89results about How to "Guaranteed geometry" patented technology

The invention relates to an in-situ laying method for the turnouts of ballast track dedicated passenger lines, which is characterized in that: a plurality of temporary track panels are laid at the original positions of the turnouts for transitive purposes, and a piece of large mechanical road maintenance equipment is adopted to tamp the track panels to stabilize the ballast bed; then the temporary track panels are removed, a turnout assembling platform is arranged at the original position of the turnout, and the overall assembly and fine adjustment of the turnout are carried out on the turnout assembling platform. Then a piece of synergic hydraulic equipment is used to jack up the assembled turnout as a whole, the operations of charging ballast and tamping are performed after removing the turnout assembling platform, and the turnout should be repaired and maintained regularly while in service. The invention has the advantages of tremendously improving the adjusting precision of the turnout, effectively preventing the turnout from deforming, enabling the positioning of the turnout to be more accurate, and maintaining the integrity of the turnout.

The invention provides a molding die for fiber reinforced resin-based composite vanes. The invention relates to molding die for composite vanes, which aims to solve the problems that the prior composite vane molding die is insufficient in die assembly and too tight to seal die cavities, can not discharge air in a product, can not guarantee the geometrical size of the airfoil surface of a vane and the relative position of a vane handle, and causes that the product is large in porosity or has air holes on surface. A parting surface of an upper die and a lower die is provided with an upper model groove; a parting surface of the lower die and the upper die is provided with a lower model groove; a first positioning pin is arranged in a first positioning pinhole and a third positioning pinhole; a second positioning pin is arranged in a second positioning pinhole and a fourth positioning pinhole; and a gap between the parting surfaces of the upper die and the lower die is configured as a material overflow groove. The material overflow groove can ensure that the upper and lower dies are sufficient in die assembly; die cavities are incompletely sealed; the air in the product can be smoothly discharged; the geometrical size of the airfoil surface of the vane and the relative position of the vane handle are guaranteed; and the product is good in surface quality.

The invention discloses a method for rapidly constructing a light formwork of a reinforced-concrete-cast-in-place circular draining inspection well. The method includes the following construction steps that the inner formwork is installed; reinforcing steel bars of the inspection well are completely bound, and casting of bottom plate concrete is completed; the side boundary of the inner formwork is correctly defined on a concrete bottom plate, holes are drilled in the inner side of the well wall along the side boundary through an electric drill, reinforcing steel bar heads are inserted, and four reinforcing steel bar heads are perpendicularly inserted along the center and used for positioning the position of the inner formwork; the inner formwork is formed by two semicircular light wood formwork bodies, the two semicircular light wood formwork bodies are spliced into a circle on a flat plane, and opposite pulling is carried out with twine tighteners along oppositely-supported positions of the perpendicular abutted seam; after being externally assembled completely, the inner formwork is manually carried and placed into a well chamber and fixed. According to the method, the semicircular light wood formwork bodies are prefabricated and manually carried and installed on site, construction of the draining inspection well is rapid, and the formwork of the reinforced-concrete-cast-in-place circular draining inspection well is formed by splicing steel formwork bodies or narrow-strip wood formwork bodies.

A railway ballast cleaner comprises a vehicle frame. Cabs are arranged at the two ends on the vehicle frame. An excavation bucket wheel 12' is further arranged in the position, between the cabs at thetwo ends, of the vehicle frame 1' from front to back in the operation direction. The position behind the excavation bucket wheel 12' is connected with a mixed ballast conveyor belt 10'. A screening device 7' is arranged on the lower portion at the tail end of the mixed ballast conveyor belt 10'. A ballast separation device 8' and a main dirty soil conveyor belt 5' are arranged below the screeningdevice 7'. A ballast falling hopper 9' is arranged below the ballast separation device 8'. A loading and unloading storage and transportation box 11' is arranged in front of the ballast falling hopper 9'. A rotary dirty soil conveyor belt 4' is arranged on the lower portion behind the main dirty soil conveyor belt 5'. A backfill conveyor belt 17' is arranged below the ballast falling hopper 9'. Arail lifting device 16' is arranged in the position, behind the excavation bucket wheel 12', of the vehicle frame. The vehicle frame 1' is further provided with a power transmission system 6', an electrical control system, a hydraulic control system, a brake system, a pneumatic system and a walking system. The excavation bucket wheel 12' comprises a multi-degree-of-freedom lateral cutting type knife board 15'. The multi-degree-of-freedom lateral cutting type knife board can be adjusted at multiple degrees of freedom in the X direction, the Y direction and the Z direction in the use process according to the construction requirements, and the geometric dimension of a ballast bed section can be guaranteed.

The invention discloses a bimetal liner with a flanged flange and a manufacturing method of the bimetal liner. The bimetal liner with the flanged flange and the manufacturing method of the flanged flange have the advantages that the structure is simple, the process performance is good, the self-lubricating property is excellent, a copper alloy layer of a flange face cannot crack, and the production efficiency is high. The bimetal liner with the flanged flange comprises a shaft-sleeve-shaped bimetal liner, wherein an outer layer of the bimetal liner is made of steel material, and an inside lining of the bimetal liner is a copper alloy layer; and an outward-flanged flange side is arranged at one end of the bimetal liner and is also in a bimetal structure consisting of the steel material and the copper alloy layer. The bimetal liner is characterized in that the copper alloy layer is not arranged at an outer arc face at a bending part between the bimetal liner and the flange side. As the copper alloy layer is not arranged at the bending part, a situation that the copper alloy layer cracks is avoided in a flanging process. According to a flanging die used in the manufacturing method, the outward-flanged flange side is located in a pit of an upper die, and the outer edge of the flange side is limited by the edge of the pit and cannot extend and deform outwards without limit, so that a phenomenon that the copper alloy layer on the flange side cracks is avoided.

The invention discloses a bicycle battery case set comprising a battery case and a pedestal. The pedestal is fixed on a bicycle frame. The battery case is detachably fixed on the pedestal. The battery case comprises an upper cap, a case body, and a lower cap. A power plug and a power switch are arranged on the lower cap. The pedestal comprises an upper housing coupled with the upper cap, a lower housing coupled with the lower cap, and a base plate used for supporting the case body. A lock body is arranged on the upper housing, and a keyhole is arranged on the upper cap at a place corresponding to the lock body. The battery case set is convenient to install and to detach. With the battery case set, various electronic components can be effectively protected.

The invention relates to a method for manufacturing an article made of a composite material consisting of a polymer matrix reinforced by a fibrous structure. The method includes the steps of placing the fibrous structure (10) on a substrate (20) forming a moulding surface, covering the structure with a mating mould (30), and compacting said structure by moving the surface of the mating mould toward the surface of the substrate. The method is characterised in that the substrate (20) includes a cylindrical portion (21) and a wall (22, 23) positioned radially relative to the cylindrical portion (21), and the mating mould includes two portions (31, 32 or 33) which are mobile relative to one another and which are moved toward the axis of the cylindrical portion (21) and towards the radial wall (22, 23) of the substrate (20), respectively. The invention can be used in particular for manufacturing the fan casing of a turbojet engine.

The invention discloses a prefabricated hollow beam slab construction method. The method comprises the steps of 1, formwork making; 2, steel bar machining and installing, wherein the tail ends of plain round steel bars should be made into 180-degree semicircular hooks, the bent straight inner diameter of the hooks is not less than 2 .5 d, and the hook ends should have straight segments with a length not less than 3 d; when the tail ends of ribbed steel bars are made into right-angled hooks, the length of straight segments of the hook ends should not be less than 3 d, and the bent diameter of straight hooks should not be less than 5 d; bent-up steel bars should be bent into smooth curves; fixing bars are arranged on the top plate and the web of a hollow beam slab every 0.8-1.5 m, and the fixing bars are fixedly welded to the plain round steel bars or ribbed steel bars or bent-up steel bars intersecting with the fixing bars; 3, prestressed bar making and installing; 4, tensioning; 5, concrete pouring; 6, prestressed bar loosening. In the prefabricated hollow beam slab construction method, the mode of arranging the fixing bars on the top plate and the web of the hollow beam slab is adopted to solve the problem that inflatable core formworks float.

The invention discloses a pass design method for producing seamless tubes by utilizing a five-rack continuous rolling mill. The pass design method comprises the steps of determining the total diameter reduction rate of a continuous rolling mill set, and distributing diameter reduction rates of all racks; then, sequentially calculating pass parameters of each rack; calculating the diameter of a billet tube at the outlet end of each rack; calculating the distance from the pass axis of a roll at the roll outlet side of the continuous rolling mill to the bottom of a pass groove, the distance from the pass axis of a roll at the roll outlet side to the top of the pass groove and the arc radius of roll passes; calculating the ellipticity of each roll pass, calculating the length of each distribution curve, regulating and controlling the ellipticity of a second rack and a third rack within a 10% range, increasing by 1% every time, and finding out the length of the distribution curve with the smallest ellipticity; changing the position of a contact point, which is in contact with the billet tube, of the roll in a rolling deformation area, changing the position within a +/-15% range, increasing by 1% every time, calculating a group of contact arc length values, and obtaining a minimum value of a contact arc length differential value; calculating a longitudinal-horizontal flowing speed ratio of metal deformation of the billet tube. According to the method disclosed by the invention, the mechanical performance of products can be ensured.

The invention relates to a novel efficient gasifier water wall connecting base cone assembly welding and heat treatment method and a device. A water wall base cone 1 is formed by an annular forge piece 2, abnormal-shaped bend pipes 3, first deformed flat steel, second deformed flat steel and an annular deformed flat steel layer 6. The method includes a first step of enabling pipe ports of at both ends of the thirty-two abnormal-shaped bend pipes are in butt joint with two channels adjacent to the annular forge pipe, and then enabling the first deformed flat steel and the second deformed flat steel to be alternatively welded with the inner sides of the abnormal-shaped bend pipes to form a circular abnormal-shaped surface, a second step of enabling a heat-resisting layer of 3 millimeters in thickness to be subjected to bead weld on the connected circular abnormal-shaped surface, and a third step of sending the welded water wall base cone into a furnace to carry out high-temperature tempering processing. The water wall base cone assembly welding and heat treatment device and the method reduce deformation and bend in the welding process of the water wall base cone, and ensure a geometrical shape after the water wall base cone is welded.

The invention aims to provide a high-efficiency wave spring setting tempering technology which can improve the production efficiency while guaranteeing the geometric dimensions and hardness of springs. The concrete technical scheme is as follows: placing compression-molded wave springs in a mould, compressing the wave springs, locking a combined mould, placing the combined mould in a tempering furnace, preheating the combined mould for 60 min at 380 DEG C, taking out the combined mould, and placing the combined mould on a hydraulic machine to further compress and lock the combined mould; and placing the combined mould in the tempering furnace again to reheat the combined mould to 420 DEG C, performing heat preservation for 90 min, taking the combined mould out of the furnace and cooling the combined mould to room temperature.

The invention provides a molding structure for green sand mold casting. The structure comprises an upper case form and a lower case form, backing sand is placed at the bottom of the lower case form, a built-in casting model is arranged between the upper case form and the lower case form, coated sand covers the periphery of the casting model, and facing sand is arranged on the coated sand which is positioned in the upper case form. The thickness of the coated sand is 3-4mm. The molding structure for green sand mold casting is improved in order to realize quality requirements of products. A common molding structure is used for casting, precision casting effects are realized, and the production cost is lower than the production cost of coated sand casting.

The invention relates to a self-locking type shutter device with high impact resistance, which includes an image sensor support, separation blades, acting arms and driving motors, wherein a photosensitive window is arranged at the middle part of the image sensor support; the separation blades are provided with sliding grooves, and can be rotationally mounted on the image sensor support through separation blade shafts, and the separation blades can completely shield the photosensitive window when closed, and are within the range of the image sensor support when opened normally on two sides of the photosensitive window; the acting arms are rotationally mounted on the image sensor support through rotating shafts, and are provided with convex columns which are arranged at one end of each acting arm respectively, pass through the sliding grooves of the separation blades, and can slide along the sliding grooves; the connection lines between the centers of the rotating shafts of the acting arms and the axes of the convex columns are orthogonally intersected with the groove lines of the sliding grooves of the separation blades, or form included angles slight larger than 90 degrees; and the driving motors are mounted on the image sensor support, and are connected with the acting arms for driving the acting arms. The self-locking type shutter device with high impact resistance has the characteristics of self-locking, high impact resistance, high overload resistance and the like in the normally-open state, and capability of realizing non-uniformity correction or exposure control of an image sensor focal plane in the closed state, so that the opening and closing time can be regulated and controlled conveniently according to requirements, the volume is small and the structure is compact.

The invention relates to modular construction, in particular to an application of modular construction to roll hole construction of a furnace wall of an annealing furnace. The application modular construction to roll hole construction of the furnace wall of the annealing furnace comprises the steps of: 1, analyzing and optimizing a drawing, decomposing the design and installation characteristics of roll holes of the furnace wall, and drawing a part decomposition drawing of structural deployment of various roll holes; 2, off-line processing an insulating layer backer board and a masonry working layer prefabricating module in a factory, and processing the roll holes or pouring prefabricating modules according to the part drawing; and 3, calculating the modulus of the brick courses of the furnace wall on site according to level of the roll holes, setting a level from the masonry furnace wall to the roll holes, and pairing the prefabricating modules. According to the application modular construction to roll hole construction of the furnace wall of the annealing furnace provided by the invention, the masonry quality of the furnace wall can be improved and the online construction period can be shortened, and the purpose of energy conservation and emission reduction can be realized to control environmental pollution.

The invention belongs to the floating bridge field and in particular relates to a concrete floating bridge of a floating wharf. The concrete floating bridge of the floating wharf comprises a main bridge box, an auxiliary bridge box, a connecting rack and a pile type abutment; the main bridge box and the auxiliary bridge box are fixedly lapped on a seafloor pile by use of the connecting rack. The pile type abutment comprises a pile, a pile holder and a bridge box; the pile holder is fixed with the pile and comprises a pile holder main part, a pile holder auxiliary part, a roller and a roller bracket; the roller is fixed on the roller bracket and horizontally fixed on the pile holder. Six faces of the bridge box are all formed by use of reinforced concrete slabs and the reinforced concrete slabs of the bridge box are all coated with a silane anticorrosive material. The concrete floating bridge of the floating wharf is low in cost, high in safety performance, good in wave resistance, good in stability, excellent in durability, high in resistance to freezing and thawing, movable according to requirements and wide in application fields; the concrete floating bridge can be slightly modified into a floating airport for helicopters and a temporary floating wave barrier dam.

The invention relates to a laser filling method and device for a multilayer contour pattern based on contour lines, computer equipment and a storage medium. The method comprises the following steps: performing outer contour inner offset operation on a to-be-filled pattern according to an equidistant offset algorithm to obtain a contour offset pattern; performing grid method environment modeling on the contour offset pattern to obtain a preprocessed grid pattern; performing inner and outer contour discrimination on the grid pattern to obtain a to-be-filled grid; for the to-be-filled grid, constructing a shortest path problem set; and solving the shortest path problem set by using an A* algorithm to obtain an optimal filling path of the to-be-filled grid. By adopting the method, the laser filling efficiency of the pattern can be improved.

The invention discloses a method for efficiently forming hollow bricks through high-pressure microorganism solid soil. The method comprises the following steps that 1, a material needed by a die is prepared; 2, organic glass plate with holes is assembled; 3, a light die is manufactured, and geotechnical cloth is tailored according to the size; 4, two transverse screw rods are disassembled; 5, a PVC pipeline is installed in a rectangular die cavity; 6, sandy soil is added to a cavity defined by the geotechnical cloth, and a geotechnical cloth top cover is sewn; 7, by means of the two transversescrew rods, the distance between two longitudinal side plates is fixed; 8, prepared bacteria are poured into a test piece, and then the whole die is placed in a chemical solution, and located under the pressure of two standard atmospheric pressures; and 9, after reacting is carried out for 3 days, biology solid soil hollow bricks are formed. Compared with traditional hollow bricks, the hollow bricks formed efficiently through the high-pressure microorganism solid soil does not need to be inserted and formed at a high temperature, air pollution is reduced, the environment is protected, and themethod is an ecological environment-friendly method.