216results about How to "Increased bending stiffness" patented technology

The invention discloses a prefabricated hole type Z-pin implanting method with protection, and belongs to the technical field of composite material Z-pins, and the method comprises the following steps: placing continuous Z-pins in an implanting head, penetrating through a roller group of the implanting head, a guide pipe and a hollow thin-wall steel needle, controlling the implanting head, enabling the hollow thin-wall steel needle to pierce a composite material structure, and rising, the continuous Z-pin discretization and the effective residence of the discrete Z-pin in the composite material structure are realized through the cooperation of the roller group and the auxiliary cutter, and Z-pin implantation is completed. According to the method, the Z-pin can be effectively protected in the implanting process, the implanting path of the Z-pin is guaranteed, discrete Z-pin with the specific length does not need to be prepared in advance, a foam prefabricated body does not need to be prepared, the application range of the Z-pin strengthening process is expanded, meanwhile, the implanting efficiency of the Z-pin is greatly improved, and practicability is good.

The invention relates to a high-temperature-resistant foam sandwich structure and a manufacturing method thereof, and belongs to the technical field of high-temperature-resistant composite materials. The high-temperature-resistant foam sandwich structure comprises a foam layer and panels arranged on the upper surface and the lower surface of the foam layer, the foam layer is made of fiber-reinforced polyimide foam, the panels are made of polyimide composite materials, and the foam layer and the panels are bonded through polyimide adhesive films. The high-temperature-resistant foam sandwich structure provided by the invention has the characteristic of light weight and excellent high-temperature mechanical bearing performance.

The invention relates to the technical field of fabricated building walls, and discloses a fabricated building sound insulation and heat preservation wall which comprises a foundation wall. A plurality of keels are installed at the top end of a foundation wall at equal intervals through expansion bolts, the top ends of all the keels are detachably connected with wall assemblies, and positioning assemblies are arranged in all the keels and used for installing the wall assemblies. The wall body assembly comprises a wall A, a wall B, a wall C and a wall D, the wall A, the wall B, the wall C and the wall D are sequentially spliced and combined to form the wall body assembly, and clamping assemblies are arranged at the joints of the wall A, the wall B, the wall C and the wall D; by arranging the arc-shaped grooves and the arc-shaped blocks, the wall A, the wall B, the wall C and the wall D are matched with one another in size, so that the wall body assembly is suitable for installation of base walls of various sizes, the assembly efficiency of workers on a construction site is improved, gaps between the wall bodies are connected more tightly, and under the action of the positioning assembly and the supporting assembly, the wall bodies can be conveniently and rapidly installed. And the wall body assembly and the foundation wall can be conveniently and rapidly installed by workers.

The invention discloses a steering loading system for a quarter suspension fatigue testing machine, which comprises a steering loading unit, a steering gear mounting seat and a steering gear mounted on the steering gear mounting seat, and is characterized in that the bottom end of the steering loading unit is connected with a universal coupling; the steering gear comprises a steering gear support arranged on the steering gear mounting seat, a gear transmission assembly is mounted on the steering gear support and comprises a gear shaft and a rack shaft which are connected in a meshed mode, the universal coupler is connected with the gear shaft, the two ends of the rack shaft are connected with clamps, and the clamps are connected with the universal coupler. The clamp is provided with a suspension to be tested, and the steering loading test of the two suspensions is realized at the same time through the driving of the steering loading unit. According to the steering loading system for the quarter suspension fatigue testing machine, steering loading testing can be carried out on two suspensions at the same time, the testing efficiency is remarkably improved, and the testing cost is reduced.

The invention discloses a construction method for excavating an upside-down well wall of a deep foundation pit under an eccentric compression working condition. The construction method is suitable for an asymmetric load scene that the soil covering height of one side of a vertical shaft is obviously larger than that of the other side of the vertical shaft. The method comprises the steps that firstly, grouting is conducted on the periphery of the shaft wall of a vertical shaft under the current ground, and a soil body reinforcing area is formed; then, a mouth locking ring beam is constructed at a shaft mouth of the vertical shaft, an upper structure comprising a retaining wall, a reverse pressing plate, a retaining wall ring beam and a plate support is upwards constructed on the mouth locking ring beam, and soil covering side earthwork is synchronously backfilled to the level ground elevation in the construction process; next, an upside-down well wall method is adopted for subsection downward excavation, an annular arch frame, angle braces and anchor rod supports are constructed after each section is excavated, and an upper ring beam and a lower ring beam are arranged at the horsehead position and connected with the adjacent arch frames through vertical supports; and finally, concrete bottom sealing is conducted on the shaft completion face. The anti-overturning moment is formed through the reverse pressing plate and synchronous backfilling, and the problem of well wall instability caused by eccentric loads is effectively solved in combination with a multi-stage supporting system.

The utility model discloses a gallium nitride output essential safety type power supply, including power supply body and bottom mounting plate, the casing bottom of power supply body is fixed with bottom mounting plate, still include guide and scatter mechanism, the guide and scatter mechanism includes top and exposes the groove, heat conduction silicon pad, double -faced wrong groove board, edge and exposes the groove, gantry clamping plate, lead touch piece, edge fin, bottom link and horn, through setting up guide and scatter mechanism and carry out heat dissipation improvement to the essential safety type power supply of gallium nitride semiconductor technology's application, and the top and exposes the groove of guide and scatter mechanism cooperation deep groove reduces the casing thickness of power supply body, and then combines heat conduction silicon pad and double -faced wrong groove board, forms the efficient heat conduction path and conducts heat dissipation outward, and simultaneously, the gantry clamping plate collocates lead touch piece and edge fin, constructs the multi -point three -dimensional heat dissipation surface of top surface and side surface formula, solves the casing heat dissipation blind area problem of power supply body, realizes the heat of power supply body and multi -point dispersion export.

The invention discloses an electric heavy truck and a frame assembly thereof, and belongs to the technical field of vehicle bearing systems. The frame assembly comprises two longitudinal beams arranged oppositely and a plurality of cross beams connected between the two longitudinal beams in a crossing mode. Wherein the longitudinal beams are integral beams, and the cross beams are arranged at intervals in the extending direction of the two longitudinal beams; the battery frame is connected with at least two cross beams arranged at intervals through connecting pieces, the battery frame is of a frame structure defined by a first rod body extending in the X direction, a second rod body extending in the Y direction and a third rod body extending in the Z direction, the X direction is the front-back direction of the frame, the Y direction is the left-right direction of the frame, and the Z direction is the up-down direction of the frame; the at least two second rod bodies of the battery frame are located under the cross beams connected with the second rod bodies; a closed ring beam structure is defined by the cross beams, the connecting pieces and the battery frame. The design requirements for rigidity and light weight can be met.

This utility model relates to the field of materials processing technology, and in particular to a high-strength, high-precision, low-density composite profile with an arc surface; it includes a hollow profile structure and a solid profile structure, which are bonded together by a mortise and tenon structure to form an alternating continuous profile structure; the hollow profile structure has an extruded arc-shaped hollow outer wall, filled with glass microspheres, and mortise and tenon grooves and overlapping surfaces at both ends; the solid profile structure has an arc-shaped solid body, with mortise and tenon blocks and overlapping grooves at the ends that match the trapezoidal mortise and tenon grooves. This composite profile, through the alternating splicing design of the hollow and solid profile structures combined with the trapezoidal interlocking structure of the mortise and tenon grooves and blocks, significantly improves the connection reliability and assembly efficiency.

A wind turbine blade made of basalt carbon fiber composite variable density material combination, including at least one blade unit assembled along the length direction of the blade, the density gradient increases from the blade tip to the blade root through the gradient distribution of material density and / or the gradient distribution of hollow structure, and adjacent blade units are detachably connected through non-threaded connection structure. The modular design of the blade solves the problem of land transportation of oversized blades, and the non-threaded connection (hand disassembly) improves the efficiency of on-site installation and eliminates the risk of thread loosening. Lightweight blade tip reduces starting torque, facilitates handling and assembly, and improves wind speed and power generation efficiency.

The invention relates to the technical field of magnetic suspension equipment, and provides a rotor structure and an assembly tool. The rotor structure comprises a core shaft and magnetic steel sleeved on the core shaft, the surface of the core shaft is recessed to form mounting grooves, the mounting grooves extend along the circumferential direction, the magnetic steel is arranged in the mounting grooves, titanium rings are arranged at two ends of the magnetic steel along the axial direction, one titanium ring is abutted between one side of the magnetic steel and the groove wall of the mounting groove on the corresponding side, and the other titanium ring is abutted between the other side of the magnetic steel and the groove wall of the mounting groove on the corresponding side. One titanium ring abuts against the magnetic steel, the other titanium ring abuts against the position between the other side of the magnetic steel and the groove wall of the mounting groove in the corresponding side, at least one of the two titanium rings forms a wedge-shaped titanium ring, and the width of the section of the wedge-shaped titanium ring is gradually reduced in the direction pointing to the axis of the mandrel along the circumferential face of the mandrel. According to the rotor structure provided by the invention, the pressing force in the axial direction can be generated between the wedge-shaped titanium ring and the groove wall of the mounting groove, so that the flexural rigidity of the rotor structure can be enhanced, the critical rotation speed of the rotor structure is improved, and the rotor structure has relatively good operation stability.

The utility model discloses a hollow arch board for building construction, including board main body, and board main body is integrally extruded by light material, the board main body is as a whole arch structure, and is equipped with arch toe on both sides, the board main body is hollow structure, and is equipped with a plurality of webs inside, and the web divides the board main body inside into multiple continuous rectangular, triangle or trapezoidal hollow cavities, the utility model discloses integrally extruded by light material such as PVC or aluminum alloy, has reduced the dead weight of board significantly, and the board is as a whole arch structure, and then combines the web set up inside, has formed the stable mechanical structure, can effectively disperse pressure, has avoided the problem that the bending stiffness of flat plate structure is low and can not satisfy the bearing demand.

This invention relates to a seismic energy-dissipating reinforcement device and method for reinforced concrete beam-column joints. The device includes: a first shape memory alloy (SMI) component located on the beam in the beam-column joint area; a second SMI component installed on the column in the beam-column joint area and connected to the first SMI component; and a sliding friction damper connecting the first and second SMI components at both ends. This invention ensures the rigidity of the beam-column joint using a shape memory alloy T-plate while simultaneously dissipating energy and limiting excessive displacement between the beam and column through a sliding friction damper, thereby preventing progressive collapse and enabling automatic repositioning of the joint after deformation, thus enhancing the reinforcement effect of the reinforced concrete beam-column joint.

The utility model relates to linear drainage ditch field discloses a modular linear drainage ditch, including the quantity is two ditch body and sets up the cover body on two ditch body upside, two ditch body opposite side left and right sides all are equipped with the connecting mechanism for connecting two ditch body, and the left and right sides of cover body all are provided with reinforcing mechanism, the connecting mechanism includes the two groups of clamping slots that set up in two ditch body opposite side left and right ends, the clamping piece for two ditch body alignment, and the locking piece that two clamping ditch body are locked, the utility model discloses, adopt modular splicing's mode not only convenient linear drainage ditch's transportation, improve the flexibility when installing simultaneously, set up the sealing ring between adjacent module can effectively avoid groundwater seepage, the setting of clamping piece can be convenient for the quick butt joint between two ditch body between adjacent, and the intercoordination between locking piece can complete fixed between two ditch body, ensure the reliability of two ditch body between connection.

The invention provides a secondary reinforcing device and method for a reinforced concrete beam without dismantling a reinforcing steel plate, the device comprises an anchoring part, a connecting steel bar and a reinforced concrete layer, the steel plate is attached to the surface of the concrete beam and the reinforced steel plate, and the steel plate and the concrete beam are connected and anchored through bolts; the anchoring parts are connected with the concrete beam in an anchoring mode, meanwhile, the anchoring parts are arranged below the steel plate in a striding mode, the anchoring parts are connected into a whole through the connecting steel bars, and the area where the anchoring parts, the connecting steel bars and the steel plate are located is filled with the reinforced concrete pattern layer. On the basis that an existing reinforcing steel plate does not need to be dismantled, the flexural capacity and rigidity of the concrete beam are improved, construction steps are reduced, the construction efficiency is improved, meanwhile, the adopted geopolymer concrete is low in carbon emission and high in fireproof performance, and it can be guaranteed that the construction process is environmentally friendly and resistant to high temperature in the construction process.

The embodiment of the invention relates to the technical field of microphones, and discloses a vibrating diaphragm and an MEMS microphone. The vibrating diaphragm comprises a vibrating part and a connecting part arranged around the vibrating part. The vibration part comprises a first flat part located at the middle position, a corrugated part arranged around the first flat part and a second flat part arranged around the corrugated part. The corrugated portion extends in a direction from a center to an edge of the first flat portion. The flexural rigidity of the corrugated part is greater than that of the first flat part and that of the second flat part, and the corrugated part is made of a material at least comprising silicon nitride. According to the vibrating diaphragm and the MEMS microphone provided by the embodiment of the invention, the structural strength of the vibrating diaphragm can be improved.

The invention relates to a vehicle body rear structure and a vehicle, and the vehicle body rear structure comprises a top cover rear cross beam, a left side wall framework, a right side wall framework, a clothes tree and a rear floor upper cross beam, the hat and coat stand comprises a hat and coat stand main body, a hat and coat stand front cross beam connected to the front side of the hat and coat stand main body and a hat and coat stand rear cross beam connected to the rear side of the hat and coat stand main body, and the top cover rear cross beam is located in front of the hat and coat stand rear cross beam; the hat and coat stand is located between the top cover rear cross beam and the rear floor upper cross beam in the height direction of the vehicle. According to the vehicle body rear structure, all the annular force transmission frames are connected with one another, the vehicle body rear structure with the continuous transmission paths of the annular force transmission frames is formed, and the bending and torsional rigidity and modality of the whole vehicle are greatly improved.

This invention discloses a novel prefabricated station structure based on a friction pendulum with separate central columns, comprising a top slab, a bottom slab, and side walls. A middle slab is positioned between the top and bottom slabs, and multiple upper central columns are positioned between the top and middle slabs. Multiple lower central columns are positioned between the middle and bottom slabs, with corresponding upper and lower central columns arranged symmetrically in a mirror image. Both upper and lower central columns are separate central columns, each consisting of a first separate column and a second separate column. The upper ends of the first and second separate columns are connected and fixed via an upper arc-shaped connecting part, and their lower ends are connected via a lower arc-shaped connecting part. Swing supports are installed at the arc-shaped grooves of the bottom and top slabs. This station structure balances structural stiffness, structural stability, and seismic isolation performance.

The application discloses a composite steel pipe single pile filled with recycled building materials and a construction method thereof, and belongs to the technical field of steel pipe piles. The composite steel pipe single pile comprises a steel pipe pile body, a cavity is arranged in the steel pipe pile body, the cavity is used for filling recycled building materials, a plurality of interface connecting mechanisms are arranged in the cavity, and a sealing mechanism is arranged on the top surface of the steel pipe pile body. By constructing a steel-filling core composite cross-section structure, the cross-section inertia moment and the overall bending stiffness are improved, the pile top displacement and bending deformation can be effectively reduced under the action of horizontal load, the single pile horizontal bearing capacity is improved by optimizing the cross-section stress system under the condition of controlling the steel consumption, and the structural material utilization efficiency is improved. The collaborative working capacity between the steel pipe and the filling body is enhanced through the interface connecting structure, the overall stress performance of the composite structure is improved, the air retention space in the steel pipe is reduced by filling the recycled building materials, the temperature and humidity fluctuations are alleviated, and the internal service environment is improved.

The utility model relates to the technical field of electro-tricycles, in particular to a stainless steel tube frame for an electro-tricycle, which comprises an upper frame, a lower frame, a head, a lower left side beam and a lower right side beam which are integrally formed, a U-shaped head tube is formed at the front end of the lower left side beam and the front end of the lower right side beam, and a head beam is fixedly connected between the U-shaped head tube and an upper front beam. The head beam and the U-shaped head pipe form a headstock; the lower left side beam and the lower right side beam of the lower frame are integrally formed and extend to form the U-shaped head tube, then the U-shaped head tube is fixedly connected with the upper front cross beam of the upper frame through the head beam, a composite supporting structure of a vehicle head is formed, side body and human body loads are dispersed to all parts from a traditional single welding point, local stress concentration is reduced, and the stability of the vehicle head is improved. The problem of damage caused by breakage of a traditional structural cross beam is avoided; the geometric connection of the head beam and the U-shaped head tube can improve the overall bending resistance and torsional rigidity of the tricycle frame, and the service life of the tricycle can be effectively prolonged.

This utility model relates to the field of cable tray technology, specifically to a lightweight cable tray support using a molding process. It includes a base box with a top cover slidably mounted on one side and several mounting brackets symmetrically mounted on both sides. A limiting component is installed inside the base box to accommodate cable trays of different sizes. A drive component is installed on one side of the base box to drive the limiting component. Compared to existing technologies, this application uses a molding process for one-piece molding, resulting in a lighter and stronger structure. Combined with the adjustable limiting component and drive mechanism, it can adapt to the installation requirements of cable trays of different sizes, achieving efficient and stable limiting and clamping, improving installation flexibility, structural stability, and construction efficiency, reducing overall costs, and possessing greater versatility and practicality.

The invention relates to the technical field of automobile frames, in particular to an all-aluminum lightweight and integrated frame structure. The front anti-collision beam assembly is arranged at the front end, the front cross beam assembly is connected with the front anti-collision beam assembly, the right longitudinal beam assembly and the left longitudinal beam assembly are arranged on the two sides of the front cross beam assembly respectively, and the two sides of the middle floor cross beam assembly are connected with the right longitudinal beam assembly and the left longitudinal beam assembly respectively. The rear cross beam assembly is connected with the middle floor cross beam assembly; and the functional connecting part assemblies are respectively arranged at different parts. The novel steel frame has the beneficial effects that the novel steel frame is manufactured and combined by adopting a novel process and materials, the weight of the novel steel frame can be reduced by 30% compared with that of a traditional steel frame, and the sustainable development of light weight of a new energy logistics vehicle is further promoted.

A thrombus removal apparatus, comprising a body portion (1) and a distal portion (2). Both the body portion (1) and the distal portion (2) are self-expanding components, and the body portion (1) comprises a plurality of modules (13); each module (13) comprises a plurality of quadrilateral structures (14) formed by struts (16) in a circumferential direction, and two quadrilateral structures (14) adjacent to each other in the circumferential direction are connected at a quadrilateral structure connection node (15); proximal vertices (18) of each quadrilateral structure (14) of a proximal module (17) are connected to a proximal end (11) of the body portion (1) by means of respective connection struts (19), and proximal vertices (18) of each quadrilateral structure (14) of the remaining modules (13) are connected to, by means of the respective struts (16), one of distal vertices (20) of the adjacent modules (13) that are closer to the proximal end of the body portion (1), so that the adjacent modules (13) are connected by means of one or two connection nodes (3). By means of the connection mode of the thrombus removal apparatus, the apparatus can be delivered to a distal artery, and a large space is formed between the adjacent modules (13), thereby improving the thrombus capture and removal efficiency.

The utility model relates to the technical field of aluminium veneer provides a kind of aluminium veneer of firm installation, including aluminium veneer body, the outer wall of aluminium veneer body one side is uniformly fixed with longitudinal reinforcing rib, adjacent the longitudinal reinforcing rib between uniformly fixed with reinforcing structure, the reinforcing structure includes transverse reinforcing rib, limit stop and fixed bolt, the transverse reinforcing rib is uniformly set in aluminium veneer body near the side of longitudinal reinforcing rib.The utility model is provided with reinforcing structure, transverse reinforcing rib and longitudinal reinforcing rib form grid structure, can significantly improve the bending stiffness of aluminium veneer body when using, prevent wind pressure deformation, limit stop is locked with longitudinal reinforcing rib by fixed bolt, ensure reinforcing rib spacing uniform, avoid misplacement, guarantee the stability of connection, realized the device has the function of strengthening aluminium veneer body conveniently, improved the stability of this aluminium veneer of firm installation when using.

The utility model relates to a C column reinforcing structure and an automobile. The C column reinforcing structure comprises a C column reinforcing plate, a rear wheel bulge outer plate, a side wall doorsill reinforcing piece rear connecting plate, a rear floor edge beam front section and a rear wheel bulge outer plate connecting plate. And the lower end of the C column reinforcing plate is connected with the upper end of the side wall doorsill reinforcing piece rear connecting plate, the front section of the rear floor boundary beam, the rear wheel bulge outer plate and the rear wheel bulge outer plate connecting plate. The lower end of the C column reinforcing plate is connected with the upper end of the side wall doorsill reinforcing piece rear connecting plate, the rear floor boundary beam front section, the rear wheel bulge outer plate and the rear wheel bulge outer plate connecting plate to form a reinforcing structure, and the reinforcing structure has the advantages of being high in rigidity and strength, so that the C column reinforcing structure can improve the rigidity and the strength of the connecting position of the lower end of the automobile C column. Force transmitted to the C column of the automobile by a roof and the like can be transmitted to a lower automobile body through the rear connecting plate of the side wall doorsill reinforcer and the front section of the rear floor edge beam, so that the torsional rigidity and the bending rigidity of the C column of the automobile are improved.

The invention belongs to the technical field of helicopter automatic inclinator variable pitch pull rod structure design, and particularly relates to an integrated variable pitch pull rod and a forming method thereof. The variable-pitch pull rod comprises two composite material joints (1), a composite material pull rod body (2) and four shoulder bushings (3), wherein inward bosses are formed at the joints of the large inner diameter sections and the small inner diameter ends of the composite material joints (1); the outer circle of the composite material connector (1) is in an inverted cone shape. The outer diameter of the end part of the composite material pull rod body inner pipe (2.1) is smaller than that of the middle section; the inner circles at the two ends of the composite material pull rod body outer pipe (2.2) are inverted cone-shaped; an annular positioning boss is arranged on the end face of the shoulder bush (3), and a linear positioning boss is arranged in the axial direction of the shoulder bush (3). The four convex shoulder bushings (3) are respectively pre-buried in lug holes of the double insertion lugs of the composite material joint (1); the two composite material joints (1) are respectively formed at two ends of the composite material pull rod body (2).

The utility model discloses a kind of narrow flange H-shaped steel beam lower flange distortion buckling structures. The structure is composed of H-shaped steel beam, reinforced concrete floor, T-shaped transverse stiffening rib, H-shaped embedding fixture and stud. By symmetrically setting T-shaped transverse stiffening rib on both sides of H-shaped steel beam web, it forms H-shaped combined cross-section transverse stiffening rib, improves the bending stiffness and strength of transverse stiffening rib, and at the same time, extends H-shaped transverse stiffening rib upward and embeds it in reinforced concrete floor, improves the restraint capacity outside H-shaped steel beam surface, thereby effectively solves the problem of narrow flange H-shaped steel beam lower flange distortion buckling. It improves the stability of steel beam lower flange, saves cost, has good economic benefit and beneficial effect.

The invention provides an optimized cofferdam steel pipe pile and ring beam stress treatment method which comprises the following steps: marking a semicircular side wall, facing one side of a ring beam, of a steel pipe pile as a side A, and marking two quarter circular side walls divided from the side A of the steel pipe pile through a position in contact with the ring beam as sides AA, a stress optimization component is arranged between each side of the two AA sides and the ring beam, the outer side of each stress optimization component is arranged to be of a right-angle face structure, the inner side of each stress optimization component is arranged to be of an arc face structure, the two ends of the arc face are fixedly connected with the two corresponding ends of the right-angle face, the arc face is fixedly connected to the AA sides, and the side, facing the ring beam, of the right-angle face abuts against the ring beam. The method has the beneficial effects that linear contact stress between the steel pipe pile and the ring beam can be converted into uniform surface stress, the situation that stress concentration is generated at the contact position between the steel pipe pile and the ring beam is avoided, uniform stress between the steel pipe pile and the ring beam is guaranteed, the bending rigidity of the steel pipe pile at the ring beam is improved, and the service life of the steel pipe pile is prolonged. And the safety of the steel pipe pile is improved.

The present invention discloses a fully prefabricated assembled floor slab, wherein the floor slab is formed by splicing two or more prefabricated floor slabs, wherein the joint of the two prefabricated floor slabs is a tooth-groove structure, and the two prefabricated floor slabs are meshed with each other through the tooth-groove; and more than two connecting fixtures are arranged between the two prefabricated floor slabs. The above-mentioned fully prefabricated assembled floor slab is adopted, wherein the two prefabricated floor slabs are spliced ​​through the tooth-groove structure and connected by a plurality of connecting fixtures, which greatly increases the in-plane shear stiffness and bearing capacity of the floor slab. The fixed connecting fixtures can improve the in-plane bending bearing capacity of the fully assembled floor slab, and ensure the coordination of the out-of-plane deformation of the floor slab, so as to avoid cracking of the floor slab joints to affect the aesthetics of use, and the structure is simple and the on-site construction is relatively convenient.

The utility model relates to the field of cast-in-place pile construction technology discloses a reinforcing cage lifting point reinforcing structure and reinforcing cage. The reinforcing cage lifting point reinforcing structure is arranged on the reinforcing cage body, the reinforcing cage body includes longitudinal main reinforcement, reinforcing hoop and hoop reinforcement, the lifting point reinforcing node includes first reinforcing steel and second reinforcing steel, the first reinforcing steel is along the axial arrangement and is welded fixed with longitudinal main reinforcement and reinforcing hoop, the second reinforcing steel is across arranged on both sides of reinforcing hoop along the axial and is welded fixed with first reinforcing steel and reinforcing hoop respectively, the lifting point reinforcing support is arranged in the inside of reinforcing hoop and includes reinforcing steel. The reinforcing cage includes a plurality of segments, the segment upper end is provided with reinforcing cage lifting point reinforcing structure. The application through the synergies of lifting point reinforcing node and lifting point reinforcing support, the structural strength and rigidity of reinforcing cage lifting point are improved significantly, effectively prevent reinforcing cage from separating, deforming in the hoisting process, be applicable to the hoisting construction of all kinds of reinforcing cage.

A yeast cell microinjection method and system based on quartz nanoinjection needle belong to the field of microbial single cell operation and microinjection technology. It includes: preparing high rigidity quartz nanoinjection needle and holding needle; biochemical weakening pretreatment is carried out on yeast cells to weaken the cell wall; a microdroplet environment is constructed in a culture dish; single cells are fixed by negative pressure suction in the microdroplet, the quartz nanoinjection needle loaded with injection material penetrates the weakened cell wall in the axial direction, and the material is delivered by positive pressure; the needle is withdrawn and the cell is released. The microinjection method is realized by the yeast cell microinjection system. The high bending stiffness quartz nanoinjection needle is combined with the cell wall weakening treatment, and the stable, low damage puncture of the small size and high rigidity yeast cell is realized; at the same time, the stable osmotic pressure and operation culture space are provided by the microdroplet environment, which is suitable for gene operation and accurate delivery of material at single yeast cell level.