45 results about "Lateral expansion" patented technology

An energy return device for a midsole of a shoe comprises a resilient foam or matrix structure, such as a domed disk, around a cavity. The resilient structure is arranged to collapse into the cavity under foot strike pressure. The structure may initially resist the pressure primarily by compression forces directed around the cavity. As the cavity collapses these forces may provide decreasing vertical spring rate as the structure bends or as the forces become less vertical, causing the structure to stay more compressed through the midstride and energy return to be delayed until the user has moved further forward in their stance. At full collapse the material of the structure may resist further downward force of the user by direct compression. A lateral expansion limiter may resist lateral expansion to increase vertical force supplied by the compression forces around the cavity and reduce interference with other components. A support structure may help guide the collapse and increase spring force.

The invention discloses a UHPC-foam concrete composite material with a sandwich structure and a preparation method of the UHPC-foam concrete composite material. The composite material comprises two ultra-high performance concrete (UHPC) panel layers, a foam concrete sandwich layer of a negative Poisson's ratio three-dimensional framework prepared through a photocuring three-dimensional printing technology is arranged between the two ultra-high performance concrete (UHPC) panel layers, and the three-dimensional framework is of an inward-concave honeycomb topological structure and has the characteristic of transverse expansion after being pressed; impact stress can be effectively dispersed, and a dual energy dissipation path is formed through a synergistic effect with a porous energy absorption mechanism of the foam concrete. The panel layer and the sandwich layer are combined through a layered pouring process, and an interface is subjected to scabbling treatment so as to enhance the bonding strength. The composite material is superior to a traditional material in the aspects of compressive strength and energy absorption performance, is suitable for the fields of anti-explosion buildings, military protection engineering, frontier defense facilities and the like, and has a wide application prospect.

The present invention discloses a plasma cutting machine for steel structures, belonging to the field of plasma cutting, comprising a base, wherein a cavity for accommodating liquid is provided inside the base, and a support grid frame is fixedly connected to the inner wall of the cavity, and a plurality of support flanges are integrally formed on the upper end of the support grid frame; an X-axial displacement portion is connected to the base, and a Y-axial displacement portion is connected to the movable end of the X-axial displacement portion, and a Z-axial displacement portion is connected to the movable end of the Y-axial displacement portion, and a mounting seat is connected to the movable end of the Z-axial displacement portion, and a plasma gun head is fixedly connected to one side of the mounting seat; cutting of steel structure workpieces is achieved in water, and underwater plasma cutting has a certain cooling effect on the workpiece, cutting torch and arc area. This rapid cooling limits the lateral expansion of the plasma arc at the upper part of the kerf, the melting range of the upper part is "compressed", and the width change of the lower part is relatively small, thereby reducing the taper.

The invention discloses a plasma cutting machine for a steel structure, and belongs to the field of plasma cutting, the plasma cutting machine comprises a base, a cavity for containing liquid is formed in the base, a supporting grid frame is fixedly connected to the inner wall of the cavity, and a plurality of supporting flanges are integrally formed at the upper end of the supporting grid frame; the base is connected with an X-axis displacement part, the moving end of the X-axis displacement part is connected with a Y-axis displacement part, the moving end of the Y-axis displacement part is connected with a Z-axis displacement part, the moving end of the Z-axis displacement part is connected with a mounting seat, and one side of the mounting seat is fixedly connected with a plasma gun head; cutting of a steel structure workpiece is achieved in a water body, underwater plasma cutting has a certain cooling effect on the workpiece, a cutting torch and an electric arc area, transverse expansion of a plasma arc on the upper portion of a cutting seam is limited through rapid cooling, the melting range of the upper portion is compressed, the width change of the lower portion is relatively small, and therefore the taper is reduced.

The application discloses a low-air-pressure-drop flocking bed and a tensile-resistant forming process thereof. The flocking bed comprises a bed body main shell, a multi-air-chamber isolation structure, a tensile-resistant constraint net, a low-air-pressure-drop sealing valve assembly and a flocking surface layer. The bed body is divided into a main load-bearing air chamber and a plurality of auxiliary air chambers by longitudinal and transverse partition plates. The air chambers are communicated through one-way flow-limiting air paths. Local air leakage does not affect overall support. The tensile-resistant constraint net comprises a type I binding structure formed by high-strength fiber filaments. The two ends are fixed on upper and lower panels through high-frequency hot melting welding. The constraint net limits lateral expansion deformation of the bed body after inflation, keeps the bed surface flat, and adopts a double sealing mechanism of an elastic sealing diaphragm and a check valve core to greatly reduce air pressure attenuation at the valve. The forming process comprises the following steps: material compounding, high-frequency welding of binding filaments, air chamber partition plate welding, overall mold welding, air tightness detection and electrostatic flocking. Process parameters of each step are quantifiable and controllable, and the process is suitable for large-scale production.

This invention relates to the fields of microelectromechanical systems (MEMS) and new energy technologies, and discloses a piezoelectric energy harvester based on a nonlinear gradient negative Poisson's ratio structure. Its elastic matrix has a fixed end and a free end, with a negative Poisson's ratio structural segment on it. The piezoelectric transducer element is bonded to the surface of the negative Poisson's ratio structural segment via an epoxy resin adhesive layer. The core innovation lies in the nonlinear monotonically decreasing thickness of the elastic matrix from the fixed end to the free end along its length. This change profile is defined by a specific cubic polynomial function, which can accurately approximate the theoretical model of an isostress beam, making the stress distribution on the matrix surface tend to be uniform during vibration. Simultaneously, the lateral expansion characteristics of the negative Poisson's ratio structural segment and the longitudinal stress enhancement effect of the nonlinear thickness synergistically amplify the charge output of the piezoelectric element. This invention significantly improves the utilization efficiency of piezoelectric materials and the power density of the energy harvester, and has the advantages of compact structure, high energy conversion efficiency, and mass production via 3D printing.

The invention belongs to the technical field of impact protection and energy absorption, and particularly relates to a double-platform energy-absorbing buffer material with a negative Poisson's ratio characteristic, which comprises a top layer, an energy-absorbing layer group and a bottom layer which are fixedly arranged in sequence, the energy absorption layer set is composed of a plurality of stacked energy absorption layers, and each energy absorption layer comprises a plurality of energy absorption units arranged in a rectangular array. Each energy absorption unit comprises two orthogonally-arranged energy absorption unit cell structures, each energy absorption unit cell structure forms a first energy absorption cavity through a connecting face and a first inwards-concave structure, and a transverse rod and a second inwards-concave structure are arranged on the outer side of each first inwards-concave structure to form a second energy absorption cavity. The adjacent energy absorption units in the layers are connected through transverse rods, and the energy absorption layers are fixed through connecting faces. By means of various step-by-step buckling deformations of the two-stage concave structure, the first stress platform and the second stress platform which are independently adjustable are sequentially generated in the compression process, and efficient two-stage energy absorption is achieved; the three-dimensional structure has the negative Poisson's ratio effect and multidirectional bearing capacity, and can effectively avoid transverse expansion due to compression.

The application relates to the technical field of display screens, and discloses a display screen with extendable auxiliary screens, which comprises a main display screen and a docking station. The inside of the docking station is provided with a lateral expansion mechanism and a vertical expansion mechanism. The lateral expansion mechanism comprises lateral expansion grooves arranged on the left and right sides of the docking station, the two lateral expansion grooves are staggered, the inside of the lateral expansion groove is provided with a fixing groove, the inside of the fixing groove is provided with a horizontal moving assembly, and the horizontal moving assembly is connected with a lateral auxiliary screen through a first pushing assembly. The priority order of the auxiliary screen ejection and the fixed size ratio are set, the layered storage structure is combined, the display area is sufficiently expanded, the storage volume of the equipment is minimized, the portability of the equipment is improved, the cross rail system is adopted to provide independent movement tracks for the auxiliary screens, the hierarchical locking and releasing mechanism is matched, and the orderly ejection and retraction of the auxiliary screens are realized.

The invention belongs to the field of urban underground space, and provides a protection lap joint method for a lateral expansion waterproof layer and an underground structure obtained through the method, and the method comprises the steps that a foundation pit is excavated, the excavation part is the distance from the upper portion of a newly-built structure to the ground, then waterproof construction is carried out, and construction of a newly-built structure body is carried out; the fender posts and the existing structure are cut for the first time, so that the existing structure communicates with the newly-built structure; the protection plate is placed between the existing structure waterproof layer and the fender post; the fender posts and the existing structure are cut for the second time, and then the waterproof layer of the existing structure and the waterproof layer of the newly-built structure are in lap joint; and the newly-built structure and the existing structure are poured together.

The invention discloses a detonation wave lateral expansion effect solving method based on a generalized ZND theory. The method is suitable for calculating propagation parameters such as the curvature radius, the shock wave structure and the velocity loss of detonation waves under the lateral expansion effect. Solving flow field parameters after detonation waves through a generalized ZND theory, calculating an interface angle and a shock wave angle of lateral expansion of the detonation waves in combination with an oblique shock wave relational expression and a Prandtl-Mayer relational expression, fitting and calculating the curvature of the detonation waves through the geometrical relationship between the interface angle and the height of the detonation waves, updating the curvature radius of a generalized ZND model, and calculating the curvature of the detonation waves. And carrying out iterative calculation on the detonation wave propagation process until the solution is converged. The calculation method provided by the invention is accurate and reliable, has universality, and is closer to a steady-state solution of the detonation wave influenced by lateral expansion by considering the curvature influence, so that theoretical and technical supports are provided for the detonation mechanism and detonation propulsion related fields.

To provide a coated electrode for arc welding that is used in welding of a structure in an ultralow temperature region, from which weld metal having excellent strength and a lateral expansion amount equal to or higher than a desired value can be obtained.SOLUTION: A coated electrode for arc welding has regulated contents of Fe, C, Cr and Ni to the total mass of the electrode, and contains 0.001 to 0.400 mass% Nb, 0.001 to 0.400 mass% V, and 0.001 to 0.020 mass% N. A value A1 is 0.120 or more and 0.500 or less, and a value A2 is 0.10 or less. A1 is [Nb]W+[V]W, and A2 is 1.22×([Cr]W+[Mo]W+0.7×[Nb]W)-([Ni]W+35×[C]W+20×[N]W+0.25×[Cu]W)-10.0. [Element]W is a value obtained by expressing the contents of the elements in the coated electrode for arc welding by mass%.SELECTED DRAWING: None

The application discloses a paper intaglio printing machine transverse expansion and contraction register error intelligent control method and related equipment, belongs to the technical field of paper intaglio printing machine electronic shaft control system, and through collecting printing process parameters and environmental humidity and temperature, calculating a theoretical oven temperature and a fan air speed, assigning the theoretical oven temperature and the fan air speed to corresponding oven setting values for printing, collecting transverse expansion and contraction register errors generated during printing, establishing an RBF neural network control model between the transverse expansion and contraction register errors and the oven temperature and the back fan air speed, outputting compensation amounts of the oven temperature and the back oven air speed, and accumulating the control compensation amounts to the theoretical oven temperature and the back oven air speed, the transverse expansion and contraction register error intelligent control is realized, the problem that direct modeling control of the transverse expansion and contraction register error is difficult is solved, and high-precision control of the transverse expansion and contraction register error of the water-based ink paper intaglio printing machine is realized.

The invention discloses a high-bearing-capacity steel pipe pile device which comprises a steel pipe pile unit, the steel pipe pile unit is provided with a transverse expansion unit coaxially connected with the steel pipe pile unit, and the transverse expansion unit is provided with a mechanism which is inserted into a soil layer around the steel pipe pile unit or extruded with the soil layer around the steel pipe pile unit to enhance the bearing capacity of a steel pipe pile structure. The invention further discloses a construction method of the high-bearing-capacity steel pipe pile device. The bearing capacity of the steel pipe column can be effectively improved, the self-strength of the pile structure is fully utilized, materials are saved, the construction cost is reduced, the purposes of reasonable technology, economy, feasibility and ideal effect are achieved, and the steel pipe column can be widely applied to the technical field of foundation building and foundation construction.

The present invention relates to a mechanical superstructure with a transverse expansion type and a Poisson's ratio of different signs under tension and compression. The four outer diagonal rods of the transverse expansion type combined hexagonal structural unit and the two middle long vertical rods form an outward convex hexagon, and the four inner diagonal rods and the two middle long vertical rods form an inward concave hexagon. The hinges of the two outer diagonal rods at the upper and lower ends are respectively connected to the hinges of the two inner diagonal rods by a short vertical rod; the middle parts of the outer diagonal rods and the inner diagonal rods are each provided with a composite hinge, and the composite hinge includes four short rods, which are hinged and connected end to end in sequence to form a foldable or unfoldable quadrilateral, and two oppositely arranged hinges are respectively connected to the outer diagonal rods / inner diagonal rods. In the initial state, the composite hinge is in a folded state and perpendicular to the outer diagonal rods / inner diagonal rods. At this time, the composite hinge can only withstand pressure but not tension. The present invention can achieve a cross-sectional deformation characteristic that exhibits transverse expansion under in-plane tension or compression, and has a high material utilization rate and a large absolute value of the Poisson's ratio.

The invention relates to the technical field of new energy tools for riding instead of walk, in particular to an electro-tricycle with an expandable space. The vehicle comprises a driving assembly and a carriage assembly, an expansion assembly is installed on the side face of the carriage assembly, the expansion assembly comprises a folding state and a lateral unfolding state, the expansion assembly expands the space of the carriage assembly through lateral unfolding, the carriage assembly communicates with a ventilation assembly, and an electricity storage system is connected with a charging assembly through a wire. Through the expansion assembly installed on the side face of the carriage assembly, switching of two states of folding and lateral unfolding of the carriage space is achieved, the size of the carriage space can be flexibly adjusted according to the actual use scene, and the compact requirement for daily riding instead of walking is met; and the capacity of the carriage can be rapidly expanded under the scenes such as field camping and self-driving travel needing larger carrying space, the carrying efficiency and the use convenience are improved, the folding and unfolding operation of the expansion assembly is simple and convenient, a user can rapidly complete space adjustment, and the use flexibility is improved.

The utility model relates to a novel thin stone decorative inner wall. The structure comprises a structural floor slab and a structural wall, a horizontal steel plate, a vertical steel plate, a plurality of lateral expansion bolts and a stone panel are arranged at internal corners of the structural floor slab and the structural wall, bolt bodies of the lateral expansion bolts are correspondingly inserted into set positions of the structural wall respectively, the horizontal steel plate is fixed on the structural floor slab through the expansion bolts, and the vertical steel plate is fixed on the structural wall through the stone panel. The bottom end of the vertical steel plate is vertically welded to the horizontal steel plate, the vertical steel plate is attached to the structural wall, the inner side face of the vertical steel plate is welded and fixed to a nut of the lateral expansion bolt, a ground decoration layer is arranged on the structural floor, and the stone panel is bonded to the outer side face of the vertical steel plate through a special stone adhesive. The stone panel covers the vertical steel plate, and the bottom end of the stone panel perpendicularly abuts against the ground decoration layer. After the structure is adopted, the utility model has the characteristics of firm structure, few installation parts, low stone and steel cost, convenient installation procedure and wide application range.

The invention discloses a method for measuring the lateral expansion coefficient of expansive soil, which comprises the following steps of: aiming at the stress and deformation characteristics of a flexible support structure under the condition of permitting reinforcement soil deformation, fitting a lateral expansion force relational expression and a vertical expansion strain relational expression by adopting a cuboid test piece and combining humidifying two-dimensional expansion test data, and determining the lateral expansion coefficient of the expansive soil. The stress and deformation of a test piece are analyzed by utilizing elastic mechanics, a theoretical horizontal strain relational expression and a theoretical vertical strain relational expression are established, and a lateral expansion coefficient calculation formula of expansive soil is obtained by combining a lateral expansion force relational expression, a vertical expansion strain relational expression, the theoretical horizontal strain relational expression and the theoretical vertical strain relational expression. The formula can be used for calculating the engineering field lateral expansion coefficient; the obtained lateral expansion coefficient can be used for swelling soil humidifying lateral deformation, stress analysis, humidity stress field and displacement field calculation and flexible supporting structure reinforcement spacing calculation, and has the advantages of being high in precision, easy to operate and easy to popularize.

The application discloses a cast-in-situ concrete arc-shaped beam reinforcing device and a reinforcing method, and relates to the technical field of reinforcing cast-in-situ concrete arc-shaped beams, in particular to a cast-in-situ concrete arc-shaped beam reinforcing device and a reinforcing method. The variable processing structure is a multi-single-body hinged hinge plate, cooperates with a phase-change liquid capsule with a built-in phase-change material and a flexible steel sheet, and can realize accurate fitting and rigid support of arc-shaped beams with different curvatures; the rigid support structure is driven by a gear shaft flywheel with universal shaft synchronous transmission to drive a stacked-tooth assembly support rod to form an overall support frame, and simultaneously utilizes a piston connecting rod to compress hydraulic oil to offset lateral expansion force of concrete; the near-vibration vibrating structure can automatically adjust the position according to the curvature of the hinge plate, and through hydraulic linkage, a vibrating rod can be turned by 90 degrees and automatic vibrating operation can be completed; the application can be flexibly adapted to various curvature arc-shaped beams, can eliminate surface concave-convex defects of the beam body, can cover edge corner easy-to-miss vibrating areas, and can avoid damage to the formwork and the reinforcing steel bar caused by manual vibrating.

The gear turning clamp comprises a clamp body, a cone base and an expansion sleeve, the cone base is fixed to the clamp body, the interior of the cone base is hollow and connected with a pull sleeve in a sliding mode, the expansion sleeve is installed at the top end of the pull sleeve, and the expansion sleeve and the cone base are provided with inclined faces which are matched with each other and attached to each other. The clamp body is provided with a first driving source for driving the pulling sleeve to ascend and descend, a pressing claw used for pressing a workpiece and a second driving source for driving the pressing claw to ascend and descend, the pulling sleeve and the expansion sleeve are driven to move downwards through the first oil way, and the expansion sleeve expands and fixes the workpiece from the side direction by means of the abutting relation of the inclined faces. And the second oil way is combined to drive the pressing claw to move downwards to press and fix the workpiece in the vertical direction, multiple clamping and fixing of the workpiece are achieved, the better fixing effect is achieved, the good fixing effect can be achieved for all large-specification and large-size workpieces, and therefore the follow-up machining precision is ensured.

The utility model provides an inclined arc self-adaptive pre-tightening expansion device which is arranged between a die and a die holder of an oil press, so that the die and the die holder are locked. The inclined arc self-adaptive pre-tightening expansion device comprises a wedge block I and a wedge block II, the width of the wedge block I is gradually reduced from the first end to the second end, and the width of the wedge block II is gradually reduced from the first end to the second end; the first end of the wedge block I is in contact with the second end of the wedge block II, and is positioned between the die and the die holder; the second end of the first wedge block makes contact with the first end of the second wedge block and is located on the outer side of the mold and the mold base. According to the oblique arc self-adaptive pre-tightening expansion device, the nut is pre-tightened, the disc spring set is compressed, the first wedge block and the second wedge block slide relatively, transverse expansion of the oblique arc self-adaptive pre-tightening expansion device is achieved, a mold and a mold base are locked, the oblique arc self-adaptive pre-tightening expansion device is small and exquisite in structure and easy and convenient to operate, and the wedge blocks can be pre-tightened only by one person through a wrench.

The present invention relates to the technical field of gas turbine hot end cooling, and discloses a flat cat-ear air film hole cooling structure and a construction method for gas turbines, comprising a solid wall with an outer wall surface and an inner wall surface, the outer wall surface being used to contact a high-temperature mainstream; the air film hole comprising an elliptical column section opened on the solid wall and an expansion section connected to and coaxial with the elliptical column section, the connection between the elliptical column section and the expansion section being an inlet profile line, a cold air inlet being formed on the inner wall surface at one end of the elliptical column section away from the expansion section, a cold air outlet being formed on the outer wall surface at one end of the expansion section away from the elliptical column section, and the profile line of the cold air outlet being an outlet profile line. The present invention can form an ideal anti-kidney vortex structure, promote the lateral expansion of cold air, increase the air film coverage area in the direction of the air film, enhance the air film wall attachment effect, thereby improving the air film cooling efficiency, and at the same time can form a relatively uniform slit-shaped outflow, reducing the aerodynamic loss of the mixing of cold air and the mainstream.

An energy return device for a midsole of a shoe comprises a resilient foam or matrix structure, such as a domed disk, around a cavity. The resilient structure is arranged to collapse into the cavity under foot strike pressure. The structure may initially resist the pressure primarily by compression forces directed around the cavity. As the cavity collapses these forces may provide decreasing vertical spring rate as the structure bends or as the forces become less vertical, causing the structure to stay more compressed through the midstride and energy return to be delayed until the user has moved further forward in their stance. At full collapse the material of the structure may resist further downward force of the user by direct compression. A lateral expansion limiter may resist lateral expansion to increase vertical force supplied by the compression forces around the cavity and reduce interference with other components.

The invention relates to a three-dimensional adjustable electric energy metering device replacement auxiliary platform, which comprises a platform main body and four supporting legs, and is characterized in that the platform main body is provided with a transverse expansion structure, an adjusting structure and a lifting structure; the transverse expansion structure comprises two transverse movable adjusting plates and a driving assembly, the transverse movable adjusting plates are located in the grooves in the two sides of the platform body respectively, and the transverse movable adjusting plates stretch or retract through the driving assembly. The adjusting structure comprises a plurality of shape taking strips and an elastic assembly, a sliding groove is formed in the platform body, the shape taking strips are arranged in the sliding groove in a sliding mode, and the elastic assembly is used for limiting sliding of the shape taking strips. And the lifting structure is used for controlling the lifting of the platform main body, so that electrified parts possibly touched by mistake in the transverse, longitudinal and vertical dimensions in the cabinet in the operation process are effectively isolated.

The utility model relates to the related technical field of conveyor belt sweepers, in particular to an efficient and energy-saving sweeping device of a belt conveyor, which comprises a support and a roller rotatably mounted on the support, and the roller is driven to rotate by a driving source mounted on the support; the rotating direction of the roller is opposite to the running direction of the conveying belt; a bidirectional thread cleaning part is formed on the roller and is symmetrically arranged from the middle of the roller to the two ends of the roller through a left spiral end face and a right spiral end face; according to the utility model, the rotation direction of the roller driven by the driving source is opposite to the running direction of the return conveying belt, so that the bidirectional thread cleaning part is in linear contact with the end surface of the conveying belt, and the contact area between the bidirectional thread cleaning part and the conveying belt is increased; when the roller rotates, the roller generates a bidirectional transverse expansion force, so that particle materials adhered to the surface of the conveying belt are brushed off, thorough cleaning is achieved, and the effects of aligning and deviation prevention are achieved.

This invention relates to the field of hot-end cooling technology for gas turbines, and discloses a B-type film cooling hole structure and construction method for gas turbines. The structure includes a solid wall with an outer wall surface and an inner wall surface, the outer wall surface being used to contact the high-temperature mainstream. Film cooling holes are obliquely arranged on the solid wall, each comprising a coaxial and connected cylindrical section and an expansion section. A connection port is formed at the junction of the cylindrical and expansion sections, and the profile of the connection port is a circular inlet profile. The end of the cylindrical section away from the expansion section penetrates the inner wall surface to form a cold air inlet, and the end of the expansion section away from the cylindrical section penetrates the outer wall surface to form a cold air outlet, the profile of the cold air outlet being an outlet profile. This invention can form an ideal reverse kidney vortex structure, promoting the lateral expansion of cold air, increasing the transverse coverage area of ​​the film cooling system, improving the film cooling adhesion effect, and thus improving the film cooling efficiency.

The utility model belongs to the fireworks manufacturing technical field especially is a kind of demoulding auxiliary device of fireworks making machine, including metal support, the bottom fixed mounting of metal support has metal leg, the inside fixed mounting of metal support has fixed plate.Working when the first motor in third protective housing drives movable shaft and movable rod and goes up jacking, drives the whole ascending of receiving plate and fourth protective housing on it, subsequently the second motor in fourth protective housing drives rotating gear, drives moving rod and connecting rod, make the sliding rod of inside outward lateral expansion, prop up the paper tube on mould, the sliding rod of expansion can adapt to different shape, avoid replacing parts when carrying out demoulding to different shape paper tube, then first motor moves downward and makes paper tube drop, and the model after demoulding is moved to inclined plate by first rotating shaft, and is slid out by inclined plate guide guiding device, in this process, the use of manpower can be avoided, and the time used for demoulding can be reduced.

An expansion structure for a cabin (1) is provided with: a first housing (10) having a first side expansion part (11); a second housing (20) that has a second lateral expansion section (21) that moves laterally together with the first lateral expansion section (11), and that expands the cabin (1) upward by moving upward; and a wall structure (30) provided at the side end (1a). The wall structure (30) has: a first plate (31) provided to the first side expansion section (11); a second plate (32) provided to the second lateral expansion section (21); a first guide rail (33) and a second guide rail (34) disposed on both surfaces of the second plate (32); and a shutter (35) that is guided by the first guide rail (33) and the second guide rail (34), and that shields a gap (C) provided between the first guide rail (33) and the second guide rail (34) when the shutter expands upward.

The invention relates to the technical field of non-woven fabric setting and guiding, in particular to a self-adaptive energy-saving conveying mechanism of a non-woven fabric setting machine, which comprises a guide roller mounted in a non-woven fabric setting machine shell, and lateral telescopic grooves are symmetrically formed in the inner walls of the two sides of the non-woven fabric setting machine shell. According to the self-adaptive energy-saving material conveying mechanism of the non-woven fabric setting machine, the lateral telescopic grooves are symmetrically formed in the inner walls of the two sides of the non-woven fabric setting machine shell, the adaptive width of non-woven fabric is adjusted through the self-adaptive lateral material guide limiting seats in the lateral telescopic grooves, and therefore the self-adaptive stability is greatly improved, and the adaptation degree is improved; and an embedded guide housing is fixedly assembled in the lateral telescopic groove, and a flow channel in the embedded guide housing is communicated with a dust suction groove in the self-adaptive lateral material guide limiting seat, so that flying chips in the setting machine can be quickly sucked away, and the cleanliness of air in the setting machine is improved.

The utility model relates to the technical field of parallel shaft speed reducer accessories, in particular to a high-stability parallel shaft speed reducer box body which comprises a main box body, a lateral telescopic opening is formed in the upper end of the outer wall of a box body output shaft hole, a lateral assembly groove is formed in the inner side face of the box body output shaft hole, and a lateral telescopic pipe is assembled in the lateral telescopic opening in a sliding mode. Lateral adjusting supporting rods used for controlling the lateral telescopic pipes to move horizontally are fixedly assembled in the lateral assembling grooves. According to the high-stability parallel shaft speed reducer box body, an electric control controllable lateral telescopic pipe device is additionally arranged at the position of an output shaft, the stability of an extension shaft outside the output shaft can be effectively guaranteed, and it can be guaranteed that the transmission efficiency of a system is higher; the structural design of the electric control telescopic device is adopted, the rotation stability of the output end can be improved according to the extension length of the external output shaft, and the stability of the output end is enhanced; in addition, the device adopts a convenient structural design, and later maintenance is also facilitated.

The invention discloses a production process of a precisely aligned veneer artificial board, comprising the following steps: designing and proofing; batch-producing special base paper; printing textures on the special base paper to obtain printed decorative paper; dipping the printed decorative paper in glue, cutting to obtain decorative adhesive film paper; calibrating and hot pressing to obtain the precisely aligned veneer artificial board. The invention designs a specific special base paper, effectively reduces the transverse expansion rate and the longitudinal expansion rate and the difference therebetween, and has good dimensional stability. In subsequent cutting and processing steps of the special base paper, only fine-tuning is required, and processing is convenient. Moreover, the number of times the transverse and longitudinal expansion rates of the base paper are measured by a board processing plant can be reduced to a certain extent, thereby improving production efficiency. At the same time, various production parameters of the entire production line are designed for the special base paper, and the deviation is minimized while ensuring quality, so that the alignment deviation of the synchronously aligned veneer artificial board is ensured to be no more than 1 mm from all links, thereby achieving precisely aligned grains.