815results about How to "Improve structural rigidity" patented technology

The invention relates to a scissor type unfolding mechanism which comprises a top short rod assembly, scissor type stage group rod piece units, a bottom supporting rod assembly, a driving unit assembly and an unfolding in-place indicating switch, the unfolding mechanism is connected with an unfolded object through the top short rod assembly, and the multiple stages of scissor type stage group rod piece units are connected through hinge shafts to form a multi-stage unfolding mechanism. The long rods of the multiple stages of unfolding mechanisms are connected in sequence; the bottom supporting rod assembly is connected with the driving unit assembly, the driving unit assembly drives the bottom supporting rod assembly to achieve unfolding and folding of the unfolding mechanism, after the unfolding mechanism is unfolded, a stable triangular structure is formed through the bottom supporting rod assembly, the scissor type stage group rod piece units and the limiting devices, the structural rigidity is improved, and the unfolding mechanism is controlled to be unfolded.

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a carbon-coated sodium ferric phosphate pyrophosphate positive electrode material and a preparation method and application thereof.The preparation method includes the steps that carbon nanotubes and an organic carbon source serve as carbon sources to prepare two kinds of sodium ferric phosphate pyrophosphate particles, and the two kinds of particles are mixed in proportion and then sintered to obtain the carbon-coated sodium ferric phosphate pyrophosphate positive electrode material. In the carbon layer coated on the surface of the material, the carbon nanotubes and the organic carbon source exert respective conductive advantages to form a strong conductive network, so that the conductivity of the material is improved, and the overall structural rigidity of the material is enhanced.

The invention discloses a composite material storage box forming mold and a manufacturing method thereof, and belongs to the technical field of composite material forming molds. An end socket connecting block, an end socket cylinder section connecting ring, a split type cylinder body assembly, a cap-shaped reinforcing rib and the like are manufactured in parallel and assembled to obtain the composite material storage box forming mold. The self-weight of the mold is greatly reduced while the outer molded surface of the combined mold is guaranteed, the mold filling and demolding processes are simplified, the end socket is left in the product after the product is formed, the strength and rigidity of the storage box are improved, and a stable connecting port can be provided.

The invention relates to a photoinitiator, a photopolymerization composition and application thereof, and relates to the technical field of photoinitiators, the photoinitiator is a compound with a structure as shown in a formula (1): # imgabs 0 #: 1-2 structures in R1-R8 in the formula (1) are selected from groups as shown in a formula (2) or a formula (3): # imgabs 1 #. The compound provided by the invention still has relatively strong absorption capacity in a dark color system, has high OD (optical density), and can be used for preparing a photoinitiator. The photoinitiator has excellent I-line photosensitivity, and is more matched with the emission spectrum of an ultraviolet light source, so that the photoinitiator is high in photosensitivity, good in solubility, lower in cost and excellent in comprehensive performance, and has excellent application prospects in display, semiconductors and printing ink.

The invention discloses an offshore single-pile structure foundation and a construction method thereof, the offshore single-pile structure foundation is composed of a main pile, a suction barrel assembly and a grouting sealing cover, the outer part of the main pile is annularly sleeved with the suction barrel assembly, and the top of the suction barrel assembly is provided with the grouting sealing cover. The structural form that the variable-diameter single pile and the multi-subdivision annular suction barrel are combined is adopted, the advantages of extremely high vertical bearing of the single pile and horizontal reinforcing supporting of the suction barrel are fully played, the horizontal swing load resisting capacity of the single pile on the mud surface section is effectively improved, and the horizontal swing load resisting capacity of the single pile on the mud surface section is effectively improved through horizontal reinforcing of the external suction barrel structure. Meanwhile, the structural rigidity is improved, the stability is improved, and long-term use is stable and reliable; the independent center supporting sleeve is arranged in the middle of the suction barrel assembly, so that when a single pile is scoured, the inner ring of the suction barrel can avoid a scouring pit, self-sinking sealing is achieved without being affected, the suction barrel can smoothly sink to the designed depth, and the bearing requirement is met.

The invention provides a machining method for a three-petal type stator machining assembly with two-stage blades of an aero-engine. The machining method can solve the problems that the two-stage blades in a three-petal type stator are difficult to machine, parts are large in deformation after spraying and combined machining, and the shape and position sizes such as the blade profile tolerance, the flow channel profile tolerance and the concentricity of assembly parts at the front end and the rear end of the stator are out of tolerance. The method comprises the following steps of blank inspection, rough turning of an inner shape and an outer shape, rough milling of an outer shape, milling, finish milling, clamp trimming, finish trimming, finish turning, finish milling, finish turning, inspection, spraying, turning of a large-end coating, turning of a small-end coating, grinding of a blade tip, clamp trimming of a mark, fluorescent penetrant inspection and final inspection. The method is characterized in that: The working procedures between the outer shape rough milling step and the inspection step specifically comprise segmentation, stress relief heat treatment, joint surface and hole milling, grinding, combination, benchmark trimming, two end and inner shape fine turning, outer shape finish milling, splitting, blade shape finish milling, clamp trimming, combination, large end benchmark fine trimming, small end finish turning, small end lace and hole finish milling and large end finish turning. .

The invention provides wafer coating equipment and a wafer coating process, and the wafer coating equipment comprises a rack, a driving assembly, a stop lever, a rotating seat and a wafer clamp, a limiting block is arranged on the rack, and a first limiting groove and a second limiting groove are formed in the limiting block; the driving assembly comprises a driving device and a transmission shaft; the gear rod is connected to the transmission shaft in a penetrating mode, a first limiting protruding block and a second limiting protruding block are arranged at the two ends of the gear rod respectively, the first limiting protruding block is provided with a first limiting face used for abutting against the first limiting groove, the second limiting protruding block is provided with a second limiting face, and the second limiting face is used for abutting against the second limiting groove after the transmission shaft rotates by 180 degrees. The second limiting surface and the first limiting surface are coplanar, and the axis of the transmission shaft is located in the second limiting surface; the rotating seat is respectively connected with the transmission shaft and the wafer clamp; the wafer clamp is used for placing a wafer. According to the wafer coating equipment, limiting is carried out through a mechanical structure, adjustment is convenient, the positioning precision is high, the structural rigidity is high, and the reliability is improved.

The invention relates to the technical field of engineering machinery clamping, in particular to an automatic centering clamping mechanism and a centering method.The automatic centering clamping mechanism comprises a clamping power part used for providing rotating power for clamping action; the screw rod and the power end of the clamping power part are synchronously and rotationally mounted; the clamping assembly is installed on the screw and comprises two nut assemblies, the two nut assemblies drive the clamping jaws to horizontally move face to face or back to back along the screw, when the clamping jaws move face to face, the clamping jaws of one nut assembly automatically stop moving towards the workpiece after making contact with the workpiece, and when the clamping jaws of the other nut assembly do not make contact with the workpiece, the clamping jaws of the other nut assembly do not make contact with the workpiece. The clamping mechanism is used for solving the technical problems that in the prior art, a clamping mechanism generally cannot achieve automatic centering clamping, the clamping efficiency is low due to the fact that clamping force is not uniform, and the clamping mechanism is prone to falling off after clamping.

The invention discloses a multi-cell energy-absorbing thin-walled tube based on a paper folding structure, which belongs to the technical field of structural mechanics and comprises a thin-walled inner tube, a thin-walled outer tube and a plurality of rib plates. Each layer of unit cell structure is defined by n unit wall plates in an end-to-end connection mode, each unit wall plate comprises an upper trapezoidal unit plate and a lower trapezoidal unit plate which are connected along a first crease, and the left side and the right side of each upper trapezoidal unit plate are connected with upper triangular unit plates along second creases correspondingly. The left side and the right side of the lower trapezoidal unit plate are respectively connected with the lower triangular unit plate along a third crease, and the upper triangular unit plate and the lower triangular unit plate are connected through a fourth crease. According to the multi-cell energy absorption thin-walled tube based on the paper folding structure, the thin-walled inner tube and the thin-walled outer tube which are of the paper folding structure are compounded through the rib plates, higher average crushing force is obtained through the compound design, and therefore the load stability of the structure is improved; the deformation process of the multi-cell energy-absorbing thin-walled tube is stable and controllable through specific crease lines and geometric shape design.

The extrusion-free stacking packaging carton belongs to the field of packaging cartons and comprises a carton body, two sets of partition plates are placed on the lower side of the inner surface of the carton body and distributed in parallel up and down, a supporting plate is arranged between the two sets of partition plates, and the supporting plate is in sliding connection with the inner surface of the carton body; a supporting assembly is arranged on the inner side of the box body and comprises a top plate slidably connected with the lower end of the inner surface of the box body, a guide groove is formed in the outer surface of the lower end of the box body, and a guide block is slidably connected to the inner surface of the guide groove. Through the arrangement of the supporting assembly, the box body on the upper side can be lifted and supported through the reinforcing plate, so that the pressure borne by the box body on the lower side can be reduced to a certain extent, the pressure resistance of the box body can be effectively improved, and the probability that the box body is deformed and damaged in the stacking process is reduced; and the integrity and the yield of the fruits in the box body can be ensured.

The invention discloses a preparation method of an aluminum alloy cast rod. The preparation method comprises the following steps: mixing and melting an intermediate alloy containing an aluminum element, an intermediate alloy containing a Mn element and an intermediate alloy containing a Fe element; an online refiner is added; carrying out refining treatment on the molten liquid, and carrying out slagging-off operation to remove impurities; an intermediate alloy containing the Ce element is added into the molten liquid obtained after refining and slagging-off, and the final adding amount of the Ce element in the aluminum alloy casting rod is 0.3-1 wt% by mass; and the melt added with the Ce element is filtered, the treated melt is cast, and the aluminum alloy cast rod is obtained. The strength, the tensile strength and the yield strength of the aluminum alloy modified through the method are all remarkably improved.

The invention discloses a driving arm type bidirectional rotating gate which comprises a rotating gate body, a hydraulic oil cylinder and a locking device, and the hydraulic oil cylinder and the locking device are both installed on gate piers on the two sides of the rotating gate body. The rotary gate comprises a gate body, a supporting arm and a driving arm, the supporting arm and the driving arm are arranged at the two ends of the gate body, the gate body and the supporting arm are connected or welded into a whole through high-strength bolts, one end of the driving arm is installed at the rotating center of the supporting arm, the driving arm and the supporting arm are hinged to a supporting hinge installed in a gate pier, and the other end of the driving arm is hinged to a gate pier. The middle of the driving arm is connected with the supporting arm through a pin shaft, the other end of the driving arm is connected with a hanging head of the hydraulic oil cylinder through a pin shaft, and the rotary gate is driven by the hydraulic oil cylinder to rotate around the supporting hinge. And a locking bolt of the locking device is inserted into a locking pin hole in the support arm to lock the rotary gate. The method is convenient to operate, high in efficiency and safe and reliable in operation process.

The vehicle body structure comprises a side wall inner plate assembly and a front vehicle body assembly, the side wall inner plate assembly comprises a front stand column and a hinge reinforcing plate assembly, and the hinge reinforcing plate assembly is fixed to the front stand column; the front vehicle body assembly is connected with the side wall inner plate assembly, the front vehicle body assembly comprises a front floor assembly and a front cabin arranged at the top end of the front floor assembly, the front floor assembly is provided with a doorsill reinforcing part, and the doorsill reinforcing part is located at the joint of the front floor assembly and the front cabin; wherein a cavity structure is formed between the front vehicle body assembly and the front stand column, the hinge reinforcing plate assembly and the threshold reinforcing piece are both located in the cavity structure, and the hinge reinforcing plate assembly is further fixed to the front floor assembly and the front cabin. According to the structure, the hinge reinforcing plate assembly located in the cavity structure is connected with the front stand column and further fixed to the front floor assembly and the front cabin, and when the automobile door and the hinge reinforcing plate bear large Y-direction impact, force can be transmitted to the front automobile body assembly and the side wall inner plate assembly through the hinge reinforcing plate.

The multi-point supporting efficient clamping device comprises a fixed base (1) and is characterized by further comprising a low inclined supporting device (2), a high inclined supporting device (3), a clamping device (4), an equal-height positioning device (5), a positioning adjusting device (6), a high straight supporting device (7), a middle straight supporting device (8) and a low straight supporting device (9). The positioning and adjusting device is designed, the equal-height blocks are arranged, the positioning reference is determined, the process chucks of the split type cabin can be located at the same height by adjusting the adjusting air cylinders, and automatic clamping and alignment are achieved. The multi-position multi-point supporting device is arranged, the structural rigidity of a weak-rigidity area is improved in a targeted mode, the clamping cost is reduced, and multi-point stable supporting on a complex curved surface is achieved.

The utility model provides a fan tower structure which comprises a supporting frame, a connecting base and a tower drum, the upper end of the supporting frame is connected with the lower end of the connecting base, and the upper end of the connecting base is connected with the lower end of the tower drum. The supporting frame comprises three steel stand columns arranged in a triangular mode, every two adjacent steel stand columns are connected through a plurality of transverse web members, the transverse web members are sequentially arranged in the length direction of the steel stand columns at intervals, and the transverse web members are connected through longitudinal web members. Two inclined web members are arranged between every two vertically adjacent transverse web members, the lower ends of the two inclined web members are correspondingly connected with the two ends of the transverse web member located on the lower portion respectively, and the upper ends of the two inclined web members are connected to the joints between the longitudinal web members and the transverse web members located on the upper portion. According to the fan tower structure, the problems that an existing fan tower is complex in structure, large in steel consumption and high in cost can be solved.

The unmanned aerial vehicle is characterized in that four buffer legs are elastically supported on the four side walls of a material bearing seat, two connecting rods are distributed in a cross shape, the two ends of each connecting rod are correspondingly hinged to the two buffer legs, each connecting rod is sleeved with a spring and two buffer sleeves, the spring is arranged between the two buffer sleeves, and the two buffer sleeves are connected with the material bearing seat. Every two of the four buffering arms form a group, the two buffering arms in each group are distributed in a V shape, one ends of the buffering arms are hinged to the material bearing base, and the other ends of the buffering arms are hinged to the two buffering sleeves on the same connecting rod. When the unmanned aerial vehicle lands on an uneven road surface, the buffer structure can absorb and weaken impact from the road surface. The springs can be compressed when the buffer legs meet the protrusions, impact energy is stored as elastic potential energy, and vibration is prevented from being directly transmitted to the machine body.

The levelness adjusting structure comprises an upper plate, a lower plate and a plurality of adjusting assemblies, wherein the upper plate and the lower plate are vertically arranged at intervals; the adjusting assemblies are connected between the upper plate and the lower plate; each adjusting assembly comprises a spring seat fixed to the side, close to the upper plate, of the lower plate, a screw rotationally arranged on the side, close to the lower plate, of the upper plate, a spring cover in threaded connection with the screw, and a spring with the two ends connected to the spring seat and the spring cover correspondingly. And the compression amount of the spring is correspondingly adjusted by changing the vertical relative positions of the screw rod and the spring cover. According to the utility model, the horizontal adjustment of the upper plate and the panel in the active vibration reduction platform can be realized. The levelness adjusting structure is simple in structure, small in structural contact and high in structural rigidity in the x / y / z directions, namely the structural linearity degree is good, and active control over vibration is greatly facilitated.

The present invention relates to the field of mechanical processing, and discloses a hybrid robot automated processing line, comprising: a hybrid robot body for processing workpieces and a conveying device for sending the workpiece to / from the hybrid robot body, the conveying device comprising a workpiece table for fixing the workpiece and a driving part for driving the workpiece table to move, a fixture for fixing the workpiece is arranged on the workpiece table, the hybrid robot body comprises a base, a moving platform and an action part for driving the moving platform to move, a swing head assembly for installing a processing tool is arranged on the moving platform, a visual sensor is arranged on the swing head assembly, and a calibration block corresponding to the visual sensor is fixedly arranged on the workpiece table. The hybrid robot automated processing line of the present invention has high processing precision, high automation degree, and high processing efficiency; it has a high processing freedom, and the angle of the workpiece during processing is easy to adjust, so it is easy to process complex workpieces.

The utility model discloses a table board sliding adjusting mechanism and a study table and chair, the table board sliding adjusting mechanism comprises a table board, and the bottom of the table board is provided with a sliding rail with a U-shaped cross section; the supporting plate is provided with a sliding block, and the sliding block is in sliding fit with the sliding rail; wherein the top of the sliding block is provided with a rib arranged along the sliding direction, and the bottom of the sliding block is provided with a rolling body. According to the table board sliding adjusting mechanism, the sliding rails and the sliding blocks are arranged to form a linear guiding structure, and stable guiding and supporting are provided for the table board; the rib design and the rolling body are matched to reduce frictional resistance, and adjustment is smoother; the structure is simple and easy to manufacture.

The present invention provides a rotor of a steam turbine, a steam turbine and a prime mover device, and relates to the technical field of steam turbines. The rotor of the steam turbine includes a rotating shaft and an impeller structure; the impeller structure includes a bottom plate, a plurality of impeller bodies sleeved and fixedly connected along the axial direction of the rotating shaft, and a rotor protective layer; the bottom plate cooperates with the rotor protective layer to form a sleeve with an open end, and the sleeve is fixedly connected with the plurality of impeller bodies to form a steam channel; a steam inlet is provided in the space between the bottom plate and the first impeller body close to the bottom plate; the impeller body includes a hub and a plurality of blades; the plurality of blades are arranged along the circumference of the hub; the cross-sectional area of ​​the steam channel at the connection position of each impeller body and the rotor protective layer gradually increases from one end close to the bottom plate to one end away from the bottom plate. The present invention solves the technical problems of insufficient structural rigidity and high blade maintenance cost existing in the prior art.

The utility model relates to the technical field of slope protection, in particular to a reinforced microphone pad ecological protection slope which comprises a sealing layer, a backfill soil layer, an anchor net layer, a planting soil layer and a reinforced microphone pad which are sequentially laid from inside to outside along the slope surface of a medium-weathered rock or strong-weathered rock slope, a plurality of grouting anchor rods are arranged along the slope in an array mode, and a plurality of anchor nails are arranged in an array mode. A plurality of drainage pipes are embedded in the side slope and penetrate through a sealing layer, a backfill soil layer, an anchor net layer, a planting soil layer and a reinforced microphone pad from the interior of a side slope soil body, the sealing layer comprises concrete and a reinforcing mesh, the reinforcing mesh is embedded in the concrete, the reinforcing mesh, the anchor net layer and the reinforced microphone pad are connected with grouting anchor rods respectively, and the reinforced microphone pad is connected with anchor nails. The slope is sealed and isolated, rainwater is prevented from entering the rock mass, and slope instability is avoided; water in the side slope is discharged by arranging the drainage pipe, and the backfill soil layer, the anchor net layer, the planting soil layer and the reinforced microphone pad are sequentially laid on the sealing layer, so that green plants can be planted on the side slope, and an ecological protection slope is formed.

The invention discloses a polyarylether sulfone polymer and a preparation method and application thereof. The preparation method of the polyarylether sulfone polymer comprises the following steps: carrying out condensation polymerization on a bisphenol compound and a dihalogen diphenyl sulfone derivative, boiling, washing and drying to obtain polyarylether sulfone resin. According to the polyarylether sulphone resin disclosed by the invention, by introducing benzoyl, the conjugation degree of a main chain of a polymer is increased, and the rigidity of the main chain is improved, so that the polyarylether sulphone resin has good thermal stability and dimensional stability; meanwhile, the hydrophilicity of the resin is improved due to the increase of carbonyl. The development and utilization prospects in the fields of sewage treatment, gas separation, solid electrolyte, battery diaphragms and the like are very wide. The invention aims to provide a novel high-temperature-resistant hydrophilic polyarylether sulfone resin and a preparation method thereof, i.e., a benzoyl group is introduced into a main chain structure of polyarylether sulfone, so that the structural rigidity of a polymer is improved, and the hydrophilicity is increased.

The invention relates to a semi-active pressure-resistant low-frequency sound absorption covering layer containing a piezoelectric composite material. The semi-active pressure-resistant low-frequency sound-absorbing covering layer containing the piezoelectric composite material structurally comprises a surface protecting layer which is arranged on the outermost side of the covering layer and converts sound energy into heat energy through a damping effect; the piezoelectric composite material layer is arranged on the inner side of the surface protection layer, converts sound energy into electric energy through a direct piezoelectric effect, and dissipates the electric energy through a shunt branch; the cavity layer is arranged on the inner side of the piezoelectric composite material layer and absorbs sound through a cavity resonance effect, waveform conversion and a damping effect; the substrate layer is arranged on the inner side of the cavity layer to seal the cavity layer so as to absorb sound with a damping effect; wherein the composite material layer is electrically connected with an external shunt branch, and the shunt branch is formed by connecting a negative capacitance element, a resistance element and an inductance element in series.

The invention provides a piston type shielding door, and particularly relates to the technical field of radiation shielding, the piston type shielding door comprises a door frame, and the door frame is mounted on a wall body. The upper portion of the side, facing the door frame, of the door body and the left side and the right side, close to the door frame, of the door body are concave inwards to form stepped structures, the moving direction of the door body is perpendicular to the wall, and the door frame is matched with the door body to form labyrinth seal. And the sliding device is fixedly mounted at the bottom of the door body. And the bearing device is mounted on the ground at the bottom of the door body, and the bearing device is interactively matched with the sliding device. And the driving device is fixedly installed on the side, away from the door frame, of the door body, and the driving device is used for driving the door body to move on the bearing device through the sliding device. According to the piston type shielding door, the technical problems that a shielding door is poor in shielding effect, high in construction requirement and serious in abrasion of internal parts are solved, and the piston type shielding door is complete in shielding, low in construction difficulty and long in service life.

The utility model relates to a high-strength boundary beam for a battery pack frame, which comprises a first section body, a second section body and a third section body, the second section body and the third section body are respectively arranged on two sides of the first section body, and both the second section body and the third section body are arranged perpendicular to the first section body. The second section body is bent towards the direction close to the third section body to form a fourth section body parallel to the first section body, the third section body is bent towards the direction close to the second section body to form a fifth section body parallel to the first section body, and the length of the section of the fourth section body is larger than that of the section of the fifth section body; a first reinforcing rib parallel to the second section body is bent on the fourth section body in the direction close to the first section body, a second reinforcing rib parallel to the first section body is bent on the first reinforcing rib in the direction close to the second section body, and a third reinforcing rib parallel to the second section body is bent on the second reinforcing rib in the direction close to the fourth section body. According to the technical scheme, the structural strength and rigidity of the battery pack frame edge beam are improved.

The invention provides a mobile air conditioner capable of changing the cold air outlet direction and provided with obliquely-installed coaxial cold and hot air ducts, which comprises a shell serving as a mounting carrier, an air inlet, an air outlet, an air outlet, an air inlet and an air outlet, the shell is hollow, and a mounting cavity is formed in the shell; the volute assembly is obliquely arranged in the mounting cavity, the volute assembly comprises an upper volute assembly and a lower volute assembly located below the upper volute assembly, an upper volute cavity and a lower volute cavity are formed in the upper volute assembly and the lower volute assembly respectively, the upper volute cavity and the lower volute cavity are coaxially arranged, and the axis of the upper volute cavity and the axis of the lower volute cavity incline to the horizontal plane; an exhaust channel is arranged on the side wall of the upper volute cavity, extends upwards, is in butt joint with a first air outlet in the top of the shell and is used for discharging air. The mobile air conditioner capable of changing the cold air outlet direction and provided with the obliquely-installed coaxial cold and hot air ducts is compact in structure, small in size, low in manufacturing cost and use cost, convenient to assemble, high in air outlet speed, long in air supply distance, low in working noise, good in use effect and long in service life.

The invention provides a shell-based mechanical metamaterial design strategy based on level set function weighted combination. The framework is inspired by a three-period minimal curved surface, and a shell-based mechanical metamaterial database is constructed by adopting a level set function weighted combination strategy. The effective elastic performance of the metamaterial is evaluated through the homogenization theory of voxel modeling. A back propagation neural network model is developed, and the model can realize reverse mapping between geometric parameters and material attributes of a shell base unit. In addition, the reliability of the homogenization theory is verified by adopting a quasi-static compression test, and the effective elastic characteristic and the compression response of the shell-based structure are evaluated. Research results show that the shell-based mechanical metamaterial not only shows isotropic elasticity and high rigidity exceeding the upper limit of the Hashin-Shtrikman theory, but also has significantly improved yield strength and energy absorption ability under compression. According to the design, a series of light-weight and high-rigidity-strength structures are finally formed, and 3D printing forming is conducted through the PolyJet technology.

The invention belongs to the technical field of wind power generation, and provides a concrete tower drum connecting device and a fan supporting structure.The concrete tower drum connecting device comprises a table body, the table body is provided with a through hole, the table body is provided with a plurality of steel strand via holes and a plurality of first bolting holes around the through hole, and steel strands penetrate through the steel strand via holes to be connected with a concrete tower drum; bolting pieces penetrate through the first bolting holes to be connected with the fan foundation. The steel strand can tightly press the concrete tower tube at the top of the concrete tower tube connecting device, the first bolting hole is formed by avoiding the steel strand through hole and is connected with the fan foundation through the bolting piece, the overall structural rigidity is improved, the concrete tower tube is firmly connected with the fan foundation, and the service life of the concrete tower tube is prolonged. The connection stability and reliability of the wind turbine foundation and the concrete tower drum are effectively guaranteed, and the development requirements of large-scale and high-altitude wind turbine generators can be met.

The utility model relates to a high-strength mounting beam for a battery pack frame, which comprises a first section body and a second section body which are vertically arranged, the first section body is bent towards the direction close to the second section body to form a third section body, and the third section body and the second section body are positioned on the same side of the first section body. A reinforcing rib I parallel to the second section body is bent on the third section body towards the direction close to the first section body; the end, away from the first section body, of the second section body is perpendicularly bent to form a fourth section body, the fourth section body and the first section body are located on the same side of the second section body, and the fourth section body is bent in the direction close to the first section body to form a fifth section body parallel to the second section body. And a reinforcing rib II parallel to the first section body is bent on the fifth section body towards the direction close to the second section body. The mounting beam has the effect of improving the structural strength and rigidity of the mounting beam.

The invention belongs to the technical field of vehicles, and discloses a rear seat fixing point enhanced structure and a vehicle, the rear seat fixing point enhanced structure comprises a rear seat front cross beam assembly, a rear floor middle cross beam and a rear seat lower cross beam assembly which are arranged in parallel, and the rear seat front cross beam assembly and the rear floor middle cross beam are connected with each other through a middle seat mounting bracket; the rear floor middle cross beam and the rear row seat lower cross beam assembly are connected with each other through the rear floor longitudinal beam welding assembly, the middle row seat mounting bracket and the rear seat front cross beam assembly are arranged perpendicular to each other, and the rear floor longitudinal beam welding assembly and the rear seat front cross beam assembly are arranged perpendicular to each other. Mounting points of the rear row seats are firmer, the cross beams and the longitudinal beams which are connected with each other enhance the overall strength and rigidity of a vehicle body, the buffering and energy dispersing capacity of the vehicle in the front face, the side face and rear-end collision of the vehicle is greatly enhanced, and the safety of the whole vehicle is improved.