56results about How to "Easy to meet design requirements" patented technology

The invention discloses a forming method of a resin matrix composite with double layers of foam sandwich structures, the entire forming preparation of the resin matrix composite with double layers of foam sandwich structures is realized by adopting a liquid forming method, the forming method comprises the following steps: on a mold which can heat, employing a step-by-step dipping technology, dipping a lower-layer pre-formed body in a pre-formed body of the double layers of sandwich structures in a Z direction by using a resin film infusion method, and then guiding fluid resin by using a vacuum infusion molding process to dip upper-layer pre-formed body and a middle layer pre-formed body in the pre-formed body of the double layers of sandwich structures; after dipping, carrying out co-curing forming on the upper, middle and lower layers of pre-formed bodies and two foam sandwiches clamped between the upper, middle and lower layers of pre-formed bodies, so as to obtain the resin matrix composite with double layers of foam sandwich structures, wherein the upper, middle and lower layers of pre-formed bodies and the two foam sandwiches are thoroughly dipped by resin. The forming method has the advantages of simplicity in operation, environment protection, low cost, high functionality and the like, and is especially suitable for the forming preparation of a large-size composite material component.

The invention discloses a low-specific-speed impeller structure and a machining method thereof. The structure comprises an impeller body part and an impeller root part; the impeller body part includes a front cover plate, a blade body part and a back cover plate; the impeller root part includes a hub, a blade root part and a sealing ring part; the middle part of the back cover plate is downwards projected to form a sleeve; the back cover plate coats the back part of the hub through the sleeve; the front cover plate coats the sealing ring part; an annular welding line is formed between the front cover plate and the sealing ring part; and the front cover plate and the sealing ring part are tightly welded through the annular welding line. The machining method comprises the following steps: 1) the impeller body part and the impeller root part are respectively cast; 2) the impeller body part coats the impeller root part from the back end of the impeller root part; and the front cover plate coats the sealing ring part; and 3) the annular welding line between the front cover plate and the sealing ring part is tightly welded. The structure is low in machining difficulty, high in machining precision and better in total quality, improves the machining yield, is high in impeller stability, and can effectively improve the guide efficiency.

The invention discloses a silicon heterojunction cell and a manufacturing method thereof, relates to the technical field of solar cells, and aims to reduce a Schottky barrier between a P-type doped silicon layer and a transparent conductive layer and reduce the width of a depletion layer of the P-type doped silicon layer so as to improve the hole collection capability and improve the cell performance. The silicon heterojunction cell comprises a silicon substrate, an interface inversion layer and a first transparent conductive layer. The silicon substrate includes a doped silicon substrate, a P-type doped silicon layer, and a first intrinsic silicon layer formed between the doped silicon substrate and the P-type doped silicon layer. The interface inversion layer is formed on the P-type doped silicon layer. The first transparent conductive layer is formed on the interface inversion layer. The interface inversion layer contains polar organic molecules. The polar organic molecules are bonded with silicon atoms in the P-type doped silicon layer. The interface inversion layer has a dipole moment pointing from the transparent conductive layer to the P-type doped silicon layer. The manufacturing method of the silicon heterojunction battery is used for manufacturing the silicon heterojunction battery. The silicon heterojunction battery provided by the invention is used for photovoltaicpower generation.

The invention discloses a modular assembling method for a prefabricated spherical fragment of an ammunition warhead. The method comprises the following steps that modularization of the prefabricated spherical fragment is conducted, specifically, according to the technical requirements for the size, quantity, dimension, quality and center of mass of the fragment, the structural requirements of an inner cavity of a warhead are met, the shape and dimension of the fragment are designed, and the fragment is vertically and horizontally divided into a plurality of small pieces, a mold is designed according to the shape and dimension of each piece; according to the design weight of each piece of fragment, the pieces of fragments are weighed and put into the mold by adopting a regular arrangement method or a vibration method as the putting method; and after the pieces of fragments are put into the mold, an adhesive is poured into the mold, gaps among the fragments are filled with the adhesive,and a module with a required shape is formed after curing, so that the fragments and the mold are modularized into a whole. Compared with the prior art, module dividing can be performed according to the shape of an inner cavity of the warhead, the fragment modules with the needed shapes are obtained through the mold, the fragment modules are bonded to the corresponding positions of the inner cavity of the warhead, and the assembling requirements of fragments of various warheads are met.

The invention discloses an automobile combined rear lamp structure, which comprises a lamp housing, a brake lamp / rear position lamp, a rear steering signal lamp and a rear fog lamp / backup lamp, wherein the brake lamp / rear position lamp, the rear steering signal lamp and the rear fog lamp / backup lamp are arranged on the lamp housing. The invention is characterized in that a welded limiting rib is arranged on the right side of a lens, the welded limiting rib protrudes upward, the vertical section of the welded limiting rib is approximately trapezoidal, and the welded limiting rib is fixedly connected with a small limiting boss arranged on the right side of the lamp housing; a primary positioning pin is arranged at the upper part on the right side behind the lamp housing and a secondary positioning pin is arranged at the lower part on the right side behind the lamp housing; a primary positioning hole and a second positioning hole are arranged on a rail lamp reinforcement, and the primarypositioning pin and the secondary positioning pin arranged behind the lamp housing are respectively matched with the primary positioning hole and the secondary positioning hole. The invention has theadvantages that the welding is firm, water is not apt to enter and the service life is long; and the positioning is accurate and the installation is stable.

The invention discloses a pedal feel simulator for a vehicle and a vehicle having the same. The vehicle includes a pedal, the pedal feel simulator includes a casing, a linear motor, a first elastic member and a second elastic member, and the linear motor includes a motor primary, The motor secondary and the motor push rod, the motor secondary cooperates with the motor primary so that the motor secondary can move axially relative to the motor primary, the motor secondary drives the motor push rod to move synchronously, and the first end of the motor push rod protrudes out of the casing to fit It is connected with the pedal; the two ends of the first elastic part are matched with the inner wall of the shell and the second end of the motor push rod respectively; the second elastic part and the first elastic part are located on both sides of the primary axial direction of the motor, and the The two ends are fitted on the motor push rod and the motor primary respectively. According to the pedal feeling simulator for vehicles of the present invention, the response speed is fast, the braking effect is good, and at the same time, the driver can be provided with good "braking feeling", especially pedal braking feeling.

The invention provides a four-electrical port brushless double-fed motor with a reluctance rotor and double stators. The motor comprises two stators and the reluctance rotor which are an outer stator (1), an inner stator (5) and the reluctance rotor (3) and concentrically arranged from outside to inside; an inner air gap (2) is arranged between the inner stator (5) and the rotor (3); an outer air gap (4) is arranged between the outer stator (1) and the rotor (3); the outer stator (1) comprises an outer stator yoke (6), outer stator teeth (7), an outer power winding (8) and an outer control winding (9); the inner stator (5) comprises an inner stator yoke (10), inner stator teeth (11), an inner power winding (12) and an inner control winding (13); the outer control winding (9) of the outer stator (1) and the inner power winding (12) of the inner stator (5) form a work group; the outer power winding (8) of the outer stator (1) and the inner control winding (13) of the inner stator (5) form another work group; and the rotor (3) comprises magnetic conductive blocks (14) and non-magnetic conductive blocks (15) which are uniformly distributed along the circumference.

The invention relates to the technical field of control over fluids with high pressure differences, in particular to a labyrinth type regulating valve pressure reducing device. The labyrinth type regulating valve pressure reducing device comprises a valve seat, a valve core and a sleeve, wherein the valve core is positioned inside the valve seat; and a plurality of grooves are formed on the ring surface of a valve core body in the axial direction and are provided with at least one bent part. In the labyrinth type regulating valve pressure reducing device provided by the invention, a ring surface axial groove is formed on the surface of the valve core body for throttling, so that the flow can be accurately regulated, and the effects of resisting washing and steam corrosion and reducing noise can be achieved; and by the device, the processing is convenient, design requirements are easy to meet and the cost can be saved.

The invention discloses a frame beam-column joint reinforcement structure and a construction method thereof, wherein a frame beam-column joint reinforcement structure includes an original frame column, a frame beam, a steel sleeve and a reinforcement cage, and the reinforcement cage includes inserting bars, The ring reinforcement of the inner ring beam and the ring reinforcement of the outer ring beam, the frame beam is connected to the original frame column, the ring reinforcement of the inner ring beam and the ring reinforcement of the outer ring beam respectively pass through the frame beam and surround the outside of the original frame beam-column joint, The ring reinforcement of the ring beam of the outer ring is located outside the ring reinforcement of the ring beam of the inner ring, and the inserting reinforcement is arranged vertically and connected with the ring reinforcement of the ring beam of the inner ring. The layers of reinforced concrete between the frame columns and to bury the reinforcement cage. The reinforcement method of the present invention utilizes the constraint effect of the inner ring beam ring reinforcement and the outer ring beam ring reinforcement on the core area of ​​the frame beam-column joint, which greatly improves the shear bearing capacity and stiffness of the frame beam-column joint, thereby improving The seismic performance of the frame beam-column joints.

The invention provides a mounting device for a unit window with a stand column module. The mounting device comprises a mobile robot, a sucker frame, glass suckers and a unit window fixing device, wherein the mobile robot comprises a lifting system; the sucker frame comprises a first plane, a second plane and a third plane, the first plane, the second plane and the third plane are connected to forma C shape, the first plane is connected with the lifting system, and the second plane is far away from the lifting system; the glass suckers are fixed on the second plane, and the glass suckers are used for sucking the glass of the unit window; and the unit window fixing device is arranged on a main body structure of the to-be-installed unit window. Indoor installation of the robot is not affected by weather at all, and the construction period can be effectively shortened; the robot is installed indoors, and the situation that construction is stopped when it is dark does not exist; and the robot installation control precision is easy to control, the installation precision is higher than manual installation precision, and the design requirement is easier to meet.

The invention relates to a reinforced concrete internal model, in particular to a freely combined diamond die with a fixed bracket, which comprises a fixed bracket and a plurality of small diamond dies, wherein adaptive sliding rails are respectively arranged on the fixed bracket and the small diamond dies, and the small diamond dies form the combined diamond die through arranging the sliding rails on the bracket. The fixed bracket comprises a cylinder shaft and four high-strength blades, wherein the blades are mutually vertically and uniformly fixed on the side wall of the cylinder shaft, and sliding rails adapted to the side walls of the square diamond dies are respectively arranged on the side surfaces of the blades along a clockwise direction or anticlockwise direction. The invention is convenient for positioning and easy for construction, is favorable for conveniently solving the contradiction of medium-small embedded parts and the installation of the box body, and is easy to ensure that the concrete is compact.

The invention discloses a pedal-feeling simulator for a vehicle and the vehicle with the pedal-feeling simulator. The vehicle comprises a pedal, and the pedal-feeling simulator comprises a shell, a linear motor, a first elastic part and a second electric part; and the linear motor comprises a motor primary part, a motor secondary part and a motor push rod, the motor secondary part is matched withthe motor primary part so that the motor secondary part can axially move relative to the motor primary part, the motor secondary part drives the motor push rod to move synchronously, the first end ofthe motor push rod extends out of the shell to be suitable for being connected with the pedal, the two ends of the first elastic part are matched with the inner wall of the shell and the second end ofthe motor push rod correspondingly, the second elastic part and the first elastic part are located on the two axial sides of the motor primary part, and the two ends of the second elastic part are matched with the motor pushing rod and the motor primary part. The pedal-feeling simulator for the vehicle is high in response speed, has the good braking effect, and meanwhile can provide the good 'braking feeling', especially a pedal braking feeling, for a driver.

The invention relates to a connecting structure of an all-composite winged ship, each component of the Wing-in-Ground effect ship is provided with the same connecting part, A PVC structural foam corematerial, A FRP surface plate is arrange on that upper and lower surface of the foam core material of the PVC structure, one end of the FRP surface plate is connected with the FRP connection plate, AFRP connection layer plate is provide with a notch in that middle of the joint with the FRP surface plate, A PVC structural foam core material extend into that notch, the FRP connection layer plate isformed into a solid plate structure at one end away from the FRP surface plate, the solid plate structure of the two members to be connected overlaps upwardly and downwardly, A plurality of double-row staggered through holes are arranged at the overlapping position, a metal sleeve liner is bonded with epoxy resin in the through holes, and bolts are installed in the metal sleeve liner. The invention adopts the boss structure respectively, and the split wing box connects the hull with the aft wing and the ground effect wing, the connection is firm, and the manufacturing, disassembly and assembly are convenient, and the utilization rate of the hull space is improved.

The invention discloses a large-slab girder stacking beam installation device, which solves the technical problem that the existing upper and lower stacking beams are not tightly connected, which easily leads to joint cracking of the upper and lower stacking beams. The upper stacking beam (1) is arranged on the lower stacking beam (2), two left connecting frames are fixedly arranged at the left end of the upper stacking beam (1), and two right connecting frames are fixedly arranged at the right end of the upper stacking beam (1) , the other end of the left front frame beam (5) is hinged with the other end of the right front frame beam (6) through the top connecting pin (9), and the upper end of the front boom (10) is connected to the front end of the top connecting pin (9) , the upper end of the rear boom (17) is connected to the rear end of the top connecting pin (9), and a horizontal support beam (11) is connected between the front boom (10) and the rear boom (17). A jack (18) is arranged on the beam (11), and the upper end of the jack (18) is connected to the lower bottom surface of the lower stacking beam (2). The invention ensures the overall quality of boiler installation.