35results about How to "Reduce deformation difference" patented technology

The invention discloses a multilayer gradient lattice sandwich panel and a preparation method thereof. Two punched diamond plates with different thicknesses are treated with mold pressing and folding technologies, two pyramid lattice core layers with different core rod part side lengths are prepared, the two core layers are welded with metal panels or partition boards in a circularly interphase distribution form, and the multilayer gradient lattice sandwich panel is obtained. Compared with a non-gradient multilayer lattice structure, the multilayer gradient lattice structure has the advantages that deformation difference among different core layers under the explosion load is greatly reduced, buckling deformation of the core layers are sufficiently utilized, influence of the rear panel by explosion shock is reduced by 50%, and a better protection function is realized. Besides, the characteristic of high porosity of the lattice structure is reserved, and further function composite is facilitated. The sandwich panel has broad application prospects in the fields of safety protection, military and the like by means of the excellent energy adsorption mechanism, low density, high specific strength and specific stiffness and multifunctional composite potentials.

An off-line stretching device is provided with an accepting chamber and a stretching frame. The accepting chamber accepts an advanced film roller and a subsequent film roller. The width of the advanced film roller is expanded while the stretching machine maintains the maintenance area of the advanced film roller sent out from the advanced film roller. After all advanced films are sent out, subsequent films are sent out to the stretching machine from the subsequent roller. In the jointing part installed in front of the stretching machine, the rear end of the advanced film is overlapped with the front end of the subsequent film so as to form an overlapped part. A deposition area is installed at the part of the overlapped part depart from the central part of the maintenance are in B direction. The jointing part is jointed and processed in the deposition area. After jointing and processing, the jointed film is sent to the stretching machine and stretched towards both sides in B direction at the state of maintaining the maintenance area.

Provided is a parallax detection apparatus (3) capable of reducing parallax detection error, even if a camera with a low lens resolution for the pixel pitch of the imaging device is used. The parallax detection apparatus (3) calculates a parallax generated among a plurality of optical systems, and is provided with a PSF equalizer unit (5) that corrects at least one of a plurality of images obtained from each of the plurality of optical systems, so as to cause a point spread of the plurality of optical systems to be equal to a point spread of a predetermined optical system, and a parallax calculation unit (9) that calculates a parallax generated among the plurality of optical systems using an image corrected by the PSF equalizer unit (5).

The invention discloses a mask plate and a net extension method and device thereof. The mask plate and the net extension method and device thereof are used for improving the pixel position precision of the mask plate, and reducing bad color mixing of display products. The net extension method of the mask plate comprises the steps that deformation occurs on the mask plate to be manufactured according to the deformation condition of an evaporation chamber in evaporation technology; and net extension, alignment and welding are carried out on the mask plate in which the deformation occurs.

The invention discloses a reinforced concrete overlapped floor slab, which comprises a prefabricated ribbed construction member plate (12), a lateral reinforcing steel bar (9) and a concrete overlapped layer (10), wherein the prefabricated ribbed construction member plate (12) comprises a bottom plate (1) and a longitudinal rib (2); the longitudinal rib (2) is provided with a lateral through hole (8); the bottom of the bottom plate (1) is provided with a hole or groove (3); a nut (7) is embedded in the hole or groove (3); the nut (7) is connected with a first bolt (4) on a platen (11); and a connecting rod, namely a full-length connecting rod (5) or a short rod (13), is fixedly connected between the platen (11) and the bottom plate (1). During construction, the prefabricated ribbed construction member plate (12) is firstly erected; the bottom of the prefabricated ribbed construction member plate (12) is connected with the platen (11) and is provided with the connecting rod; the lateral reinforcing steel bar (9) is paved at the upper part of the prefabricated ribbed construction member plate (12); the concrete overlapped layer (10) is poured; and the connecting rod is removed after the strength of the concrete overlapped layer (10) reaches the standard. The bottom of the prefabricated ribbed construction member plate is provided with the connecting rod, thereby solving the problem of slab staggering in the construction process, and guaranteeing a flat and beautiful floor slab bottom.

The invention discloses a hot-rolled steel air cooling and stacking method capable of reducing bending of a rail to ensure straightness of the straightened rail to meet standard requirement. The method comprises the following steps: A. laterally laying the rolled rail on a collection bracket for cooling; B. turning over the rail during a cooling process by 180 degrees; C. transferring the turned rail to a stacking position for stacking and air cooling. An original upper side of the rail is turned to be a lower side and the original lower side of the rail is turned to be the upper side after turning over the rail which is laterally laid on the collection bracket and cooled by 180 degrees, thus ensuring uniform cooling of the two sides of the rail and substantially equalizing heat storage of the upper side and the lower side of the rail before cooling, further reducing deformation difference resulting from thermal stress and reducing rail bending of the upper side and the lower side. The lateral bending of the straightened rail which is cooled to the room temperature meets the standard requirement.

The invention discloses a rigid connection construction of a shear beam for splicing prestressed concrete box girders. The rigid connection construction comprises shear beams (1), small longitudinal beams (2), a new bridge box girder (3), an old bridge box girder (4), wet joints (5), shear bolt pins (6) and anchor bolts (7). The rigid connection construction has the advantages of reasonable structure, definite stress, convenient construction, and small traffic impact; besides, the rigid connection construction is economic and safe, is high in fatigue resistance and durability, also has the effect of structure reinforcement, and can enable the prestressed concrete box girders of a new bridge and an old bridge to form a good whole. The invention further provides a construction technology of the rigid connection construction of a shear beam for splicing prestressed concrete box girders.

The invention provides a pantograph carbon sliding plate. The pantograph carbon sliding plate comprises a metal bracket, a carbon strip and an adhesive layer; an adhesive for forming the adhesive layer comprises the following components in parts by weight: 40-70 parts of phenol formaldehyde epoxy resin, 10-16 parts of 2-methyl-4-ethylimidazole and 35-70 parts of copper powder. A curing temperaturedoes not exceed 90 DEG C, when products with different elongations adhere, deformation difference caused by difference of the elongations is reduced, therefore, adhesion strength is improved, and problems of carbon strip breakage, dropping and the like due to deformation of different materials are reduced.

A door panel includes a base board (10) and a decorative panel (20) adhered to the surface of the base board (10). The base board (10) includes at least two splicing units mutually spliced, and a movement clearance (30) is provided between at least two adjacent splicing units. Because of the movement clearances (30), when the door panel deforms due to thermal expansion and cold contraction, the deformation amount of each splicing unit of the base board (10) can not be accumulated, the difference between the deformation amount of the base board (10) and the deformation amount of the decorative panel (20) can be reduced, thus the problem of degumming caused by the large difference between the deformation amount of the base board (10) and the deformation amount of the decorative panel (20) can be resolved, and the door panel is more stable. An air conditioner with said door panel is also disclosed.

The invention discloses a rotary sample stage device based on an atomic force microscope. The device includes a top cover, thin ring bodies, a base, a pin and a spring, wherein the base is fixed on anatomic force microscope disposing table, the thin ring bodies are fixedly connected with the base, the top cover is matched with the thin ring bodies and the base in shape, a sample is driven throughrotation of the top cover to realize free rotation, different convex teeth are sequentially dialed by the spring, accurate small-angle rotation is realized, and the auxiliary positioning function isprovided by the pin and the spring. The device is advantaged in that the device can be adaptive to the small low sample disposing space of the atomic force microscope, an extra rotation angle scale isprovided for the sample under the strict size and weight limits, the self-locking function is achieved, functions of the atomic force microscope are improved while normal operation of the atomic force microscope is not influenced, and application occasions and the research scope are expanded.

The invention discloses a turbocharger heat insulation structure which comprises a turbine box and a bearing box, wherein the turbine end of the bearing body is jointly connected with the turbine box in a step-structure mode, a circulating cooling water cavity is arranged at the inner end side, close to the turbine, of the bearing body, a water inlet and a water outlet which penetrate through the circulating cooling water cavity are arranged on the bearing body, and the bearing body and the water cavity are cast and molded by using the same material. According to the invention, an insulation sleeve structure can be omitted, a joint type contact seal can be designed between the bearing body and the turbine box and the joint position can be designed with a step section so as to reach the sealing effect; the water cavity arranged at the inner end part, close to the turbine, of the bearing body can be used for achieving the heat insulation effect; and the bearing body and the water cavity are cast and molded by using the same material, so that the deformation difference between the bearing body and the water cavity can be lessened. Compared with the prior art, the turbocharger heat insulation structure provided by the invention has the advantages that the management cost of parts can be lowered because insulation sleeve parts and dies are not required; and meanwhile, the part assembly amount can be reduced and the transferred assembly efficiency can be improved, thus the turbocharger heat insulation structure is suitable for popularization.

The invention discloses a bidirectional movable support structure for a building. The bidirectional movable support structure comprises a base, a push-pull rod and a spring, wherein the base is fixedly connected with the fixed building, the push-pull rod is fixedly connected with a movable component, and the spring is arranged between the base and the push-pull rod; the outer end of the push-pull rod is connected with the movable component, snap rings are respectively arranged at the inner end and the middle section of the push-pull rod, and a front transmission guide pipe and a rear transmission guide pipe which extend outwards are arranged between the two snap rings; the spring is arranged at the outer circles of the two transmission guide pipes in a sleeving way; stop flanges for pressing against the spring are arranged at the end parts of the two transmission guide pipes; a cylindrical cavity for sheathing the two transmission guide pipes and the spring is arranged on the base, and a push-pull hole through which the push-pull rod penetrates is arranged at one end of the cylindrical cavity; and the outer sides of the stop flanges of the two transmission guide pipes are pressed against the two ends of the cylindrical cavity. According to the invention, movable support having pretightening force in two directions is realized between the movable component and the fixed building, and the pretightening force is changed into the support force of the fixed building to the movable component. The bidirectional movable support structure also has the characteristics of simple structure, easiness in installation and easiness in maintenance.

The invention relates to a layered composite plate, in particular to a device and a method for preparing a stainless steel / aluminum / stainless steel layered composite plate. The invention provides a novel device and method for preparing the stainless steel / aluminum / stainless steel layered composite plate so as to solve the problem that an existing device and method for preparing the stainless steel / aluminum / stainless steel layered composite plate have the defects in the prior art. A laminated plate sequentially penetrates through a gripping device and a rolling mill and is gripped and fixed through a clamp device, the working distance and the roll gap distance of the gripping device and the roll gap distance of the rolling mill are adjusted to be smaller than the thickness of the laminatedplate, and the rolling speed of the rolling mill and the moving speed of a clamp are set; and tension in the rolling direction is generated through the difference between the moving speed of the clampand the linear speed of a roller, drawing deformation is introduced in the rolling process through resistance generated by the gripping device, deformation nonuniformity of metal difficult to deformon a surface layer and metal prone to deform at the center portion is restrained or eliminated, and interface bonding is good.

The invention discloses a developing device, which comprises the following parts: developing rod, which possesses magnetic rod to transmit developing agent and develops electrostatic latent image; control part, which controls developing agent quantity from developing rod to electrostatic latent image; reflux board, which refluxes excessive developing agent out of control part, scraping and erasing part, which is set as the opposite surface developing rod of first gap and second gap limited by developing rod and control part and transmits the scraping and erasing to the developing agent of first gap, wherein the scraping and erasing part proceeds positive charging on the developing agent of initial charging.

The invention belongs to titanium alloy heat treatment technology, in particular to a tool for reducing ion nitriding deformation of titanium alloy thin-walled rotary parts. The tooling is made of titanium alloy TC4. The tooling is a cylindrical structure, and the wall and the bottom plate are separated structures, and the wall is buckled on the bottom plate. There are several grooves on the wall, the grooves are parallel to each other in the longitudinal direction, and On the same circumference, the bottom surface is provided with centrally symmetrical array holes. The temperature measuring thermocouple is inserted through the array holes reserved on the bottom plate of the tooling and is adjacent to the parts in the tooling. Only one part is placed in each tooling to reduce the deformation difference and degree of deformation of the same batch of parts after ion nitriding. During work, tooling, titanium alloy parts and cathode disk are concentric. It can ensure that the voltage consistency of each part of the inner surface of the tooling is good, and the electric field in the tooling is relatively uniform. According to the actual production, several tools of the same specification can be stacked vertically and coaxially to improve production efficiency.

Embodiments of the present invention provide a mask plate, a net-stretching device, and a net-stretching method. The mask plate-stretching device includes: a deformation heating mechanism for adjusting the environment of the mask body to be assembled and the frame to be assembled temperature and keeping the ambient temperature equal to the evaporation temperature, so that the mask body is deformed; the first force applying mechanism is used to apply pressure to the frame, so that the frame generates a resisting force to offset the deformed The inner shrinking force exerted by the mask body on the frame; the net-stretching alignment mechanism is used to stretch and align the deformed mask body and the frame. In addition, the problem of reducing the positional accuracy of the vapor-deposited pixels due to the deformation of the frame at the vapor-deposition temperature is solved, and the purpose of improving the positional accuracy of the vapor-deposited pixels is achieved.

The invention discloses a grating ruler and a ruler shell. One end, far from a ruler shell opening in a vertical direction, of a ruler shell body is provided with an installation part for positioningwith mechanical equipment, the installation part is provided with an expansion and contraction adjustment part in the length direction of the ruler shell body, the expansion and contraction adjustmentpart is provided with an installation hole for fixing with the mechanical equipment, first expansion and contraction adjustment cavities are arranged between two ends of the expansion and contractionadjustment part in the length direction of the ruler shell body and the installation part, a second expansion and contraction adjustment cavity for buffering and adjusting expansion and contraction of the ruler shell body in the vertical direction is arranged between the bottom of the expansion and contraction adjustment part and the installation part, and two ends of the second expansion and contraction adjustment cavity penetrate the installation part. The ruler shell is fixed with the mechanical equipment through the installation hole; when the ruler shell bears vibration, assembly stressand thermal load, buffer deformation is realized through the expansion and contraction adjustment part, external stress strain and thermal load can be unloaded effectively, deformation difference of the grating ruler and the mounting surface support is reduced, and impact of temperature assembly stress on grating measurement accuracy is reduced.

The invention provides a solar cell piece. The solar cell piece comprises a silicon substrate, and a front main gate electrode and a back main gate electrode which are respectively arranged on the front surface and the back surface of the silicon substrate. The end portion of the front main gate electrode is provided with an arc structure protruding outwards; and / or the two ends of the back main gate electrode are provided with arc structures protruding outwards. According to the solar cell piece, the end portion of the front main gate electrode is provided with the arc structure to reduce thestress of the junction of a welding region and a non-welding region when welding is performed; the two ends of the back main gate electrode are provided with the arc structures to reduce the stress generated by an open region when welding is performed; the stress concentration of the front main grid electrode and the back main grid electrode of the cell piece is relieved to reduce the deformationdifference caused by different thermal expansion coefficients among different materials, and therefore the probability of hidden cracking and insufficient welding of the end portion of the main gateelectrode can be effectively reduced.

The invention provides a building structure deformation coordination control system based on chain type hydraulic conduction. The building structure deformation coordination control system is characterized in that two oil cylinders are arranged in a single oil damper, two pistons are correspondingly arranged, inlets and outlets are respectively formed in both sides of the pistons in the oil cylinders, the two oil cylinders of two adjacent oil dampers reversely communicate with each other through sleeves, the whole system is formed by connecting in series, and an inlet and an outlet of one oil cylinder of each of the head floor and the tail floor communicate with each other through a self-circulation pipe or a sleeve so as to form a closed-loop system. The building structure deformation coordination control system has the advantage of the clever structure, has the effects of controlling the structure deformation amplitude and controlling the deformation consistency, can prevent deformation from being concentrated on weak parts of a building structure and has an excellent control effect.

The invention relates to a transition slab structure for alleviating settlement mutation of a pavement of a car lane in the field of civil engineering structure construction. In order to solve the technical problem, the basic technical scheme adopted by the invention is as follows: a corbel is arranged on an exterior wall of a basement, one end of a transition slab is articulated and laid on the corbel, the other end of the transition slab is laid on one side of a sleeper slab, the laying length is 1 / 3-1 / 2 of the width of the sleeper slab, plain concrete cushion layers are arranged below the transition slab and the sleeper slab, a roadbed is arranged on the transition slab and the sleeper slab, and a pavement layer is arranged on the roadbed. Due to the measures of the structure construction, the stress is reasonable, the construction is convenient, and safety and comfort in driving on a rigid-flexible transition section of the roadbed can be improved.

The invention belongs to the technical field of PE protective films, and particularly relates to degumming-proof PE protective film glue and a preparation method thereof. The degumming-proof PE protective film glue comprises the following components in parts by weight: 60-70 parts of propyl acrylate, 15-30 parts of butyl acrylate, 10-20 parts of ethyl methacrylate, 10-20 parts of butyl methacrylate, 1-3 parts of nonylphenol polyoxyethylene ether and 0.5-1 part of octylphenol polyoxyethylene ether. In the preparation process of the glue, glass fiber powder is added, glass fibers are fully blended into pressure-sensitive adhesives in the preparation process, so that the insides of the pressure-sensitive adhesives are pulled towards one another, in an adhesion process, deformation amounts ofa protective film and the pressure-sensitive adhesives can be controlled, deformation difference between the protective film and the pressure-sensitive adhesives can be reduced, thus, internal stressis relieved, the protective film cannot be easily lifted on the surface of the product, moreover, by mixing the propyl acrylate, the butyl acrylate and the ethyl methacrylate, the stiffness and elasticity of a copolymer are improved, the cohesion is increased, and the pressure-sensitive adhesives which are not easy to degum are formed.

The invention discloses a method for reducing hot isostatic pressing deformation of an investment casting turbine blade. The method comprises the following step a of finding the gravity center of the turbine blade by utilizing three-dimensional cartographic software, and adjusting the posture so that the inertia principal axis direction of the turbine blade is parallel with the gravity direction; the step b of designing a tool, so that the shape of a blade root containing cavity is matched with the blade root of the turbine blade adjusted in the step a; and the step c of putting the turbine blade into the tool for hot isostatic pressing, so that the inertia principal axis direction of the turbine blade is always kept parallel with the gravity direction in the hot isostatic pressing process. The invention further provides a tool for reducing the hot isostatic pressing deformation of the investment casting turbine blade, and the tool comprises a tool base which is horizontally arranged, and the tool base is provided with the blade root containing cavity. The shape of the blade root containing cavity is matched with the shape of the blade root when the inertia principal axis direction is parallel with the gravity direction of the turbine blade. By adopting the tool and method for reducing the hot isostatic pressing deformation of the investment casting turbine blade, the deformation risk of the turbine blade is reduced, and the consistency of casting dimensions is improved.

The invention relates to a building floor slab, in particular to an assembled-type tooth-shaped superposed floor slab. Lower-layer longitudinal rebars (5) are wrapped in a baseplate (1), two sectional-type rib strips (2) are arranged on the baseplate (1), and a longitudinal edge of a plate is arranged to be tooth-shaped. A rectangular-tooth superposed floor slab with latches is characterized in that latch grooves (3) are arranged at positions where rectangular teeth (7) are spliced with rectangular tooth grooves (8), the baseplate (1), the sectional-type rib strips (2), the latch grooves (3), bottom-layer longitudinal rebars (5), the rectangular teeth (7), trapezoidal teeth (9), the rectangular tooth grooves (8) and trapezoidal tooth grooves (10) are formed integrally by formwork-erecting pouring, two sectional-type rib strips (2) in staggered arrangement are arranged on each plate, and length of each rib strip is half of that of the corresponding plate. Relative degree of freedom of two plates is limited by means of tooth-shaped meshing, latch restraining, rebar fixing and the like, so that deformation difference among prefabricated slabs is reduced, and the problems of slab staggering, cracking and the like are solved.

The invention relates to the technical field of rail transit, in particular to a precast pile reinforcing structure of a tunnel and a construction method of the precast pile reinforcing structure. The reinforcing structure comprises foundation pit side slopes, precast piles and a concrete cushion layer. The foundation pit side slopes are arranged on the two sides of the tunnel. The multiple prefabricated piles are arranged on the two sides of the tunnel, the multiple prefabricated piles are arranged on the net hanging guniting protective face, and the prefabricated piles are perpendicular to the net hanging guniting protective face. And the concrete cushion layer is arranged above the precast piles. By reinforcing the tunnel and the surrounding soil, differential deformation of the soil on the inner side and the outer side of the open cut foundation pit of the tunnel is eliminated, the influence of the pile end on the tunnel structure is avoided, and then the purpose of settlement control over the newly-built airport runway above the tunnel is achieved.