16results about How to "Increase deflection" patented technology

The utility model discloses a lead-out terminal forming die of an extra-high voltage varistor, which comprises an upper die, a lower die and an opening and closing driving mechanism capable of driving the upper die and the lower die to open and close, a first left guide surface and a first right guide surface are arranged on the lower end surface of the upper die, the first left guide surface gradually inclines upwards from front to back, and the first right guide surface gradually inclines upwards from front to back. The first right guide surface gradually inclines downwards from front to back; the upper end face of the lower die is provided with a second left guide face corresponding to the first left guide face and further provided with a second right guide face corresponding to the first right guide face, the second left guide face gradually inclines upwards from front to back, and the second right guide face gradually inclines downwards from front to back. And during mold closing, a first guide gap which is gradually inclined upwards from front to back is formed between the first left guide surface and the second left guide surface, and a second guide gap which is gradually inclined downwards from front to back is formed between the first right guide surface and the second right guide surface. The leading-out terminal forming die can improve the clamping firmness of the resistor chip.

The utility model relates to the field of rail transit power supply equipment, in particular to a large inertia moment busbar for a railway contact network. The large-inertia-moment busbar for the railway contact network is used for fixing a contact line located above a train pantograph and comprises a busbar body, the busbar body comprises a connecting plate, clamping walls and a partition plate, the two oppositely-arranged clamping walls are fixed to the plate face of one side of the connecting plate, the contact line is jointly clamped by the ends, away from the connecting plate, of the two clamping walls, and the partition plate is arranged between the two clamping walls. A partition plate is fixed between the two clamping walls, and the partition plate, the connecting plate and the two clamping walls jointly define a cavity. And the two sets of inserting plates are arranged, the two sets of inserting plates are limited between the two clamping walls, and the plate faces of the two sets of inserting plates abut against the inner side walls of the two clamping walls correspondingly. At least one contact protrusion is arranged on the inner wall of the clamping wall, and the contact protrusion abuts against the inserting plate at an inclined angle.

The present invention discloses a flexible circuit board containing a transparent cover film and a preparation method thereof, comprising a transparent composite PI substrate and a transparent cover film formed on at least one side of the transparent composite PI substrate; the transparent composite PI substrate comprises a first copper foil layer, a first UV-resistant transparent polyimide layer, a first UV-resistant transparent adhesive layer and a second copper foil layer from top to bottom; the transparent cover film comprises a second UV-resistant transparent adhesive layer and a second UV-resistant transparent polyimide layer; the glass transition temperature of the first UV-resistant transparent polyimide layer and the glass transition temperature of the second UV-resistant transparent polyimide layer are both greater than 320°C. The circuit board of the present invention has extremely high transmittance, extremely low haze, resistance to QUV irradiation, high Tg, high deflection, low rebound force, voltage resistance and low CTE.

The present invention discloses a titanium alloy and aramid lightweight composite protective plate, comprising alternately distributed titanium alloy plates and aramid plates, wherein the total number of layers of the titanium alloy plates and aramid plates is 3 to 7 layers, and the outermost layer of the protective plate is a titanium alloy plate. In addition, the present invention also provides a method for preparing the titanium alloy and aramid lightweight composite protective plate, wherein the titanium alloy plates and aramid plates are coated with an adhesive and then stacked, and then cured at room temperature and high pressure to obtain a composite protective plate. The present invention adopts a multi-layer composite reinforcement method of titanium alloy and aramid, and by designing the thickness of different materials layer by layer, the advantages of the linear ultra-high strength of the aramid material and the high specific strength of the titanium alloy material are maximized in the ability to resist projectile penetration, and the surface density of the protective plate is greatly reduced.

Disclosed is a spinning-drawing-winding device for industrial polylactic-acid fiber, including a double-surface oiling mechanism (11), a filament shearing-suctioning device (12), a pre-interlacer (13) and a splitting filament roller (14) disposed in sequence according to a production process; a drawing-winding device (200) cooperates with a spinning device(100), a tow passing from the spinning device (100) through the double-surface oiling mechanism (11), the filament shearing-suctioning device(12), and the pre-interlacer (13) in sequence until the tow is conveyed to the splitting filament roller (14); the drawing-winding device (200) and the spinning device (100) are configured as a parallel configuration, so that the tow between the spinning device (100) and the splitting filament roller (14) are arranged in a vertical direction and is tangential to the splitting filament roller (14), and therefore the tow is without deflection, thereby avoiding damaging the tow due to a friction caused by a higher deflection.

The utility model relates to the technical field of forming processing, and discloses a positioning device for a forming core rod, a positioning mechanism is used for mounting and supporting a workpiece forming core rod, and the positioning mechanism comprises a driving cylinder, a core rod connecting block, a rear end positioning block, a forming pedestal and a front end guide seat, the core rod connecting block arranged at the push rod end of the driving air cylinder is used for being connected with the workpiece forming core rod in an embedded mode through notch embedding, the driving air cylinder and the workpiece forming core rod are in flexible connection, after installation, the workpiece forming core rod and the driving air cylinder have a certain adjustment amount, and the driving air cylinder only provides driving force for front-back movement in the working process; the front-end guide seat and the rear-end positioning block are respectively arranged at the front end and the rear end of the workpiece forming core rod, so that the workpiece forming core rod is ensured not to deflect through supporting and guiding of the front-end guide seat and the rear-end positioning block, the later-stage adjustment is relatively convenient even if deflection occurs, and the working reliability of the workpiece forming core rod is greatly improved; and the forming quality of a product workpiece is improved.

The present disclosure provides a rotor lock prevention system for an electric vehicle and related methods. Rotor lock prevention systems and related methods are disclosed. An example apparatus includes an electric motor having an output shaft; a drive axle for driving one or more wheels of the vehicle; a torque converter for operatively coupling the output shaft of the electric motor and the drive shaft; and a clutch movable between an open position and a closed position. The clutch fluidly couples the output shaft and the drive shaft of the electric motor when the clutch is in the open position. When the clutch is in the closed position, the clutch enables the electric motor to bypass the torque converter to mechanically couple the output shaft and the drive shaft of the electric motor.

The invention discloses a middle avoiding servo deflection compensation pressing die structure which comprises a dovetail die holder fixed to the lower connecting face of a pressing beam, and a dovetail face is arranged on the lower portion of the dovetail die holder; the middle avoiding telescopic die comprises a middle die body, a middle die foot, a left expanding and shrinking die and a right expanding and shrinking die, and the rotary sheet die comprises a left sheet die and a right sheet die and is mounted on the dovetail surface of the dovetail die holder; the section mold comprises a plurality of section mold units, an inner section mold and a middle mold foot lifting driving device, the middle mold foot lifting driving device comprises a fixing seat, the fixing seat is connected to the top of the pressing beam, and the fixing seat and auxiliary parts of the fixing seat are arranged on the inner side of the pressing beam; the clutch type brace device is located in an inner groove of the dovetail die holder, the rear side sheet die clamping device is installed on a pressing beam on the side face of the rotary type sheet die, a servo-driven pressing foot structure is adopted, the inward shrinkage avoiding function is achieved, the middle pressing foot pressurizing function is achieved, bending deformation of the pressing beam and a pressing die is optimized, and the pressing effect of the rotary type sheet die is improved. And the overall-length compression stress distribution uniformity is improved.

The invention provides an air cycle machine which comprises a rotating shaft and further comprises a force measuring ring, the force measuring ring is used for detecting the axial force of the rotating shaft, the radial outer side of the rotating shaft is sleeved with the force measuring ring, the force measuring ring comprises a ring body, and the two end faces of the ring body are each provided with a plurality of bosses arranged at intervals in the circumferential direction of the ring body; strain gauges are arranged at the connecting positions of at least part of the bosses and the ring body and are projected on any radial plane of the ring body, the bosses are arranged at intervals in the circumferential direction of the ring body, and the bosses on one end face of the ring body and the bosses on the other end face of the ring body are alternated. According to the invention, the bearing wear phenomenon caused by overlarge axial force can be effectively prevented; the multiple bosses are alternately arranged on the two end faces of the ring body respectively, deformation of the proving ring can be achieved through a simple structure when axial force is applied to the proving ring, then the purpose of real-time detection of the axial force is achieved, the proving ring with the simple design is more beneficial to machining, the machining cost can be remarkably reduced, and the machining difficulty can be lowered.

The utility model provides a water turbine stator roundness measuring frame refitted support platform, which comprises a central platform and a plurality of support arms, the central platform is connected with the support arms through a lengthening section, the lengthening section comprises a top plate and a bottom plate, the top plate and the bottom plate are connected through a web plate, side plates are arranged at two ends of the top plate and the bottom plate, and the web plate and the side plates are vertically arranged. A plurality of bolt holes are formed in the side plates, and the connecting plates at the connecting end of the center platform and the end lug plates at the ends of the supporting arms are connected with the side plates through bolts. According to the supporting platform, an existing cross-shaped steel platform is modified, and the applicability is improved.

A photovoltaic tracking system with special cross section and eccentricity overcoming device, the main beam cross section is a rounded square tubular structure; the eccentricity overcoming device is installed between the common column and the main beam of the photovoltaic tracking system, and comprises a mechanism support, a mechanism body and a mechanism fixing seat which cooperate with each other; the mechanism support is fixed on the main beam, and the mechanism fixing seat is fixed below the common column of the photovoltaic tracking system; the mechanism body comprises a hydraulic cylinder and a cylinder barrel which cooperate with each other, the upper end of the cylinder barrel is hinged on the mechanism support and moves under the drive of the mechanism support on the main beam, the tail end of the hydraulic cylinder is hinged on the mechanism fixing seat and forms relative movement with the cylinder barrel, the limiting structure of the cylinder barrel and the two springs act on the springs respectively to compress the springs and generate a thrust on the mechanism support to overcome the gravity eccentricity of the rotation of the photovoltaic tracking system, the torsional performance of the main beam is improved and the torsional deflection is reduced, the damping effect is achieved, and the rotation eccentricity of the photovoltaic tracking is overcome.

The present invention discloses a crankshaft, which is divided into an upper crankshaft including a first rotating shaft and a lower crankshaft including a second rotating shaft and an eccentric part; one end of the upper crankshaft connected to an external motor protrudes in all directions along the axis direction to form a thrust portion. The crankshaft protrudes outward to form a thrust portion, which increases the thrust area, reduces the contact pressure, and improves the wear resistance of the wear surface. The present invention also provides a compressor having the crankshaft.

This invention discloses a construction method for a pipeline installation lifting gantry device suitable for confined spaces. The pipeline installation is completed through steps including modular gantry assembly, pipeline traction or coordinated transport, synchronous lifting and lateral positioning, segmented acceptance, and hydrostatic testing. Laterally movable pulley assemblies are installed on the upper and lower parts of the gantry, working in conjunction with a self-locking lifting mechanism to achieve synchronous lateral movement and alignment of the pipeline while it is being lifted, allowing the pipeline to quickly align with the bracket and be secured. This method reduces reliance on large hoisting equipment in confined environments such as culverts and pipe galleries, minimizing manual handling and repeated lifting and lowering, and improving installation efficiency and alignment accuracy. Simultaneously, measures such as travel limiters, segmented inspection stops, diagonal bracing for stability, and base leveling enhance operational safety and overall stability, and reduce the risk of collision and wear on the pipeline's external anti-corrosion layer.

A composite material supporting structure applied to a flexible display device comprises a first material layer, two second material layers and two third material layers. The first material layer is composed of first fiber bundles. The fiber direction of the first fiber bundle is a first direction. The two second material layers are located on the two sides of the first material layer respectively. The second material layer is composed of second fiber bundles. The fiber direction of the second fiber bundle is a second direction. The second direction is perpendicular to the first direction. The two third material layers are located on the two second material layers respectively. The third material layer has a first region material layer and a second region material layer. The composite material supporting structure meets the requirement that a is larger than or equal to pir and smaller than or equal to 2pir in the bent state. R is the bending radius of the composite material supporting structure in the bending state. A is the distance between the first area material layer and the second area material layer when the composite material supporting structure is in a non-bending state.

A concrete sprayer scraper for tunnel construction relates to the technical field of tunnel construction equipment, and is characterized in that a scraper is mounted at a positioning end of a mounting mechanism, two connecting plates are arranged on one side, close to the mounting mechanism, of the scraper, and the scraper is connected with the positioning end of the mounting mechanism through the connecting plates; one end of the first sleeve is connected with a second sleeve through a buffer spring, the two sides of the second sleeve are fixedly connected with connecting rods correspondingly, and one end of each connecting rod is fixedly connected with a connecting ring; according to the concrete spray head scraper blade for tunnel construction, the concrete spray head scraper blade for tunnel construction is installed on a concrete spray head through the installation mechanism, the deflection of the spray head can be increased through a buffer spring on the installation mechanism, other parts on the spray head are prevented from being damaged by misoperation, and meanwhile the scraper blade is convenient to use. And the scraping plate can properly rotate according to the bulging condition, so that the bulging position of the concrete can be conveniently scraped.

The utility model discloses a probe card and a testing device, and belongs to the field of crimping testing. The probe card comprises a substrate, a fixing piece and a PCB which are sequentially arranged in the first direction. The first surface of the substrate is provided with a plurality of MEMS cantilever needles which are arranged at intervals, the MEMS cantilever needles protrude out of the substrate in the first direction, the fixing part comprises a connecting plate and a boss, the second surface of the substrate is fixed on the boss, the boss is inserted into the connecting plate and is elastically connected with the connecting plate so as to provide deflection for the MEMS cantilever needles, and the MEMS cantilever needles are arranged on the substrate in the first direction. The connecting plate is fixed on the first surface of the PCB in parallel, the PCB is provided with an avoiding hole for accommodating the boss, and the PCB is connected with the MEMS cantilever needles through the FPC. According to the probe card provided by the embodiment of the utility model, not only can a product be tested through the MEMS cantilever needle, but also the deflection of the MEMS cantilever needle can be increased, so that the requirement of unevenness of the surface of the product during crimping contact is met.