23results about How to "Avoid deformation stress" patented technology

A loader frame articulation structure, belonging to the field of engineering machinery, includes a front frame and a rear frame, connected by an articulation assembly. The articulation assembly includes an articulation shaft, which is fixedly mounted on the front frame, and the rear frame is rotatably connected to the articulation shaft. The articulation shaft includes a cylindrical portion and a truncated cone portion. The truncated cone portion is fixedly mounted on the upper end of the cylindrical portion and installed within an articulation hole in the front frame. A mounting plate is mounted on the upper end of the truncated cone portion, and the mounting plate is fixedly connected to the front frame by bolts. The cylindrical portion is rotatably connected to the rear frame, and the lower end of the cylindrical portion is connected to the articulation hole on the front frame via a bushing. The use of a conical surface fit at the loader's articulation structure significantly improves the assembly accuracy and connection strength at the articulation point, thereby solving the connection strength problem at the articulation point under extreme working conditions and the fatigue wear problem caused by the increasing use time of the loader, effectively reducing the failure rate of the loader product.

The invention discloses a novel hinge expansion joint for high-temperature flue of flue gas turbine, comprising: end pipe I, end pipe II, bellows, load-bearing frame I, load-bearing frame II, two sets of hinge mechanisms and eight sets of supporting components; end pipe I, bellows and end pipe II are connected in sequence; load-bearing frame I is located at the side of end pipe I and supports end pipe I through four sets of supporting components; load-bearing frame II is located at the side of end pipe II and supports end pipe II through another four sets of supporting components; two sets of hinge mechanisms are installed between load-bearing frame I and load-bearing frame II. The invention ensures the long-term operation of the expansion joint under high-temperature working conditions and improves the service life of the product.

The invention provides a gas engine moving ring laser layered engraving and milling precision machining method which comprises the following steps: S1, drawing an oil film groove graph by CAD (computer aided design), storing the oil film groove graph to a specified position after drawing, and transmitting a graph file into a machining equipment panel; s2, preparation before test piece installation: fixing a test piece moving ring on an equipment platform, and operating a software operating system; s3, importing the graphic file into a software operating system, performing multiple groups of tests, determining main process parameters, and formulating a process scheme; s4, the platform is cleaned, and formal parts are replaced; s5, program technological parameters are set, a motor is reset, formal machining is prepared to be started, a red light preview function is started, and observation is conducted before machining; s6, equipment is operated to start first-time machining of the formal part, and the middle process is detected; and S7, the formal part is machined for the second time, and final inspection is completed. A traditional machining mode is innovated, the traditional manufacturing dilemma is broken through, and a new breakthrough of precision machining is completed.

The utility model discloses an inductance automatic tin soldering machine and inductance production line relates to inductance production technical field, this inductance automatic tin soldering machine includes machine table, vibrating disk, tin soldering mechanism and transfer mechanism, and machine table has the feeding station, tin soldering station and the discharging station, and vibrating disk is located in machine table and is located in the feeding station, and tin soldering mechanism includes seat and heating element, and seat is located in machine table and is located in tin soldering station, and the first groove and the second groove of interval arrangement are seted up to one side of seat back to machine table, and the first groove and the second groove are filled with tin liquid and coolant respectively, and heating element is set up around the first groove, and transfer mechanism includes multi -axis mechanical arm and snatchs structure, and multi -axis mechanical arm is located in machine table, and snatchs structure is located in the end of multi -axis mechanical arm, is used for snatching inductance work piece, and multi -axis mechanical arm is used for driving snatchs structure circulation between feeding station, tin soldering station and discharging station. The utility model aims at improving the consistency and production efficiency of inductance product.

The present invention discloses a concrete prestressed steel bar tensioning device and method, belonging to the technical field of concrete engineering, comprising anchor pads symmetrically distributed on both sides of a concrete column, an anchor plate fixed at the middle of the anchor pad, a plurality of anchor holes distributed on the anchor plate, clips arranged in the anchor holes, each steel bar correspondingly inserted in the clips; a tensioning unit is arranged cocentrically outside the anchor pad, a fixing plate is fixed on one side of the tensioning unit; a fine-tuning anchor plate is installed at the tensioning telescopic end of the tensioning unit, the fine-tuning anchor plate is used to clamp and fix the end of the steel bar, and pre-tensioning and fine-tuning each steel bar before tensioning, so that each steel bar in the tensioning unit maintains a uniform tensioning stress before the tensioning process is carried out; the present invention can avoid plastic deformation and stress concentration of the steel bar caused by continuous loading during the tensioning process, protect the steel bar from excessive damage, and extend its service life.

The utility model relates to waterproof coiled material one-time forming equipment, belongs to the technical field of high polymer material processing, and particularly relates to HDPE high polymer waterproof coiled material one-time forming equipment which comprises extrusion equipment, a conveying table and a cooling table and is further provided with an alternate composite cooling mechanism, a lifting platform, a cutting device, a winding device and a coiled material conveying path. The alternate composite cooling mechanism realizes composite cooling of the coiled material through alternate arrangement of a water cooling tank and an air cooling tank; the lifting platform is matched with the cutting and winding device to realize double-layer layout and convenient maintenance of the equipment; the roller assembly and the guide roller component guarantee smooth transmission of the coiled material. According to the high-density polyethylene waterproof roll cooling device, the effects of improving the roll cooling quality, improving the space utilization rate of a plant and optimizing the production process are achieved, and the problems that an existing high-density polyethylene waterproof roll production device is poor in cooling effect, large in occupied space and not smooth in production process are solved.

The present invention discloses a welding deformation control device for a railway freight car corner column. It comprises a workbench, a middle flip positioning mechanism is arranged in the middle of the workbench, and a group of end flip positioning mechanisms and a group of oil cylinder clamping mechanisms are respectively arranged at both ends of the workbench; the middle flip positioning mechanism and the two groups of end flip positioning mechanisms have the same flip positioning components, and each flip positioning component is connected by a flip horizontal base plate arranged along the length direction of the workbench; the flip positioning components are arranged on the flip horizontal base plate through a deflection insert, and a plurality of groups of spring-type transport rollers are arranged at intervals on the flip horizontal base plate. The device of the present invention can pre-fabricate the deflection and anti-deformation of the welding component in advance, and offset the deformation stress of the component itself during the welding process; the provision of the flip device, the deflection insert and the spring-type conveying roller can reduce the labor intensity in the conveying and automatically pre-fabricate the deflection and anti-deformation, and each system fusion group is combined into an integrated structure on the workbench, thereby improving the work efficiency.

The present invention discloses a fully enclosed roto-molding machine and method for polymer material molding, which relates to the technical field of roto-molding machines, including a transmission mechanism, a rotating rod is arranged inside the transmission mechanism, a driving mechanism is arranged at one end of the rotating rod, a heat collecting mechanism for focusing heat energy is arranged at both upper and lower ends of the driving mechanism, a mold shell is arranged inside the heat collecting mechanism, and a pressurizing mechanism extending to the inside of the mold shell and increasing the internal air pressure is arranged on the outer surface of the heat collecting mechanism. The high-pressure gas discharged by the pressurizing mechanism provided in the present invention can effectively reduce bubbles in the plastic solution, improve the density and surface quality of the product, and the reduction of bubbles means that the structure of the product is more uniform, reducing potential defects, and the high-pressure gas can evenly squeeze the plastic solution onto the inner wall of the mold shell, especially in some corners and parts with complex shapes, ensuring that the shape of the product is clear and without defects.

The invention discloses a fully-closed rotational molding machine and method for high polymer material forming processing, and relates to the technical field of rotational molding machines. The fully-closed rotational molding machine comprises a transmission mechanism, a rotating rod is arranged in the transmission mechanism, and a driving mechanism is arranged at one end of the rotating rod; the upper end and the lower end of the driving mechanism are each provided with a heat gathering mechanism used for focusing heat energy, a mold shell is arranged in each heat gathering mechanism, and the outer surface of each heat gathering mechanism is provided with a pressurizing mechanism which extends into the corresponding mold shell and increases the internal air pressure of the corresponding mold shell. High-pressure gas discharged by the pressurizing mechanism can effectively reduce bubbles in a plastic solution, the density and the surface quality of a product are improved, reduction of the bubbles means that the structure of the product is more uniform, potential defects are reduced, the plastic solution can be uniformly extruded to the inner wall of a mold shell through the high-pressure gas, and the product quality is improved. Especially for some corners and parts with complex shapes, the product is ensured to be clear in shape and free of defects.

The present application belongs to the technical field of cable bridge, and discloses a kind of spanning river valley cable bridge structure, including bridge main body, the upper end side wall of bridge main body is fixed with multiple obliquely arranged pull steel cable, the lower end of pull steel cable is fixed with anchoring base, two horizontally arranged main cables are connected on bridge main body, guide wheel for guiding main cable is fixed on bridge main body, further including four groups of temperature follow-up tension adjusting assembly, four groups of limiting locking assembly, four groups of locking force synchronous control assembly and multiple groups of knocking impurity removal assembly.The present application can automatically compensate the length of main cable according to ambient temperature, synchronously realize the linkage unlocking and resetting of locking mechanism, and also can automatically remove the impurities of cable body with the help of wind power, effectively solve the problems of unstable main cable tension, blocked adjustment and overload of impurity accumulation of spanning river bridge in tropical monsoon mountainous area, with high overall automation degree, energy saving and environmental protection, and suitable for remote unattended working conditions.

The utility model discloses a shock absorption lubrication valve stem, it includes valve stem body, and the contraction portion is equipped with in valve stem body middle section, and the contraction portion is equipped with the shock absorption lubrication subassembly that is composed of the upper circular platform and lower circular platform of the upper and lower interval arrangement on the sleeve. The through hole of the interference fit with the contraction portion is set up in the center of upper and lower circular platform, and the first spiral oil storage groove filled with the lubricating grease and the second spiral oil storage groove are respectively screwed on the conical side surface. The big bottom surface of upper and lower circular platform is opposite, and the first arc convex and the second arc convex that are staggered distribution are respectively equipped on it. The utility model discloses through spiral oil storage groove realizes self -lubricating, through arc convex and circular platform combination form multiple shock absorption heat preservation air gap, and through the friction reducing convex point reduces the contact area, and the wear resistance, the impact resistance and the sealing member anti -icing effect of valve stem are comprehensively promoted, especially suitable for the low temperature working condition of limited space.

The invention provides a method for improving the quality of a perovskite thin film for a solar cell, the perovskite solar cell and a preparation method, and the method for improving the quality of the perovskite thin film for the solar cell comprises the following steps: preparing a perovskite precursor solution; carrying out irradiation nucleation treatment on the prepared perovskite precursor solution by adopting laser; coating a substrate with the perovskite precursor solution subjected to irradiation nucleation treatment to obtain a perovskite thin film; the method has the beneficial effects that the uniformity, the crystallization quality and the photoelectric property of the prepared perovskite thin film can be improved; the method is suitable for the technical field of perovskite solar cells.

The invention belongs to the field of high-performance materials, and provides a high-performance metal layered composite material and a preparation method thereof. The preparation method comprises the steps that the dissimilar plates and the hydrogenated pre-alloyed powder are placed in a multi-layer overlapping mode, and then the high-performance metal layered composite material is obtained after compression molding, heat preservation and cyclic stepped heat treatment. The compatibility, contact force and toughness of an interface area and intermetallic compound layers with different components are improved, the content of the interface area and the intermetallic compound layers is regulated and controlled, preparation of the small-size and large-size dissimilar material high-performance low-cost metal layered composite material can be achieved, the strength, plasticity and toughness of the composite material are synchronously improved, and the composite material is suitable for large-scale production. The method is suitable for industrial production.

The invention discloses a glass wine bottle outer surface polishing device which comprises a first movable polishing device, a polishing clamping device is arranged at one side end of the first movable polishing device, a second movable polishing device is arranged at one side end of the polishing clamping device, and the first movable polishing device comprises a transverse moving device. A base is arranged in the middle of the upper end of the transverse moving device, a belt connection grinding arm is arranged at the upper end of the base, a first supporting frame is arranged at the lower end of the belt connection grinding arm, a first rotating motor is fixedly connected to the upper end of the first supporting frame, a first rotating wheel is arranged at the output end of the first rotating motor, and a grinding belt is arranged on the first rotating wheel. The glass bottle polishing device has the beneficial effects that through accurate coordination operation of a plurality of motors and a hydraulic system, accurate control over the polishing angle, position and polishing force of the glass bottle can be achieved, and the design of the bottle clamping device and the rotary clamping device allows the device to adapt to glass bottles of different shapes and sizes.

The invention discloses a concrete prestressed reinforcement tensioning device and method, and belongs to the technical field of concrete engineering.The concrete prestressed reinforcement tensioning device comprises anchor bearing plates which are symmetrically distributed on the two sides of a concrete column, an anchor plate is fixed to the middle of each anchor bearing plate, a plurality of anchor holes are distributed in each anchor plate, and clamping pieces are arranged in the anchor holes; each steel bar is correspondingly arranged in the corresponding clamping piece in a penetrating manner; a tensioning unit is concentrically arranged outside the anchor bearing plate, and a fixing disc is fixed to one side of the tensioning unit. A fine adjustment anchor disc is mounted at the tensioning telescopic end of the tensioning unit, and the fine adjustment anchor disc is used for clamping and fixing the ends of the steel bars and performing pre-tensioning fine adjustment on each steel bar before tensioning, so that each steel bar in the tensioning unit keeps uniform tensioning stress before the tensioning process is performed; plastic deformation and stress concentration caused by continuous loading of the reinforcing steel bars can be avoided in the tensioning process, the reinforcing steel bars are protected against excessive damage, and the service life of the reinforcing steel bars is prolonged.

The invention relates to the technical field of rail transit, in particular to a composite sandwich structure forming process and a sandwich structure. The forming process comprises the steps of part forming, wherein a plurality of profiles are sequentially spliced end to end to form an annular framework, and the annular framework is provided with a hollow cavity; the skin and the filler are cut, so that the skin and the filler are matched with the annular framework in size; composite molding: coating one side surface of the skin and two side surfaces of the framework with resin; the filler is put into the hollow cavity of the framework, then the skin fully coated with the resin is attached to the framework, the framework is turned over, the skin on the other side is attached to the framework, and a sandwich structure is formed; and the compounded sandwich structure is pressurized, the pressure is relieved after pressurization is conducted for preset time, and preparation of the sandwich structure is completed. By means of the method, the first-pass yield of the large-size composite material part is increased, and follow-up working hours such as repairing, shaping and polishing are reduced.

The utility model relates to a kind of wind turbine blade cover plate safety fixing device, including fixed plate and bolt welded and fixed on fixed plate, the fixed plate is located in fan blade, the bolt is sequentially threaded through the manhole around the end of fan blade and the bolt hole corresponding one-to-one on blade cover plate after being fixed by nut, the utility model sequentially threads the bolt in fan blade through the manhole around the end of fan blade and the bolt hole corresponding one-to-one on blade cover plate after being fixed by nut on fixed plate, so that the manhole around the end of fan blade does not need to be embedded bolt also can realize the safety fixation between blade cover plate, can effectively solve the safety fixation problem of blade cover plate after embedded bolt relaxation or drop.

The invention discloses a flame burr removing device for a front guard lamp shell. The flame burr removing device comprises a rack, a workpiece positioning seat arranged on the rack, a floating pressing assembly matched with the workpiece positioning seat, a rotary driving assembly used for driving the workpiece positioning seat to move and a linear feeding assembly. A flame generating assembly is arranged on one side of the rack, and the output end of the flame generating assembly is connected with a flame range limiting flow guide cover which is used for restraining flames and acting the flames on a burr area of the lamp shell in a directional mode. A heat insulation protection assembly is arranged at the position, corresponding to the non-burr-removal portion of the lamp shell, of the flame action area. A waste gas suction assembly is arranged below or on the rear side of the flame action area, and a cooling airflow assembly is arranged at the position adjacent to the waste gas suction assembly. According to the lamp shell edge burr removing device, through cooperation of rotary motion and linear feeding motion, burrs on the edge of a lamp shell continuously and evenly enter a flame-limited area to be subjected to hot melting removal, heat insulation protection, waste gas suction and cooling treatment are achieved in the burr removing process, and therefore the consistency and stability of burr removing machining are improved.

A backlight module (20) and a display device (10) are disclosed. The backlight module (20) includes an assembled light plate (200) composed of multiple light plates (210) assembled together. There is a gap (250) between every two adjacent light plates (210). The backlight module (20) further includes a light supplementation structure (220) covering the gap (250) and having a fixed end fixedly connected with one of the two adjacent light plates (210), and a free end located on the other one of the two adjacent light plates (210).

This utility model discloses a tooling for winding rebar cages for utility poles, relating to the field of tooling technology. The utility model includes a frame, with a mandrel mounted on the top of the frame; a guide assembly is also mounted on the top of the frame, comprising a guide rail fixedly connected to the top of the frame, a gear movably connected to one side of the guide rail, and a chain meshing with the surface of the gear. By providing a guide assembly that can move along the guide rail, this utility model allows the rebar feed reel to move synchronously with the winding process, effectively reducing stress concentration in the rebar during winding. The dynamic feeding method avoids the problem of excessive rebar stretching caused by traditional fixed feeding, preventing plastic deformation and residual stress, significantly improving the overall strength and durability of the rebar cage. A drive motor drives the guide frame to move at a uniform speed through a gear and chain mechanism, combined with the mandrel rotation controlled by a servo motor, achieving uniform winding of the rebar.

The utility model provides a fixing device for welding of a clutch pedal assembly, which relates to the technical field of welding and fixing and comprises an operating platform, a fixing and adjusting mechanism is arranged at the top of the operating platform, a cooling mechanism is arranged on the outer surface of the operating platform, and the fixing and adjusting mechanism comprises a first motor. The output end of the first motor slidably penetrates through the outer surface of the operation table and extends to one side, the output end of the first motor is fixedly connected with a first threaded lead screw, the outer surface of the first threaded lead screw is in threaded connection with a first movable block, and a first sliding groove is formed in the position, close to the center, of the top of the operation table. The welding position can be flexibly adjusted, the limitation that a welding gun only conducts welding on a single position is effectively avoided, the trouble that the position of the welding gun is frequently adjusted when the welding position needs to be replaced is avoided, the design mechanism is simple, the applicability is improved, and the working efficiency is improved.

The application provides a method for connecting titanium aluminum carbide and niobium by adopting a titanium intermediate layer and a connected joint, and relates to the technical field of welding. The method comprises the following steps: S1, preparing a component to be connected; the component to be connected is formed by sequentially stacking titanium aluminum carbide base material, an intermediate layer and niobium base material from top to bottom, and the material of the intermediate layer is titanium; S2, performing discharge plasma sintering on the component to be connected under a preset air pressure to obtain a connected joint. By adopting the method, the cracking of the joint can be inhibited, the decarburization or Al evaporation of Ti3AlC2 at high temperature can be inhibited, thereby the deterioration of the base material is inhibited; the generation of brittle intermetallic compounds can be avoided, which is helpful to improve the interface bonding strength, thereby the strength of the connected joint is improved.

The utility model discloses a limiting device for tweezers, which comprises a U-shaped main body, a screw and a connecting rope, and the U-shaped main body is provided with a rope hole, a screw hole and a contact surface; the rope hole is located in the side face of the U-shaped body, the screw hole is located in the upper side of the U-shaped body, and the contact face is located on the inner wall of the lower side of the U-shaped body. The connecting rope penetrates through the rope hole and is attached to the contact surface and the tweezers; and the screw penetrates through the screw hole and is connected with the U-shaped main body, so that the connecting rope is fixed between the contact surface and the screw. The effects of achieving rapid and accurate opening limiting and adapting to tweezers of different specifications are achieved.