16results about How to "Prevent deformation and cracking" patented technology

The application discloses a die-casting device for window sliding wheel machining, which comprises an operating machine table arranged on the ground, a die-casting base fixedly arranged at the middle of the bottom of the inner cavity of the operating machine table, and a limiting guide rod fixedly arranged at the top of each corner of the die-casting base, and belongs to the technical field of die-casting. The die-casting device for window sliding wheel machining is characterized in that the upper die, the hydraulic rod, the lower die mechanism and the electric telescopic rod are matched to realize efficient and stable die-casting. During die-casting, the structures are cooperatively driven to automatically circulate and flow the cooling liquid, the cooling and shaping are rapidly completed, the processing efficiency is effectively improved, the circulating cooling liquid can drive the inside of the lower die mechanism to generate high-frequency oscillation, the internal bubble defects of the casting are eliminated, the product structural strength and surface quality are improved, meanwhile, the cooling liquid is uniformly disturbed in the die to improve the heat exchange efficiency, the temperature of the cavity is rapidly and evenly balanced, the deformation and cracking of the casting are prevented, the forming precision and product qualification rate are ensured, and the overall structure is simple, stable and reliable in operation.

The utility model relates to the technical field of geological sample sampling devices, and discloses a geological stratified sampling device for geological mining, which comprises a movable base provided with a central hole, and a limiting ring rotatably connected in the central hole; the sampling barrel selectively penetrates through the central hole; the telescopic sleeves are sequentially connected in a sliding mode from the outer side to the inner side in the vertical direction, the telescopic sleeve on the outermost side is connected with the inner side wall of the limiting ring in a sliding mode, the inner side wall of the telescopic sleeve on the innermost side is connected with the sampling barrel in a sliding mode, and the sampling barrel can drive the telescopic sleeve on the innermost side to synchronously move downwards. And then the multiple sections of telescopic sleeves from the inner side to the outer side are driven to be sequentially embedded in the drill hole. The sampling barrel can drive the telescopic sleeve on the innermost side to synchronously move downwards, then the multiple sections of telescopic sleeves are driven to be sequentially embedded in a drill hole, collapse of the drill hole is avoided, and layered multi-time sampling of stratums with different depths is achieved.

The utility model discloses an elbow pipe with long service life, which comprises an elbow pipe main body, connecting threaded pipes are fixedly arranged at two ends of the elbow pipe main body, and sealing components are sleeved on the surfaces of the connecting threaded pipes; an outer protection assembly is fixedly arranged on the surface of the bent pipe body. A reinforcing assembly is fixedly arranged at the bent position of the bent pipe body, the surface of the reinforcing assembly is coated with a polyurethane coating, a cavity is formed in the inner wall of the bent pipe body, a reinforcing metal wire is fixedly arranged in the cavity, the sealing assembly comprises a silica gel ring and a rubber ring, and the silica gel ring is connected to the surface of a connecting threaded pipe in a sleeving mode. According to the elbow pipe with the long service life, the outer protection assembly and the reinforcing metal wires are arranged, the reinforcing metal wires are used for improving the tensile property of the elbow pipe body, the extrusion polyethylene layer and the polyurethane layer can protect the outer layer of the elbow pipe body, deformation and fracture caused by the temperature difference between the interior and the exterior of the elbow pipe body are avoided, and the service life of the elbow pipe body is prolonged.

This utility model relates to a high-strength packaging carton in the field of cardboard boxes. It includes an outer shell, with a lid and a bottom plate respectively added to the upper and lower parts of the outer shell. The outer shell, lid, and bottom plate constitute the box body. The box body is made of multi-layer high-strength corrugated cardboard. Nylon fasteners are connected to the lid and outer shell at corresponding locations. The Nylon fasteners consist of a first rough surface and a first hook surface, which are respectively connected to the outer shell and the lid. The outer surface of the outer shell is coated with a waterproof and moisture-proof coating. The outer shell includes a composite reinforcement layer comprising a glass fiber reinforced mesh and a polyester film. The glass fiber reinforced mesh is disposed on the inner wall of the outer shell, and the polyester film is disposed on the outer side of the outer shell. A three-dimensional reinforcing frame is added to all four sides of the inner wall of the outer shell. The three-dimensional reinforcing frame is an overall "well"-shaped honeycomb paper core. The three-dimensional reinforcing frame is bonded to the inner wall of the outer shell using hot melt adhesive.

The utility model discloses a kind of propaganda leaflets with wear-resistant structure, it is related to propaganda leaflet field.The utility model includes leaflet main part, the back side of leaflet main part is rotatably installed with propaganda rotating plate by rotating buckle, a plurality of single information printing plate are provided on the propaganda rotating plate, the surface of leaflet main part is provided with through slot, any single information printing plate is opposite with through slot position, the utility model is connected by rotating buckle with leaflet main part hinged, the rotation switching of information plate is realized instead of traditional folding, avoid structure tear, simultaneously, single information printing plate is protected in the interlayer space formed by leaflet main part and propaganda rotating plate, reduce the wear and tear of printing surface caused by physical contact, first, annular arrangement single information printing plate and through slot linkage, ensure that the rotation process is balanced and stable and simplify operation, simultaneously, information printing surface is designed to the inside of leaflet main part, isolated external pollution, prolong content clarity.

This invention discloses a magnesium-lithium alloy cabin structure component and its forming method, belonging to the field of magnesium-lithium alloy forming technology. The method includes the following steps: S1. Pre-treatment of the magnesium-lithium alloy ingot, followed by free forging or extrusion to obtain a billet; S2. Die forging the billet and air-cooling it to room temperature to obtain a forging; S3. Holding the forging at 270~290℃ for 4~6 hours, then quenching it in cold water and performing T5 heat treatment; finally, aging strengthening by holding it at 180~220℃ for 8~12 hours. The forming method of this invention improves product uniformity through pre-treatment and enhances product strength and toughness through heat treatment. This forming method has broad application prospects and is expected to be industrialized.

The utility model relates to the technical field of battery anode and cathode material production and preparation devices, in particular to a spliced graphite sagger which comprises a frame body and a bottom plate which can be mutually connected to form a cavity, the frame body comprises a plurality of column feet and a plurality of side plates, and the adjacent column feet are connected through the side plates. The spliced graphite sagger is simple in structure, few in core parts and consistent in specification, if the same graphite sagger adopts column feet of the same specification and side plates of the same specification, the production efficiency of the spliced graphite sagger can be greatly improved, meanwhile, splicing is easy, firmness is high, the parts can be directly replaced under the condition that the parts are damaged, and the production cost is reduced. And the maintenance cost can be effectively reduced.

This invention discloses a casting briquetting machine, comprising a base with columns at each of the four corners, a top plate on each column, a hydraulic cylinder on the top plate, the output end of the hydraulic cylinder slidably mounted inside the top plate, a connecting plate on the output end of the hydraulic cylinder, the connecting plate slidably mounted on the columns, and a pressure block at the bottom of the connecting plate. In this invention, the downward pressure of the hydraulic cylinder drives the connecting plate and the pressure block downwards, and through the connection of a compression spring, pushes a buffer plate downwards, causing a moving frame to lower a trapezoidal clamping block. When the moving frame is in contact with the base, the hydraulic cylinder pushes the connecting plate, causing the buffer plate to continue to descend, and driving an inclined guide post to insert into the trapezoidal clamping block, thereby causing several trapezoidal clamping blocks to move closer to each other synchronously, thus forming a rectangular forming groove. The bottom of the forming groove is shielded by the base, and the top of the forming groove is pressed in by the continuously pressing pressure block, thereby achieving the purpose of casting briquetting.

This invention relates to the field of architectural decoration construction technology, specifically a type of HPC panel for exterior decorative styling with a steel truss back. The panel includes an HPC board, connecting components, embedded components, and several truss risers. A steel truss structure, consisting of truss risers and combined beams, is installed on the back of the HPC board via the connecting components and embedded components. This avoids the later construction problems associated with splitting the HPC board into multiple pieces. The embedded components are then connected to the steel truss through a designed structure, improving the stability of the support connection. For example, the segmented arrangement of long angle steel provides stress relief gaps for the HPC board, preventing cracking and deformation. Distributed first short angle steel, long angle steel, second short angle steel, and supporting square tubes improve the multi-point stress support of irregularly shaped HPC boards, enhancing support stability. Furthermore, the assembled steel truss structure, combined with the building's main structure connectors, allows for the installation of various shaped HPC boards in a unified manner with the building structure.

This utility model belongs to the field of metallurgical engineering, specifically a rapid cooling sintering structure, including a machine body. A cooling mechanism is installed inside the machine body, and a transmission frame is fixedly installed inside the machine body. Several first rotating shafts are rotatably connected inside the transmission frame, and a transmission belt is mounted on the surface of the several first rotating shafts. By setting up the cooling mechanism, a high-efficiency heat exchange channel is formed by symmetrically penetrating the sintered ore layer with dual airflows, thereby increasing the cooling intensity. Furthermore, the symmetrical airflow coverage eliminates the temperature gradient caused by unilateral cooling, achieving uniform heat dissipation of the workpiece cross-section and avoiding deformation and cracking caused by thermal stress concentration. By setting up a transmission component, a single power source drives two cooling spiral blades to operate synchronously, while rigid transmission ensures that the speeds of the two fans are completely consistent, improving the uniformity of airflow coverage and eliminating cooling blind spots caused by asynchronous airflow.

The utility model discloses a kind of movable arm crossbeam and loaders in the engineering machinery technical field, wherein the loader includes fuselage, movable arm is equipped on the fuselage, movable arm drives movable arm crossbeam to move.Movable arm crossbeam includes including beam body and support plate.The beam body is long box structure with internal hollow.Multiple support plates are evenly spaced along the length direction of beam body, and positioning hole for beam body is equipped on support plate and support plate is fixedly connected with beam body.When movable arm drives movable arm crossbeam to move, support plate is evenly applied to beam body by positioning hole on external force, so that stress does not overly concentrate in the partial of beam body and cause movable arm crossbeam partial cracking failure.The beam body is complete long box structure, with good anti-deformation ability.Effectively improve the service life of movable arm crossbeam.

The utility model discloses a kind of high-strength pressure-resistant CPVC cable protection pipe, belong to cable protection facility technical field, its technical scheme main points include pipe body, the both ends of the pipe body are respectively provided with flange end and recess end, the flange end and recess end cooperation form socket-and-spigot type connecting structure, the inside of the pipe body is provided with center pressure-bearing column, and the surface of center pressure-bearing column is annularly provided with a plurality of pressure-bearing plate integrated with it, cable placing cavity is formed between adjacent pressure-bearing plate, by the multilayer composite structure of pipe body and inside center pressure-bearing column, pressure-bearing plate form inside and outside collaborative support, greatly improve overall extrusion resistance, can resist underground buried depth pressure or ground heavy object rolling pressure, avoid pipe body deformation rupture, and buffering heat insulation layer absorbs external impact energy through closed-cell bubble, reduce construction collision, stone impact damage to pipe body, and inner wall anticorrosive layer and CPVC outer pipe layer cooperate to resist corrosion and wear, adapt to complex soil environment.

The invention provides a brazing method of a heat exchanger assembly, the heat exchanger assembly comprises a heat exchanger body and a heat exchange tube, and the outer surface of the heat exchanger body is provided with a heat exchange groove. The brazing method comprises the steps that S1, the heat exchange pipe is coiled into the shape matched with the heat exchange groove in advance through a profiling mold; s2, the surfaces of the heat exchange tube and the heat exchanger body are plated with nickel; s3, the heat exchange tubes are embedded into the heat exchange grooves, and the heat exchange tubes are pressed and fixed through pressing blocks with chamfers; s4, the brazing filler metal is applied to the edge of the contact face of the heat exchange pipe and the heat exchange groove in a differentiated mode, and the surface, where the brazing filler metal possibly flows through, of the heat exchanger body is coated with a solder resist; and S5, the heat exchanger assembly is brazed in a stepped heating mode. According to the method, through cooperative implementation of multiple steps such as heat exchange tube preforming, composite nickel plating, precise fixing, differential brazing filler metal applying and stepped temperature rising, tight attachment of the thin-walled tube and the complex curved surface heat exchanger is achieved, the bonding strength and stability of a brazed joint are improved, brazing defects are effectively eliminated, and the product percent of pass is increased.

This utility model relates to the field of duct technology and discloses a composite fiberglass duct for ventilation and air conditioning engineering. It includes a duct assembly with a load-bearing support component fitted onto its surface. The load-bearing support component includes a fixed frame with a groove on its surface and an anti-slip rubber pad on its inner side. The fixed frame is U-shaped and locked to the outer surface of the duct assembly. The groove is located on the two U-shaped sides of the fixed frame. This utility model utilizes the sliding engagement between the U-shaped fixed frame and the groove, allowing the locking bolts to adjust the moving plate longitudinally along the fixed frame, adapting to the installation requirements of ducts with different diameters. The connecting bolt column and the support plate are flexibly adjusted vertically using two sets of locking nuts, eliminating the need for custom brackets and adapting to different installation environments, significantly improving construction efficiency and reducing costs.

The utility model relates to the technical field of soil collection and discloses sampling equipment for geological mineral exploration. The supporting plate is fixedly connected to the lower end of the force application rod; the upper ends of the two arc plates are hinged to the supporting plate, and the supporting plate and the two arc plates can be spliced into a cylindrical structure with a downward opening; the driving mechanism is used for driving the lower ends of the two arc plates to be opened and closed; and the sampling head is detachably connected with the lower ends of the two arc plates. According to the sampling device, the upper ends of the two arc plates are hinged to the supporting plate, the sampling head is annular, the lower ends of the arc plates are detachably connected with the sampling head, and the lower ends of the two arc plates are reinforced through the sampling head, so that the arc plates can be effectively prevented from deforming and cracking inwards or outwards in the sampling process; therefore, the structural stability and durability of the device are remarkably improved.

The utility model discloses a kind of dry quenching coke oven bracket reinforcement mechanism, it is related to dry quenching coke oven technical field.The utility model includes bracket body, bracket body is installed on external support frame, two arc-shaped support plates are installed in the bracket body circumferential surface, two arc-shaped support plates are combined to form support ring and are arranged in the bracket body circumferential surface, bracket body circumferential surface detachably installs steel frame support group, steel frame support group includes two arc-shaped limit plates, two arc-shaped limit plates are combined to form limit ring and are installed in the bracket body circumferential surface, the bottom of arc-shaped limit plate is installed with several oblique reinforcing rods, and oblique reinforcing rod and arc-shaped limit plate are connected by bolt.The utility model is through the assembly type design of arc-shaped support plate, arc-shaped limit plate and arc-shaped positioning plate three-layer ring structure, can be adapted to larger bracket body, and simultaneously through the dynamic adjustment of arc-shaped positioning plate by positioning screw rod, the applicability of support structure is improved.