326results about How to "Even by force" patented technology

The invention relates to the technical field of camera driving devices, in particular to a driving structure and an optical anti-shake camera. The driving structure comprises a base body, a module body, a module driving component, a deflection component and an anti-shake driving component, wherein the module body is disposed in the base body, and has a fixedly disposed image sensor and a lens moveably disposed relative to the image sensor along an optical axis direction therein; the module driving component is disposed in the module body and connected to the lens, and drives the lens to move toward or away from the image sensor; the deflection component is installed in the base body relative to the movement of the base body, and provided with the module body; and the anti-shake driving component is disposed in the base body, and coupled to the module body for driving the module body to deflect relative to the optical axis. The optical anti-shake camera with the driving structure provided by the invention is higher in imaging quality.

The invention discloses a combined-type cable dome structure for an elliptic plane with an unequal-height boundary. The combined-type cable dome structure comprises an outer-ring beam arranged on unequal-height capitals of a lower structure. The outer-ring beam adopts a space-curve form which changes along with the elevation of capitals of the lower structure. The horizontal projection of the outer-ring beam is ellipse. An inner-ring beam is arranged above the middle portion of the outer-ring beam. Inhaul cables and ridge cables are arranged on the outermost ring of the outer-ring beam and the inner-ring beam through a levy-type structure, and inhaul cables and ridge cables are arranged within the outermost ring through a Geiger-type structure. A connecting beam for a balancing cable is arranged on the inner-ring beam additionally, and the balancing cable is arranged between the inner-ring beam and the outer-ring beam additionally. The combined-type cable dome structure can be applied to a structural engineering of which unequal-height horizontal projection of the boundary is an ellipse plane, the structure is forced uniformly, and the stability is strong; node structure is simple, the manufacturing cost is low, and construction is convenient; laying requirements of rigid roofing material can be met.

The invention relates to a 2D carbon/silicon-silicon carbide composite material pin preparation method and a preparation method and structure of a 2D carbon/silicon-silicon carbide composite material pin preform. The pin preparation method comprises 1, preparing a preform through horizontal paving (0 degree)-inclined paving (45 degrees) alternative laying of a 2D carbon fabric, graphite mold-based setting and carbon fiber vertical seaming on the multilayer carbon fabric, 2, depositing a pyrolytic carbon protective layer in the preform, 3, carrying out chemical vapor infiltration (CVI) to obtain a silicon carbide base, 4, cutting a flat blank to obtain a strip-shaped pin blank with the square section, 5, carrying out CVI silicon carbide protection of exposed fibers, 6, carrying out reactive melt infiltration (RMI) treatment, 7, milling the pin blank to obtain a pin with a standard size and 8, carrying out examination to obtain a carbon/silicon-silicon carbide composite material pin finished product. Through combination of CVI and RMI, the preparation method has the advantages of low production cost, short production period, low product porosity, high density and batch production. The ceramic-based composite material prepared by the CVI and RMI has shear strength of 80-100MPa at the room temperature.

The invention relates to a full-automatic thermal cycler hot cover. When a propulsion plate moves, a guide plate and a hot cover supporting plate drive a heating cover plate to synchronously move along a groove and a boss in a side plate of a thermal cycler; when the guide plate moves to slope sections of the groove and the boss, a limiting sensor detects the limiting position of the propulsion plate and sends a signal, a control device receives the signal and stops the rotation of a motor, and the propulsion plate, the guide plate and the hot cover supporting plate stop moving; the groove and the boss in the slope sections ensure that a spring can be pressed downwards by the guide plate, and the spring can produce downward pressure to the hot cover supporting plate to ensure that the heating cover plate which is fixed with the hot cover supporting plate is pressed downwards; and when resistance is applied to the heating cover plate, a counterforce can be produced to the spring, and in the dynamic process, the heating cover plate can adapt to optimal downward pressure by virtue of the automatic elasticity regulation of the spring so as to ensure that the heating cover plate has moderate pressure on 96-pore plates or PCR pipes.

The invention relates to the technical field of unordered feeding, in particular to an unordered feeding device. The device comprises a support and a material bin fixed to the support, and further comprises a stepped feeding device and a material distributing and positioning device; the stepped feeding device comprises a feeding mechanism which is used for lifting workpieces which are rolled intoan outlet of the material bin to the material distributing and positioning device; the material distributing and positioning device comprises a material distributing mechanism and a material shiftingmechanism; the material distributing mechanism comprises a first material channel and a second material channel which are arranged on the two sides of the tail end of a conveying mechanism; and the material shifting mechanism is arranged above the tail end of the conveying mechanism, can do reciprocating motion in the direction perpendicular to the conveying mechanism and can shift the adjacent workpieces on the conveying mechanism to the first material channel and the second material channel separately in the reciprocating motion process. According to the device, the workpieces can be distributed and conveyed, and therefore the feeding efficiency can be improved, and stacking can be prevented.

The invention discloses a cholesteric-phase flexible liquid crystal display device and a preparation method of the cholesteric-phase flexible liquid crystal display device. The cholesteric-phase flexible liquid crystal display device comprises a light absorption layer, a first flexible substrate, a second flexible substrate, a first electrode, a second electrode, a first orientation layer, a second orientation layer, a liquid crystal mixture layer and a light mask plate. Ultraviolet light acts on the flexible liquid crystal display device through the light mask plate, the liquid crystal mixture layer is provided with a polymer wall of a special structure, and capsulation covering is conducted on liquid crystal molecules through the polymer wall formed through a polymerization reaction, so that the cholesteric-phase flexible liquid crystal display device is formed. Compared with display devices of other types, the cholesteric-phase flexible liquid crystal display device has the advantages of being low in power consumption, small in size, low in cost and the like, a capsulation flexible panel of cholesteric liquid crystals is formed in a special mode, the polymer wall has the specific structure, and the cholesteric-phase flexible liquid crystal display device has good photoelectric performance and display and mechanical overall performance.

The invention relates to the field of steel structure monolithic architecture construction, in particular to an overall sliding construction method for a large-span special-shaped space grid pipe truss. The method is characterized by comprising the following steps that 1, a truss erecting field is determined; 2, a trestle type Bailey frame is erected in a foundation trench, and a concrete strip foundation is laid outside the foundation trench; 3, four parallel rails are laid; 4, spliced supporting frames and sliding supporting frames are arranged; 5, the truss is erected through a hoist; 6, vertical and horizontal unloading operating is carried out on the erected truss; 7, the sliding supporting frames are connected with ejectors; 8, synchronous control devices are arranged between the ejectors; 9, the ejectors are started, and the sliding supporting frames are made to synchronously slide to the target position; 10, the sliding supporting frames are dismounted, and a truss support is mounted. Through the steps, the large-span special-shaped space grid pipe truss can be mounted in a sliding mode, the truss is stressed evenly in the sliding mounting process, and deformation is not prone to being caused.

The invention discloses equipment for a flat steel shaping and machining set, in particular to cross cut shears for slitting and leveling flat steel. The cross cut shears comprise a stand, wherein the stand is provided with a hold-down hydraulic cylinder; the two sides of the stand are provided with upright posts; the upright posts are provided with hydraulic pressing mechanisms; a piston rod of the hold-down hydraulic cylinder is connected to a sliding stand; the sliding stand is arranged on a guide post; the two ends of the guide post are connected to the stand; the stand is provided with a lower knife rest; the lower knife rest is provided with a lower blade; the lower end of the sliding stand is provided with an upper blade; the upper blade consists of two blades which are arranged in a reverse V shape; the hydraulic pressing mechanism comprises a fixed cross beam; the fixed cross beam is provided with a pressing hydraulic cylinder; the two sides of the pressing hydraulic cylinder on the fixed cross beam are provided with guide rods; the lower parts of the pressing hydraulic cylinder and the guide rods on the two sides are provided with pressing blocks; and the lower plane of the pressing block is lower than the lower end of the upper blade. Because the upper blade is arranged by adopting a reverse V-shaped design, a plate is uniformly stressed during the shearing process and the problems of easy lateral bending of a spring, easy pass-line deflection of the plate and the like of a conventional normal oblique blade cutting mechanism during the pressing of the spring are prevented; and thus the working stability of the cross cut shears is ensured and the shearing quality and the service life of the blade are greatly improved.

The invention discloses a tire carrying and destacking-stacking system, which comprises a support mechanism, a carrying mechanism and a power device, wherein the support mechanism comprises a first longitudinal beam and a second longitudinal beam which are arranged in parallel, and a support vertical column for supporting the first longitudinal beam and the second longitudinal beam; the carrying mechanism comprises a movable transverse beam and a carrying manipulator; the movable transverse beam stretches across the first longitudinal beam the second longitudinal beam, and is in slide fit with the first longitudinal beam and the second longitudinal beam along the longitudinal directions of the two longitudinal beams; the carrying manipulator is arranged on the movable transverse beam, and is in slide fit with the movable transverse beam along a transverse direction; the carrying manipulator comprises a grasping part used for grasping a tire, and a lifting assembly for controlling the grasping part to move vertically; the power device comprises a longitudinal power device used for driving the movable transverse beam to move along a longitudinal direction, and a transverse power device used for driving the carrying manipulator to move along a transverse direction. According to the tire carrying and destacking-stacking system, full automation of tire carrying and destacking-stacking is realized.

The invention relates to the field of rice cake making, in particular to a rice cake hammering machine for a mortar. The rice cake hammering machine comprises a base, and a stand column is arranged on the base; a cross arm is arranged at the upper end of the stand column, the cross arm is horizontally connected with the stand column or the base in a rotating mode, a motor is arranged at one end of the cross arm, a speed reducer is arranged at the other end of the cross arm, and the motor and the speed reducer are in transmission connection; a rotating disc is arranged at the output end of the speed reducer, a connecting rod is connected to the periphery of the rotating disc in a rotating mode, a push rod is connected with the other end of the connecting rod, the push rod and the connecting rod are connected through a pin roll, a transmission shell is connected to the speed reducer, the push rod and the transmission shell are in vertical slide connection, and the lower end of the push rod stretches out of the shell and then is connected with a hammer. The rice cake hammering machine for the mortar is easy and convenient to operate in the production and processing process and safe and reliable to use, keeps uniform processing intensity on dough, improves the quality of the dough and improves production and processing efficiency.

The invention belongs to the technical filed of plastering, and particularly relates to a plastering device of a building wall. According to the following scheme, the plastering device includes a bottom plate, a driving assembly is arranged at the top of the bottom plate, a feeding assembly is arranged at the top of the driving assembly, a plastering assembly located in an discharging opening of the feeding assembly is mounted at one end of the driving assembly, locating frames fixedly connected with the top of the bottom plate are mounted at the bottoms of the output ends of the two sides ofthe driving assembly, supporting assemblies are mounted on the sides, away from each other, of the two sets of locating frames, the interiors of the locating frames sleeve extensible assemblies, and the same top abutting against frame is mounted between the tops of the two sets of the extensible assemblies. According to the plastering device of the building wall, fixing solidity of the whole plastering device is improved to avoid shaking of the plastering device during running, the accuracy of plastering is improved, the problem that when a traditional plastering device uses a vibration mode for plastering, imbalance stress is between a plastering board and the wall is changed is changed, so that a plastering layer is overall flat and has balance stress, plastering layer falling off is avoided, and the quality and efficiency of plastering are improved.

The invention discloses a single-cylinder dual-function rotary-type compression machinery which comprises an elliptic rotor and an air cylinder; a long shaft of the elliptic rotor equals to the diameter of the air cylinder and is concentric with the air cylinder; the rotary center of the elliptic rotor is concentric with a main shaft; the outer surface of the rotor is always tangential to the inner wall of the air cylinder; a sliding sheet is meshed with the outer surface of the rotor under the action of a spring, and divides a moon-shaped volume into a gas (liquid) inlet chamber Vs and a gas (liquid) compression and exhaust chamber Vd together with the inner wall of the air cylinder and the outer surface of the rotor, and a pair of corresponding working volumes are formed; and the air cylinder is respectively provided with two pairs of gas (liquid) inlets and gas (liquid) exhaust openings. The single-cylinder dual-function rotary-type compression machinery has the advantages of high efficiency, no vibration, stable working, small volume, uniform stress and simple structure, unbalanced force caused by rotation is eliminated; and the single-cylinder dual-function rotary-type compression machinery can be used for a compressor, a fluid pump and a vacuum pump of various gases.

The invention discloses a cross-plate scaffold, which comprises upright pipes, horizontal pipes, an inclined support and a horizontal inclined support, wherein a cross-plate connecting plate is arranged on each upright pipe; each upright pipe passes through a centre hole on the middle part of the cross-plate connecting plate and is fixedly connected with the cross-plate connecting plate; four connecting holes are uniformly arranged at the periphery of the cross-plate connecting plate; the horizontal pipes are connected with the connecting hole at the periphery of the cross-plate connecting plate by horizontal casting connecting devices fixed on the end parts of the horizontal pipes; the inclined support is connected with the horizontal casting connecting devices by an inclined support pin arranged on the end part of the inclined support; the end part of the inclined support is opened, clamped on the upper and lower sides of the horizontal pipes and connected through the horizontal inclined support pin; a plurality of sections of upright pipes are connected through upright pipe connecting pieces; the upper and lower ends of each upright pipe are provided with an adjustable support head and an adjustable base respectively; and each upright pipe is made from a Q345B steel material. The cross-plate scaffold has the advantages of convenient assembly and disassembly, uniform stress and stable support.

The invention discloses a reinforced plasterboard and a preparation method thereof. The plasterboard comprises a plaster base material layer, and a three-dimensional reinforced fiber fabric embedded into the plaster base material layer, wherein the three-dimensional reinforced fiber fabric consists of an upper layer, an intermediate layer and a lower layer; the upper layer and the lower layer are meshed plate fiber layers; the intermediate layer refers to an 8-shaped fiber framework; and the upper and lower ends of the 8-shaped fiber framework are respectively connected with the plate fiber layers on the upper and lower layers. The three-dimensional reinforced fiber fabric serves as a product reinforcement material, and three-dimensional directional enhancement of glass fibers is structurally realized, so that the plate structure is uniform in stress. Compared with gridding cloth layout or short fiber injection and pouring and other processes, the method has the advantages that the breaking strength and compressive strength are greatly improved, and a mechanical guarantee is provided for production of large-specification/size plates. The preparation method disclosed by the invention is simple in process, and the obtained product is good in performance.

The invention provides a continuous grid roller shear slicing system. The continuous grid roller shear slicing system at least comprises a shearing device used for slicing and shearing a continuous grid. The shearing device at least comprises a cutter roll and a power roll, wherein the cutter roll and the power roll are arranged in a roll-pair mode, and the power roll is used for positioning the continuous grid and supplying power to the continuous grid. Cutters used for shearing the continuous grid into single slices are fixedly arranged on the cutter roll in the peripheral direction. The continuous grid roller shear slicing system can accurately position and shear the continuous grid, sizes of single-slice grids after the continuous grid is cut can be effectively guaranteed, and in addition, the whole system guarantees uniform stress on the continuous grid in the cutting process, and can effectively prevent deformation of the grid, effectively guarantee quality of the single-slice grids after the cutting process, greatly reduce rejection rates, improve production efficiency and reduce production cost.

The invention relates to a biological degradable gas-permeable membrane for paper diaper and a preparation method of the biological degradable gas-permeable membrane, and belongs to the technical field of organic macromolecule film. The biological degradable gas-permeable membrane for paper diaper comprises a spunbond nonwoven fabric which is made of natural plant fibers as a raw material, and a membrane layer with polylactic acid PLA as a substrate, wherein the two layers are compounded through thermal pressing; the membrane layer with the polylactic acid PLA as the substrate contains the following components in parts by mass: 50-60 parts of polylactic acid, 40-45 parts of crosslinked polystyrene, 0.5-1.2 parts of a lubricant, 0.01-0.3 part of an antioxidant and 0.1-0.5 parts of color master batch. The biological degradable gas-permeable membrane provided by the invention has certain tensile strength, anti-leakage properties and good air permeability, can be biologically degraded, and is environment-friendly.

The invention belongs to the processing field of nonferrous metal and ferrous metal, which is the clamping system of composite incline. An upper clamp (2) is connected with an upper slide (7) by a hopper chute. The upper slide (7) is connected with a clamping body (1). The upper clamp (2) has incline motion along the upper slide (7) to clamp stretching sheet material (9) downward. A lower clamp (3) is connected with a lower slide (8) by the hopper chute. The lower slide (8) is connected with the clamping body (1). The lower clamp (3) has incline motion along the lower slide (8) to clamp the stretching sheet material (9) upward. The upper clamp (2) and the lower clamp (3) form a clamping jaw together to stretch the stretching sheet material (9). The back end of the upper clamp (2) and the lower clamp (3) is connected with a synchronous clamping device (4). When the driving force of a synchronous clamping drive unit (10) reaches a set value, a synchronous clamping beam stops moving. The invention can make clamping material bear stress evenly, has reliable clamping and is easy to be tested.

The invention discloses a bladder-type storage tank for high concentration hydrogen peroxide, which comprises a storage tank shell body, an injection discharging component and a thin film liquid bag, wherein the injection discharging component is coaxially mounted inside the storage tank shell body; the injection discharging component is constituted of an end cover, a multi-hole pipe, a fixed disc and a support plate; the end cover and the fixed disc are respectively welded on two ends of the multi-hole pipe; the end cover is connected to a storage tank outlet flange; liquid inlet/ outlet channels are respectively opened on the end cover and the fixed disc; the multi-hope pipe is provided with dense small holes in order to make sure the flow area of a propellant; the fixed disc and a support disc are used for mounting the thin film liquid bag and fixing the injection discharging component; the support disc is designed with a diffusion hole in order to prevent the thin film liquid bag from being impacted directly by the pressurized gas; and the thin film liquid bag is uniform in applied force. The advantages are that the bladder-type storage tank is suitable for storing hydrogen peroxide propellant for a long time; the hydrogen peroxide propellant and the pressurized gas are separated by the thin film liquid bag; the pressurized gas is wide in choice; and the hydrogen peroxide won't be catalyzed and decomposed by the pressurized gas.

The invention relates to a tile type shielding device of cylindrical permanent magnets, which comprises a stander, wherein the stander is provided with a supporting component, the supporting component comprises a left half shaft, a hollow cylindrical magnetic core shaft and a right half shaft; the hollow cylindrical magnetic core shaft is provided with two coaxial and parallel cylindrical permanent magnets; the two cylindrical permanent magnets are externally provided with a rotatable shielding body; the rotatable shielding body comprises two tile-shaped shielding boards; the two tile-shaped shielding boards are covered on outer cylindrical surface magnetic poles of the cylindrical permanent magnets; and the tile-shaped shielding boards are rotatablely arranged with the left half shaft and the right half shaft by rotating a connecting disc. The tile type shielding device has the characteristic of uniform forcing since the cylindrical permanent magnets are externally provided with the rotatable shielding body, can achieve the aim of changing the magnetic field intensity of different areas only by inputting smaller power through a power input wheel, and can from into a magnetic loop between the two tile-shaped shielding boards and the hollow cylindrical magnetic core shaft due to the design of the hollow cylindrical magnetic core shaft.

A kind of turnplate type 3-D garage and its' control system, this is its' character: it comprises a upground and underground disc which is upright; there is the fix structure of the central axletree, the disc use the structure supported by steel framework. The parking point was hung on the bracket of the disc, so the parking point displaying symmetrically. There is coding disc go with the main disc in-phase, and just around the coding disc is the sensor which can feedback the circumrotative angle. The sensor couplings with the coding disc, and sends the digital signal to the SCM, enables kinetic system automatically control the turnplate, and a reasonable layout, and secure function.

The invention provides a flexible display device and a mobile terminal. The flexible display device comprises a flexible display screen which has a storage state and an unfolding state; two reels, wherein the two ends of the flexible display screen are wound on the two reels respectively; two housings which contain the two reels respectively, and openings allowing the flexible display screen to penetrate through are formed in the opposite side walls of the two housings respectively; and a telescopic supporting piece, wherein the two ends of the telescopic supporting piece are connected to thetwo opposite side walls of the two housings. When the flexible display screen is in the storage state, the telescopic supporting piece contracts with the approaching of the two housings; when the flexible display screen is in the unfolded state, the telescopic supporting piece is stretched to limit the distance between the two housings. According to the flexible display device, by arranging the two reels, the two ends of the flexible display screen are evenly stressed when the flexible display screen is folded and unfolded, and the telescopic supporting piece can support the flexible display screen and limit the housings, so that flatness and stability of the unfolded flexible display screen are guaranteed.

The invention relates to a production technique of pulley and specifically to a spinning technique of pulley, comprising the following steps of: 1) blanking; 2) performing spinning; 3) upsetting spinning; 4) spinning forming. The external edge of said blank employs orthodrome transition. The spinning technique of pulley provided by the invention improves the shape of the blank, thus the blank is free of fillet transition area; with the orthodrome transition, crack or wrinkle cannot be occurred in the process of spinning. Meanwhile, with this spinning technique, the tooth flute of finished component is thicker than that formed by other techniques; therefore, the strength of pulley can be enhanced obviously and the qualification rate of the pulley manufacture by this spinning technique is improved obviously. The invention belongs to the field of pulley manufacturing technique.

A notching machine for retaining rings comprises a machine frame and is characterized by comprising a feeding device, a guiding and conveying device, a supplying device and a punch device, and the feeding device, the guiding and conveying device, the supplying device and the punch device are sequentially arranged on the machine frame; the feeding device comprises a feeding bin, and a discharging port is formed in the upper part of the feeding bin; the guiding and conveying device comprises an inclined conveying channel and an arc-shaped guiding plate bent downwards. According to the invention, automatic supply can be realized for machining of the retaining rings through motor vibration, raw material of the notching machine can be fed in an orientated mode and conveyed orderly, the angle of the raw material is fixed in the feeding process, and loss of the raw material caused by wrong manual supply directions is avoided; a connecting rod mechanism is adopted for driving an inclined cutter for cutting, stress on all the angles of the raw material is more balanced, the power needed for cutting is smaller, the automation degree and the production efficiency are higher, and the labor cost and the time cost are saved.

The invention discloses a high-speed moving parallel mechanical arm with six degrees of freedom. The mechanical arm comprises a fixed mount, a movable platform, a three-degree-of-freedom wrist, and six moving branch chains which are arranged between the fixed mount and the movable platform and are of a same structure, wherein the movable platform comprises a central plate, three ball arm seats and three groups of connecting rods; each connecting rod group is composed of two parallel connecting rods with the same length; the ball arm seats are rotationally connected with the central plate through one group of connecting rods to form a group of parallelogram structures; the movable platform is provided with three groups of parallelogram structures; the three-degree-of-freedom wrist is fixedly connected with the central plate; three input axes of the three-degree-of-freedom wrist are arranged coaxially or in parallel and are parallel to a rotating axis on the central plate; three groups of gear mechanisms are arranged in the three groups of parallelogram structures; and the rotation of the connecting rods in each group of parallelogram structures relative to the central plate or the parallel movement of the ball arm seats relative to the central plate is converted into the controllable movement of the three-degree-of-freedom wrist.

The invention discloses an outer door opening and closing structure for a large high and low temperature environmental test chamber, and belongs to the technical field of large high and low temperature test chamber outer door driving. The outer door opening and closing structure for the large high and low temperature environmental test chamber comprises a doorframe, a top horizontal rail, a bottom horizontal rail, a door leaf, a door leaf moving framework, a door leaf horizontal movement driving mechanism and door leaf vertical driving mechanisms. The doorframe is fixed to the outer framework of the test chamber, the top horizontal rail is arranged on the outer framework on the upper portion of the doorframe, the bottom horizontal rail is arranged on the ground below the doorframe, the size of the door leaf is matched with that of the doorframe, the door leaf moving framework is hinged to the outer side of the door leaf, the door leaf horizontal movement driving mechanism is fixedly connected to the door leaf moving framework, and the door leaf vertical driving mechanisms are evenly distributed on the door leaf moving framework. Through the combined function of the door leaf horizontal movement driving mechanism and the door leaf vertical driving mechanisms, the function of opening and closing an outer door and the function of heat preservation and sealing in the work process are achieved.

The invention discloses a planet speed reducer which comprises an input flange and an annular gear connected with the input flange through screws. An input shaft is arranged in the input flange through an input shaft bearing, and an output shaft is arranged in the annular gear through an annular gear bearing. The input shaft is connected with a first level sun wheel which is matched with a first level planet wheel. The first level planet wheel is connected with a first level planet frame, and the first level planet frame is connected with a second level sun wheel which is matched with a second level planet wheel. The second level planet wheel is connected with the second level planet frame. The second level planet frame is connected with the output shaft, and the first level planet wheel and the second level planet wheel are respectively arranged on a needle roller through a planet wheel bearing in a rotating mode. The first level planet frame and the second level planet frame are respectively provided with folding edges. The planet speed reducer has the advantages that the plant frame is of a double-edge structure, the planet shaft is even in force, and transmission is stable.

The invention discloses a light and high-strength non-woven fabric production process and aims to solve the problem that traditional non-woven fabric is thick and not enough in strength. According tothe technical scheme, the process mainly includes the following steps of opening, cotton blending, carding, cross lapping, drawing, shaping, cloth storage, rolling and slitting; cross lapping includesthe step that a cotton web is sent from a first carding machine to a lapping machine, the discharge direction of the lapping machine is perpendicular to the feeding direction of the lapping machine,and the web sent from a cross lapping machine is a web having cross texture. According to the light and high-strength non-woven fabric production process, the produced non-woven fabric has the advantages of being light and uniform in strength, meanwhile reinforcement is conducted in the longitudinal direction, and the process is widely applied to packaging and other fields.

The invention relates to a bi-directional sealing elastic tri-eccentric butterfly valve which has the characteristics that a packing seat, a packing component and a packing gland are successively installed to a packing box of the valve body and are fixed by locking nuts and screw rods, and then, the packing box is sealed; the packing component is pretightened by tightening the locking nuts on the screw rods, and a valve plate is fixedly connected with a valve rod through a straight pin; the axis of the valve rod is eccentric with the center of the valve plate and the center of the sealing surface of the valve plate, and the tapered axis of the sealing surface of the valve plate deflects from the cylindrical axis of the valve body; a thrust ring is installed between the valve body and the valve plate, vertical positioning is performed based on the upper and lower surfaces of the axis housing on the back surface of the valve plate as well as the stepped surfaces of the thrust ring, and the valve plate rotates around the valve rod to close or open the valve. The bi-directional sealing elastic tri-eccentric butterfly valve has the advantages that the sealing surface of the valve plate has uniform stress, and the friction and the torque are low, thereby reducing wear and effectively prolonging service life; sealing pressure ratio of a sealing ring to the valve plate can be increased to realize bi-directional sealing, and mediums cannot leak from the connection between the sealing ring and a pressing ring or the valve body.

The invention discloses a rock landslip waterpower starting indoor simulation test method, which belongs to the field of geology calamity forecast technology. The method includes the following steps: a rock test piece containing a real potential slip surface is fetched; the potential slip surface is regarded as the boundary; upper and lower rocks are respectively filled into a sample frame and a sample box, and a cement and a mortar are filled into the sample frame and the sample box; component forces of the gravity parallel to the slip surface and vertical to the slip surface of a simulationlandslip leading edge part to be simulated are regarded as the transverse load initial value and the vertical load initial value; the water pressure of underground water in a slope to a potential slip body in reality is replaced by maintenance of the transverse load and reduction of vertical load value on the potential slip surface; when the displacement rates of the upper sample frame of the rock test piece and an upper rock of the potential slip surface solidified in the frame relative to the potential slip surface are suddenly increased and continuously increased, the landslip is already started, meanwhile the accumulation minimizing amount of vertical load value is equal to the water head height value, that is the starting water head value of the simulation rock landslip. The method can relatively accurately discover the impending landslip state of rock slope.

The invention provides a multifunctional low-dimensional photoelectric material detection platform, effectively solving problems in the prior art. The detection platform comprises a base and is characterized in that a first clamping hand is mounted on the top surface of the base, a rack groove is formed in the right end of the top surface of the base, an arc-shaped rack is slidably arranged in therack groove, a second clamping hand is mounted on the arc-shaped rack, a rotary rod is mounted on the inner bottom surface of the base, a driving gear is mounted at the top of the rotary rod, a driven toothed disc located below the driving gear is mounted on the rotary rod, a sleeve sheathes the rotary rod, the top of the sleeve is connected with a transmission toothed disc, the bottom of the sleeve is connected with a driving toothed disc, and the transmission toothed disc is connected with a motor. The detection platform provided by the invention realizes stretching and bending on a solar cell panel by virtue of the first clamping hand which can move left and right and a second clamping hand on which the arc-shaped rack is mounted as well as a pressure bar, so that the solar cell panelonly bends at the pressure bar and can not be stretched; and by virtue of the sleeve which moves up and down, different detection effects can be achieved, and solar cell panel strength detection efficiency is improved.