pile foundation penetration process, and relates to the technical field of foundation pile foundations. In order to solve the problems that in the prior art, large errors and randomness exist in precast pile penetration monitoring, and large potential threats are likely to be caused to use of a pile body in the later period, the following technical scheme is provided: the method comprises the following steps of S1, pile body preparation, S2, equipment preparation, S3, machine in-place, S4, equipment testing, S5, monitoring data acquisition, S6, data analysis and S7, penetration calculation. S8, pile splicing in place and welding detection are conducted, S9, detection feedback and adjustment are conducted, and S10, single-pile penetration is completed. According to the method for intelligently monitoring penetration of the precast piles, real-time monitoring and feedback of the penetration depth, the penetration state and the penetration perpendicularity of the precast piles in the penetration process can be effectively guaranteed, and the butt-joint integrity and the butt-joint time of the two sections of precast piles in the pile splicing stage can be monitored at the same time.
Owner:CHONGQING UNIV

Intelligent detection device and method for detecting impermeability of high-performance concrete

The invention discloses an intelligent detection device and method for detecting the impermeability of high-performance concrete, and relates to the technical field of impermeability detection of high-performance concrete. According to the intelligent detection device and method for detecting the impermeability of the high-performance concrete, through mutual cooperation of a hydraulic rod, an impermeability detection mechanism, a driving mechanism, a containing seat mechanism and a water supply mechanism, the driving mechanism can drive the impermeability detection mechanism to be in intermittent contact with different positions of the top surfaces of a plurality of high-performance concrete test blocks at the same time; the impermeability detection mechanism is used for performing humidity detection on multiple points of the top surface of the high-performance concrete test block, and the impermeability of the high-performance concrete test block is evaluated through comprehensive detection of the multiple points, so that accidental errors of single-point detection are avoided, and humidity change characteristics of different areas of the top surface of the test block in the permeation process can be dynamically captured; the comprehensiveness of anti-permeability performance evaluation is improved, so that the anti-permeability performance detection result is more accurate and reliable.
Owner:NANTONG DONGHUA BUILDING MATERIALS CO LTD

Method for preventing weathering of high-thick brick city wall surface layer

ActiveCN117418716BBrickChemical reaction
The application discloses a high-thick-brick city wall surface layer weathering prevention method and belongs to the field of historical building protection. The weathering prevention method controls the chemical reaction of a hydrophobic material, reduces the mass of hydrophobic substances generated by the chemical reaction in the penetration process, avoids the influence of the penetration process of weak hydrophobic substances on the penetration coefficient of the city wall surface layer bricks, prolongs the penetration time of the hydrophobic material, improves the penetration depth of the hydrophobic material in the city wall surface layer, weakens the dry shrinkage reciprocating change, realizes the deformation and stress coordination of the waterproof layer of the city wall surface layer and the internal wall body, avoids the stress concentration phenomenon of the waterproof layer shell, further achieves the purpose of preventing the weathering effect of external rain and snow immersion into the city wall surface layer and limiting the salt accumulation caused by the evaporation of the water in the city wall, realizes the purpose of deeper penetration of the hydrophobic material into the city wall, and solves the weathering diseases of the high-thick-brick city wall.
Owner:TIANJIN UNIV

An experimental device and method for exploring the friction characteristics between a metal projectile and target particles during the penetration process

An experimental device and method for exploring the friction characteristics between metals and particles, belonging to the technical field of experimental equipment. The present invention solves the problem in the prior art of lacking the research on the friction coefficient and friction characteristics between the target and the projectile. The sample groove is fixedly installed on the support bracket, the fixed pulley assembly is installed on the frame, the counterweight and the support bracket are respectively hoisted on both sides of the fixed pulley assembly through the connecting rope, and the up and down movement of the support bracket along the frame is realized through the counterweight, the connecting rope and the fixed pulley assembly. A tension sensor is installed on the connecting rope between the support bracket and the fixed pulley assembly. The motor is fixedly installed on the upper part of the frame. The top end of the friction disc is coaxially fixedly installed with an input shaft. The output shaft, the connecting shaft and the input shaft of the motor are coaxially fixedly connected in sequence from top to bottom, and a torque sensor is installed on the connecting shaft. The friction disc is circumferentially rotatably installed on the frame and is arranged directly above the sample groove, and a temperature sensor is installed at the lower part of the friction disc.
Owner:HARBIN INST OF TECH

A method for constructing a penetration physical model considering self-sharpening

The present invention provides a method for constructing a self-sharpening penetration physics model. The method first models the target plate and obtains its material parameters. Next, the governing equations for target plate penetration are established. The projectile is then modeled and the governing equations for projectile erosion are established. The projectile-target interaction is then described, and the momentum equation for the projectile tail and the penetration pressure equation for the projectile head are established. Finally, the governing equations for projectile erosion, the momentum equation for the projectile tail, and the penetration pressure equation for the projectile head are combined to obtain a self-sharpening penetration physics model. The present invention is well-conceived and can be widely applied to various new self-sharpening armor-piercing materials, efficiently and accurately describing the penetration process.
Owner:INST OF MECHANICS CHINESE ACAD OF SCI

Anti-deformation mounting clamp for frame of photovoltaic module

The invention relates to the technical field of photovoltaic modules, and discloses a photovoltaic module frame anti-deformation mounting clamp which comprises a bearing seat, the bottom of the bearing seat is fixedly connected with a first fixing plate, and two bolts penetrate through the first fixing plate. When a fixing mechanism, specifically a fixing device, is arranged, firstly, a bolt penetrates through a first fixing plate and a second fixing plate, in the penetrating process, the inner wall of a bolt hole of the first fixing plate extrudes a limiting block in a first mounting groove in the outer wall of the bolt, and the limiting block compresses a spring piece and shrinks into the first mounting groove; a first mounting groove is aligned with a first limiting groove, a spring piece releases elastic potential energy to push a limiting block to be embedded into the first limiting groove, circumferential limiting of a bolt is formed, threaded fastening force of a nut is matched, a first fixing plate and a second fixing plate are tightly attached to the color steel tile, and through elastic embedding of the spring piece and the limiting block, bolt loosening caused by vibration is effectively resisted; and connection failure of the bearing seat and the color steel tile mounting base surface caused by bolt looseness is avoided.
Owner:中国电建集团贵州工程有限公司

Design method of energetic composite protective structure and protective structure

The application provides a design method of an energetic composite protective structure and the protective structure, and the design method comprises the following steps: determining a jet penetration velocity change rate u according to a jet penetration mechanism; determining a reaction sensitivity g of a reaction material according to a reaction mechanism of the anti-penetration performance of the reaction material; determining a protection efficiency of the reaction material by judging the relative size of the velocity change rate u in the penetration process and the reaction sensitivity g of the reaction material; and designing the protective structure according to the protection efficiency of the reaction material. The protective structure comprises a protective layer shell, a reaction material shell and a reaction material layer arranged in sequence; and the reaction material layer is designed in a modular manner. The application has the advantages that: the violent chemical reaction of the reaction material under strong impact can be fully utilized to interfere with the penetration of the shaped jet, and the protection efficiency of the reaction material on the shaped jet is further improved by improving the reaction material formula, adding a reaction material constraint shell and other means.
Owner:CHINESE PEOPLES LIBERATION ARMY KET FORCE ENG DESIGN INST

Energy-saving glass processing equipment and processing method thereof

The invention relates to the technical field of glass processing, in particular to energy-saving glass processing equipment and a processing method thereof. The method has the beneficial effects that the energy consumption in the permeation process can be reduced while the permeation efficiency of a molten material is improved. Energy-saving glass processing equipment comprises a box body, connecting blocks are fixedly connected to the front side and the rear side of the interior of the box body, a vacuum device is fixedly connected between the two connecting blocks, rotating blocks are rotatably connected to the two connecting blocks, rotating arms are slidably connected to the rotating blocks, and a centrifugal part is rotatably connected between the two rotating arms; the upper side of the centrifugal part is detachably and fixedly connected with a material injection part, the material injection part is slidably connected to the feeding frame, the centrifugal part comprises a bottom block, the bottom block is detachably and fixedly connected to a vacuum device, a top block is placed on the upper side of the bottom block, clamping blocks are arranged at the four corners of the top block, the four clamping blocks are rotatably connected to the bottom block, and the upper side of the top block is slidably connected with a heating cover plate. A hole plate is fixedly connected to the upper side of the interior of the ejector block, and a plurality of through holes are evenly formed in the hole plate.
Owner:JIANGXI ZHONGHE TEMPERED GLASS CO LTD

A device and method for measuring three-dimensional deformation field of a projectile body in a penetration process

The application discloses a kind of three-dimensional deformation field measuring device and measuring method of projectile body in penetration process, it is related to projectile body penetration test technical field, its technical solution key points are: including: light gas gun, for launching solid projectile;Special target store, its lateral wall is equipped with observation window, inside is equipped with target plate and the projectile to be measured fixed on target plate;Three-dimensional digital image acquisition equipment, symmetrically arranged outside observation window, including two high-speed cameras of synchronous trigger, matching lens, high-brightness light source and synchronous trigger;Magnetic speed measuring instrument, set in the tail of the barrel of light gas gun;Data processing equipment is used to receive the image sequence collected by three-dimensional digital image acquisition equipment, based on calibration parameter calculation the three-dimensional displacement field of the surface of the projectile to be measured, full-field strain field and velocity field, visual output deformation evolution process.The application can realize the non-contact, high space-time resolution measurement of three-dimensional dynamic deformation field of projectile body itself in the transient process of projectile body penetrating target plate.
Owner:BEIJING INST OF TECH

A device for simulating suction bucket foundation penetration in centrifugal model tests

The present invention provides a device for simulating the penetration of a suction bucket foundation in a centrifugal model test, comprising a model box, a suction bucket model disposed therein, the suction bucket model comprising a suction bucket and a connecting rod, a penetration device disposed on the top of the model box, the top end of the connecting rod being movably connected to the penetration device; the suction bucket being connected to a vacuum system, soil being disposed at the bottom of the suction bucket, and water being disposed at the top of the soil; the penetration device comprising a limiting groove located outside the model box, a driving rod being disposed within the limiting groove, the driving rod being connected to an electromagnetic adsorption device located within the model box after passing through the top of the model box, a guide cover being connected below the electromagnetic adsorption device, and the top end of the connecting rod being located within the guide cover. By providing the penetration device, displacement deviations during the penetration process can be dynamically corrected, enabling the device of the present invention to continuously perform tests in a centrifugal state.
Owner:EAST CHINA JIAOTONG UNIVERSITY

Penetration method and system based on feedback perception of tunnel boring machine and storage medium

The invention discloses a penetration method and system based on feedback perception of a tunnel boring machine and a storage medium. The method comprises the steps of model construction, specifically, a discrete element simulation model capable of being used for describing the interaction process of a penetration probe and karst surrounding rock is constructed; simulation and calculation are carried out, step-by-step loading simulation is carried out based on a discrete element method, a penetration probe continuously acts on the surrounding rock model containing the filling karst cave structure, data of the penetration process are recorded, related energy sub-items are calculated, and a risk index is calculated in combination with a fracture index; and optimization control: performing feedback control according to the risk index. The system comprises a construction unit, a penetration simulation unit, a calculation unit and a control optimization unit. A computer program is stored in the storage medium, and the steps of the penetration method are achieved when the program is executed by a processor. According to the invention, the crack evolution and energy release process when the shield cutter penetrates into the filling karst cave area can be simulated. The method can be widely applied to the technical field of tunnel engineering.
Owner:SUN YAT SEN UNIV

Test apparatus and test method for confirming soil improvement effect

To save the labor of measuring work by eliminating the replacement of equipment.SOLUTION: In this testing device 1 for confirming the soil improvement effect, a measuring probe 3 is installed on the tip of a penetration rod 2. In the measurement probe 3, a tip cone 4 used for a dynamic cone penetration test is provided at a tip, an electrode portion 5 including an electrode 6 used for electric logging on an outer peripheral surface is provided above the tip cone 4, an outer diameter of the electrode portion 5 is formed to be smaller than an outer diameter of the tip cone 4, an axial center of the tip cone 4 and an axial center of the electrode portion 5 are eccentric, and the electrode 6 is disposed on the outer peripheral surface on an eccentric side. Since the axial centers of the tip cone 4 and the electrode part 5 are made eccentric and the electrode 6 is arranged on the outer peripheral surface on the eccentric side, the electrode 6 is surely brought into contact with the hole wall surface in the penetration process of the measuring probe 3, and electric logging can be performed.SELECTED DRAWING: Figure 1
Owner:TODA CORP +2

Portable penetrometer support for concrete strength detection

The utility model relates to the technical field of detectors, and discloses a portable penetrometer support for concrete strength detection, which comprises a fixing plate, a telescopic mechanism is arranged at the bottom of the fixing plate, a sliding mechanism is arranged in the middle of the fixing plate, a rubber handle is fixedly connected to the front side of the fixing plate, and the rubber handle is fixedly connected to the rear side of the fixing plate. A hammer head is fixedly connected to the top of the rubber handle, the telescopic mechanism comprises nuts, threads on the outer walls of the multiple nuts are connected to the four corners of the bottom of the fixing plate, and sleeves are connected to the outer walls of the multiple nuts in a threaded mode. Preliminary height adjustment is achieved through threaded fit of a nut and a sleeve in the telescopic mechanism, telescopic positioning of the multi-stage telescopic legs of the telescopic assembly is achieved through cooperation of spring buckles and fixing holes, the contact area is increased through cooperation of the multi-stage telescopic legs and the supporting claws, the stability of the support on the rugged surface is improved, and it is ensured that the penetration process is stable.
Owner:CENTURY DONGHUA ARCHITECTURAL PLANNING & DESIGN CO LTD

Tunneling method, system and storage medium based on tunnel boring machine feedback perception

The application discloses a kind of based on tunnel boring machine feedback sensing's penetration method, system and storage medium, the method comprises: model construction, the discrete element simulation model that can be used to describe the interaction process of penetration probe and karst surrounding rock is constructed;Simulation and calculation, based on discrete element method, gradually loading simulation is carried out, penetration probe continuously acts on the surrounding rock model containing filling cave structure, the data of penetration process are recorded and the related energy subentry is calculated, and the risk index is calculated in combination with fracture index;Optimization control, feedback control is carried out according to risk index.The system comprises: construction unit, penetration simulation unit, calculation unit and control optimization unit.A kind of storage medium, computer program is stored, program is executed when processor realizes the steps of penetration method as described above.The application can simulate the fracture evolution and energy release process when shield cutter penetrates filling cave area.The application can be widely applied in the technical field of tunnel engineering.
Owner:SUN YAT SEN UNIV

Steel pipe pulling and storing device

The application provides a steel pipe traction storage device, and relates to the technical field of drilling equipment. The steel pipe storage module is used for storing a flexible steel pipe. The first steel pipe port of the power module is opposite to the storage port of the steel pipe storage module, and is used for providing power for the flexible steel pipe to penetrate into a target object. The target object includes a stratum. The power source for driving the flexible steel pipe to penetrate is arranged in front in the embodiment of the application. Therefore, unnecessary stress links of the flexible steel pipe in the penetration process can be reduced, the loss of the penetration power can be reduced, and the flexible steel pipe can be prevented from being broken.
Owner:ZHUHAI SAILAI TECHNOLOGY CO LTD

Method for constructing penetration physical model considering self-sharpening

The invention provides a method for constructing a penetration physical model considering self-sharpening, which comprises the following steps of: firstly, modeling a target plate to obtain material parameters of the target plate; secondly, establishing a control equation that the target plate is penetrated; modeling the projectile, and establishing a control equation that the projectile is eroded; thirdly, the projectile-target interaction is described, and a momentum equation of the projectile tail and a penetration pressure equation of the projectile head are established; and finally, combining the control equation that the projectile is eroded, the momentum equation of the tail part of the projectile and the penetration pressure equation of the head part of the projectile to obtain a self-sharpening-considered penetration physical model. The method is reasonable in conception, can be widely applied to various novel self-sharpening armor penetrating materials, and can efficiently and accurately describe the penetration process.
Owner:INST OF MECHANICS CHINESE ACAD OF SCI

A sinking construction system and construction method for a bucket foundation

The present invention belongs to the field of bucket foundations for offshore wind turbines, and provides a sinking construction system and a construction method for a bucket foundation. The system includes a monitoring system, a vacuum pump system, a hydraulic system, a leveling system, and a vacuum pump suction system. The multi-system collaborative intelligent operation of the present invention improves the hoisting work efficiency of the bucket foundation. The present invention plays an important role in the penetration of the bucket foundation, especially in the suction penetration stage. Through real-time monitoring and dynamic leveling, it ensures the reasonable and correct attitude of the bucket body during the penetration process of the bucket foundation, and solves the problem of attitude control during the sinking construction of the bucket foundation. After the bucket foundation is penetrated and installed, the present invention realizes automatic separation and rapid recovery of the installation device, greatly improving the installation construction efficiency of the bucket foundation.
Owner:EAST CHINA JIAOTONG UNIVERSITY

Screw mounting die

The utility model discloses a screw mounting mould, which relates to the technical field of door and window assembling tools, solves the problem that an aluminum-coated plastic window is difficult to assemble by adopting a process of mounting and fastening sash outer aluminum from an opening in a hidden manner, and comprises a mould main body, a sash frame plastic section bar and the sash frame outer aluminum which are connected through a plurality of screws, and the mould main body is matched with the sash frame plastic section bar. The mold body is used for achieving assembly of a plurality of screws, at least one limiting through hole is formed in the mold body, and when the screws are assembled through the mold body, any limiting through hole is coaxial with one assembly hole of a sash stile plastic profile and communicates with one screw groove of sash stile outer aluminum. Through the screw mounting die, the penetration of the screw is limited, and in the penetration process of the screw, the mounting direction of the screw is limited by the inner wall of the limiting through hole, so that collision between the screw and a plurality of layers of partition plates is effectively avoided, and the assembly efficiency of the screw is improved.
Owner:HARBIN SAYYAS WINDOWS

High-speed electric spark small hole machining penetration detection method based on sound signals

A high-speed electric spark small hole machining penetration detection method based on sound signals comprises the steps that the sound signals in the high-speed electric spark small hole machining process are collected, noise reduction and filtering are conducted, and then the penetration occurrence effective rate is calculated through sliding counting; and multi-source data fusion is carried out according to the penetration occurrence effective value sequence, the machining position and the voltage signal, the starting time point and the ending time point of the penetration process are comprehensively judged, a machining stop instruction and an electrode rollback movement instruction are generated, and penetration detection and hole site machining are achieved. According to the method, the sound signals generated in the high-speed electric spark small hole machining process are collected and processed in real time, the occurrence moment of penetration is judged based on the change of the characteristics of the sound signals before and after penetration, comprehensive judgment is conducted in combination with a multi-source data fusion method, and therefore penetration detection is achieved; the problem that an original method is poor in reliability and redundancy is solved.
Owner:SHANGHAI JIAOTONG UNIV

Intelligent detection device and method for detecting impermeability of high-performance concrete

The application discloses an intelligent detection device and method for detecting the impermeability of high-performance concrete, and relates to the technical field of high-performance concrete impermeability detection. The device and method are characterized by the cooperation between a hydraulic rod, an impermeability detection mechanism, a driving mechanism, a containing seat mechanism and a water supply mechanism. The driving mechanism can drive the impermeability detection mechanism to intermittently contact the top surface of multiple high-performance concrete test blocks at different positions. The impermeability detection mechanism is used to detect the humidity of multiple points on the top surface of the high-performance concrete test blocks. The impermeability of the high-performance concrete test blocks is evaluated through comprehensive detection of multiple points, which can avoid accidental errors caused by single-point detection, dynamically capture the humidity change characteristics of different areas on the top surface of the test blocks during the penetration process, improve the comprehensiveness of the impermeability evaluation, and make the impermeability detection results more accurate and reliable.
Owner:NANTONG DONGHUA BUILDING MATERIALS CO LTD

Penetration resistance prediction method and system for suction bucket foundation in sand

The present invention discloses a method and system for predicting the penetration resistance of a suction-type barrel foundation in sand, which belongs to the field of offshore wind power suction-type barrel foundation soil sinking construction. The method and system include: based on a suction-type barrel foundation in sand, by evaluating drainage conditions, clarifying the penetration characteristics of the suction-type barrel foundation, obtaining the outer friction resistance, inner friction resistance and end bearing capacity of the suction-type barrel foundation, and predicting the drainage penetration resistance of the suction-type barrel foundation. The present invention is based on the limit equilibrium theory, takes into account the enhancement of the effective stress of the barrel end soil caused by side wall friction, and is more accurate in predicting the deadweight penetration depth; at the same time, it takes into account the seepage characteristics caused by sand drainage during the barrel foundation sinking process, takes into account the reduction of the effective stress of the soil inside and at the barrel end due to seepage, and the increase of the effective stress of the soil outside the barrel. The force analysis conforms to the actual situation of the barrel foundation, and the prediction of the penetration resistance during the suction penetration process is closer to the actual situation.
Owner:TIANJIN UNIV

Multi-point resistance inspection method and multi-point resistance inspection device

The invention provides a multi-point resistance inspection method or a multi-point resistance inspection device, which can reduce the time and man-hour for measuring the resistance of an inspected stator. The multi-point resistance inspection method uses a multi-point resistance inspection device having multi-point probe units (20, 30) having a plurality of elastically supported probes (21, 31) on the lead side and the opposite side of a stator (10) to be inspected, the multi-point resistance inspection method including: a film penetration step in which the plurality of probes (21, 31) are elastically supported by the multi-point probe units (20, 30), and the plurality of probes (21, 31) are elastically supported by the multi-point probe units (20, 30); the plurality of probes penetrate through the insulating films of the plurality of coil ends (12) at the lead wire side and the opposite side of the detected stator at the same time to form a plurality of measuring parts; and a resistance measurement step in which, while holding the plurality of probes penetrating the insulating film, a current is made to flow through the power line of the stator to be inspected, and the probe corresponding to each measurement site is switched to measure the resistance.
Owner:TOYOTA JIDOSHA KK

Civil air defense perforated casing pipe welding structure

The utility model provides a civil air defense perforation sleeve welding structure which comprises a reinforced concrete wall and a butt joint pipe, the right end of the butt joint pipe is fixedly connected with a pasting box, and an elastic ring is arranged in the pasting box. In order to solve the problems that a pipeline needs to enter the reinforced concrete wall and the reinforced concrete wall is collided by reinforcing steel bars in the process that the pipeline penetrates through the reinforced concrete wall due to the influence of light rays in the wall, the utility model has the advantages that the structure is reasonable, and the practicability is good; the operating rod enters a hole of the reinforced concrete wall, and after the other end of the reinforced concrete wall observes the position of the guide rod, the guide rod is sleeved with the pipeline, so that the pipeline is pulled to penetrate through the reinforced concrete wall, and abrasion of steel bars in the reinforced concrete wall to the pipeline can be avoided.
Owner:NANTONG XINGZHAO CIVIL AIR DEFENSE EQUIP CO LTD

Dynamic sand-dust coupled distribution box sealing test device

The invention discloses a dynamic sand-dust coupled distribution box sealing test device, and relates to the technical field of distribution box detection equipment. The device comprises a detection shell, a power distribution box body is arranged in the detection shell, and a particle detector is installed in the power distribution box body; and an environment simulation assembly is arranged in the detection shell. Through the dynamic sand-dust coupling test device, multi-dimensional sealing performance detection of the distribution box in a complex environment is achieved, the device simulates the impact and permeation process of sand-dust particles on the distribution box body through the synergistic effect of a centrifugal fan, a spray head and a rotating assembly, the problem that a traditional static detection method cannot reflect the real working condition is solved, and the test efficiency is improved. Meanwhile, the inclination angle adjusting assembly and the atomizer are introduced, so that different mounting postures and environment humidity conditions can be simulated, the accuracy and applicability of a detection result are remarkably improved, and comprehensive and reliable technical support is provided for sealing performance evaluation of the distribution box.
Owner:ZUNYI INST OF PROD QUALITY INSPECTION & TESTING

Wafer groove high-precision filling method based on airflow assistance

The invention belongs to the field of electronic packaging, and particularly discloses a wafer groove high-precision filling method based on airflow assistance, and the method specifically comprises the steps: filling a wafer groove in a substrate with nano-silver paste through employing an ink direct writing technology, and enabling the nano-silver paste to be uniformly spread in the wafer groove through cooperation with an airflow-assisted filling technology; carrying out laser sintering on the filling material by adopting a gradient sintering process; and repeating the steps according to the filling times until filling is finished, and finally performing high-temperature laser sintering at 330-380 DEG C to optimize the temperature resistance of the nano-silver paste. According to the method, auxiliary filling is carried out in cooperation with airflow while filling of the nano-silver paste is carried out, the nano-silver paste can be assisted to flow in a wafer groove, distribution of the nano-silver paste is more uniform, holes are prevented from being generated in the permeation process, meanwhile, in cooperation with the gradient sintering technology, wafer damage can be avoided, meanwhile, the curing efficiency is improved, and the product quality is improved. And the structure of the sintered material is more uniform.
Owner:HUAZHONG UNIV OF SCI & TECH

Concrete strength detection device

ActiveCN224231525UInvestigating material hardnessPenetration forceClassical mechanics
The utility model provides a concrete strength detection device which comprises a shell and a guide sleeve, and the guide sleeve is elastically connected with the shell; a force measuring sensor and a displacement sensor are arranged in the shell at intervals, a probe is arranged in the guide sleeve, the end part, deviating from the shell, of the probe penetrates through the guide sleeve, and the end part, close to the shell, of the probe is connected with the force measuring sensor; the force measuring sensor is configured to detect the penetration force of the probe penetrating into the concrete, and the displacement sensor is configured to detect the compression displacement of the guide sleeve in the probe penetration process; the strength of the concrete is the ratio of the penetration force to the penetration depth of the probe, and the penetration depth is the compression displacement of the guide sleeve. The detection device provided by the utility model is convenient to carry, provides convenient detection conditions for existing concrete strength detection, and is helpful for improving the detection precision at the same time.
Owner:CHINA RAILWAY CONSTR HEAVY IND

Auxiliary mechanism for film penetration of drying oven

The utility model discloses an auxiliary mechanism for film penetration of a drying oven, and belongs to the technical field of film material drying. The auxiliary mechanism comprises a drying oven main body for drying a film material; the film penetrating mechanism is arranged at the discharge port of the drying oven main body and can pull a film material through a high-temperature-resistant traction rope to guide and convey the film material to the discharge port from the feed port of the drying oven main body; the film penetrating mechanism comprises a mounting plate fixed to one side of a discharging port of the drying oven body. The first transverse rod is transversely arranged on the mounting plate; and the connecting plate is fixedly connected with the first cross rod. According to the auxiliary mechanism for film penetration of the drying oven, film penetration work of a film material can be carried out under the condition that the drying oven body is not cooled, equipment can be carried out without shutdown, the working efficiency can be effectively improved, an operator does not need to enter the drying oven during film penetration, the film penetration process is simpler and more convenient, and due to the fact that film penetration can be carried out without cooling, the film penetration efficiency is improved. And the initial section of the film material can also be dried, the cost is saved, and waste is avoided.
Owner:大阳(苏州)智能装备科技有限公司

Model test device for studying penetration process of towing anchor in soil bed

The utility model belongs to the technical field of ocean engineering, and discloses a model test device for studying the penetration process of a towing anchor in a soil bed, which comprises a test box, one end in the test box is rotatably connected with a wind-up roll, the upper end and the lower end of the side wall of the other end are both fixedly provided with fixing blocks, and a threaded rod is rotatably connected between the two fixing blocks. A lifting block is in threaded connection with the threaded rod, a first fixed pulley is fixed to the lifting block, and a second fixed pulley is fixed to the fixed block at the upper end; the test soil sample is laid at the bottom of the test box; one end of the first rope is fixedly provided with a towing anchor model, the towing anchor model is placed on the test soil sample, the other end of the first rope bypasses the first fixed pulley and the second fixed pulley and is fixed with the tension sensor, the other end of the tension sensor is fixedly provided with a second rope, and the other end of the second rope is wound on the winding roller. Analysis and research are carried out by collecting the angle of the dragged posture of the dragging anchor in the penetration process and the dragging bearing capacity.
Owner:WUHAN UNIV OF TECH