64results about How to "Extend evenly" patented technology

An extension and retraction arrangement for retaining a supported article, such as a monitor, in relation to a trolley structure that is retained for axial extension and retraction in relation to an elongate support arrangement. A support arm, which can be unitary, articulated, pivoting, or non-pivoting, can be coupled to the trolley structure. The trolley structure can have a centrally disposed alcove disposed inboard of first and second rail members of the elongate support arrangement. A subsurface enclosure can retain the rail members, and first and second doors can selectively close an aperture in a framework coupled adjacent to an end of the subsurface enclosure. Constant force springs can assist travel of the trolley structure and an arcuate braking member or compressing spring can provide a braking effect to the trolley structure

A rolling shutter and a slat for use in a rolling shutter are provided. The slat comprises an engaging track located at a first edge and a receptacle track located at a second edge. Illustratively, the engaging track has a hook-shaped profile and is disposed at an acute angle relative to an adjacent part of the body portion, is disposed at an angle of less than 180° relative to a vertical axis of the slat, or has a hook-shaped profile that curves for more than 180°, and the receptacle track comprises a lip and a guard defining a space adapted to receive therein an engaging track of an adjacent slat.

The invention provides an Nbc nanoparticle reinforced X80 plastic pipe steel plate and a production method of the Nbc nanoparticle reinforced X80 plastic pipe steel plate. The steel plate comprises, by weight percentage, 0.06%-0.12% of C, 0.10%-0.30% of Si, 0.60%-1.40% of Mn, 0.07%-0.15% of Nb, 0.001%-0.004% of N, 0.01%-0.04% of Ti, 0.025%-0.045% of Al, not larger than 0.010% of P, not larger than0.005% of S, not larger than 0.30% of Cu, not larger than 0.30% of Mo, 0.12%-0.30% of Cr, 0.12%-0.30% of Ni and the balance Fe and inevitable impurity elements. The production method comprises the steps of material preparation, converter or electric furnace smelting, secondary refining, casting, slab reheating, controlled rolling and controlled cooling. By the adoption of the produced steel plate, the safety of oil and gas transmission pipelines laid in geological complex areas is ensured, and the purposes of high-pressure transportation of natural gas and oil and the like are met.

The invention relates to a polyvinyl alcohol membrane for the polarizing film, which is used to solve the problem of high-performance PVA film. The composition and weight of shares of the polyvinyl alcohol membrane: 10-30 units of PVA polymer, 5-25 units of plasticizer, 1-5 units of surfactant, 50 - 200 units of solvent. The PVA membrane has a high strength, good extension, which can be widely applied to liquid crystal display (LCD).

The invention discloses strain design based pipe line steel X70 and its manufacturing method. the steel comprises the following ingredients of: by weight, 0.06-0.10% of C, 0.1-0.6% of Si, 1.0-2.5% of Mn, P being less than or equal to 0.015%, S being less than or equal to 0.003%, Cr being less than 0.1%, 0.05-0.35% of Mo, 0.01-0.15% of Nb, 0.005-0.03% of Ti, 0.01-0.06% of Al, one or two components selected from 0-0.5% of Cu and 0-0.5% of Ni, and the balance Fe and unavoidable microscale impurities. The manufacturing method is characterized in that slab heating temperature is 1050-1280 DEG C by a controlled rolling and controlled cooling method; the temperature for controlled rolling in a recrystallization zone is controlled within the range of 900-1250 DEG C; the temperature for controlled rolling in a non-recrystallization zone is controlled within the range of 700-950 DEG C; initial cooling temperature is 650-800 DEG C; finish cooling temperature is 100-500 DEG C; and cooling rate is 5-35 DEG C / s. According to the invention, elements of V, B and the like are not added, and the total amount of Mo, Cu, Cr and Ni is low. In addition, subsequent heat treatment is not required, the process is simple and requires low cost, and production efficiency is high.

Provided is a cable retraction unit assembly connected to a table for displaying a mobile device. The cable retraction unit assembly includes: a cable connected to a mobile device; a guide housing and a withdrawal unit respectively mounted to an upper portion and a lower portion of a table, with the cable penetrating through the guide housing and the withdrawal unit; and a guide unit rotatably provided within the guide housing, wherein the guide unit is configured to rotate in response to a rotating direction of the cable when the cable rotates, thereby being capable of preventing twisting or breaking of the cable.

A linear actuator comprises an outer tube, an intermediate tube and an inner tube, and the tubes are all polygonal in cross section and are mounted orderly. The outer tube is disposed at the bottom thereof with a push device having a screw and a nut that are screwed with each other. The nut is engaged in the intermediate tube and is linked to move axially by the screw. The intermediate tube can be movably equipped with a pulling member, and the pulling member can link the inner tube to synchronously move in the axial direction. By such arrangements, the linear actuator allows the respective tubes to extend and retract axially relative to one another while preventing them from moving relative to one another in radial direction, thus achieving the stable and smooth axial movement.

The invention discloses wear-resistant steel with good forming performance for a dumper carriage body. Weight percentages of chemical components of the wear-resistant steel are as follows, 0.16-0.22%of C; 0.15-0.35% of Si; 0.90-1.30% of Mn; less than or equal to 0.018% of P, less than or equal to 0.010% of S, 0.020-0.060% of Als; 0.020-0.060% of Nb; 0.012-0.028% of Ti, 0.30-0.70% of Cr, 0.10-0.20% of Mo, 0.0005-0.0018% of B, less than or equal to 0.0025% of O, less than or equal to 0.0050% of N, less than or equal to 1.8 ppm of H and the balance of Fe and inevitable impurities. In the production method, the controlled rolling process comprises the rough rolling process, and austenite recrystallization zone deformed austenite grain uniformity control is carried out in the rough rolling process, and the pass reduction rate is controlled to gradually increase. The wear-resistant steel is advantaged in that the microstructure of the base plate is mainly composed of fine lath martensite, martensite lath size and mechanical property through plate distribution are uniform, a steel plate uniformly extends in all directions during stretching, cutting and U-shaped bending, consistency of machining and forming is guaranteed, straightness of the steel plate ranges from 1 mm / 2 m to 4 mm / 2 m after the steel plate is cut into narrow strips, straightness of a bent end is not larger than 3 mmafter the steel plate is bent in a U shape, and good forming performance is achieved.

A rolling shutter and a slat for use in a rolling shutter are provided. The slat comprises an engaging track located at a first edge and a receptacle track located at a second edge. Illustratively, the engaging track has a hook-shaped profile and is disposed at an acute angle relative to an adjacent part of the body portion, is disposed at an angle of less than 180° relative to a vertical axis of the slat, or has a hook-shaped profile that curves for more than 180°, and the receptacle track comprises a lip and a guard defining a space adapted to receive therein an engaging track of an adjacent slat.

The invention provides a VC nanoparticle-strengthened X90 steel plate for a plastic pipe, and a manufacturing method thereof. The steel plate comprises the following components in percentage by weight: 0.06%-0.12% of C, 0.10%-0.30% of Si, 0.60%-1.40% of Mn, 0.07%-0.15% of V, 0.001%-0.004% of N, 0.01%-0.04% of Ti, 0.025%-0.045% of Al, not greater than 0.010% of P, not greater than 0.005% of S, 0.10%-0.30% of Cu, 0.10%-0.30% of Mo, 0.10%-0.30% of Cr, 0.10%-0.30% of Ni and the balance Fe and inevitable impurity elements. The manufacturing method comprises the following steps: material preparation, converter or electric furnace smelting, external refining, casting, plate blank reheating, controlled rolling and controlled cooling. The steel plate produced by the manufacturing method meets the various mechanical property requirements of the X90 steel plate for the plastic pipe, and is especially high in low-temperature toughness and anti-HIC property.

A cable retractor for use in a variety of applications includes a housing forming an internal chamber, and first and second drums within the chamber for winding of the cable. The first drum may include a stationary outer surface, and the second drum may be formed by a plurality of rollers mounted on a rotatable frame. The rollers may orbit about the first drum upon rotation of said frame, with each of the rollers also rotating about its own roller axis. The first and second drums may be sized to enable wrapping of the cable both side-by-side and in multiple layers about at least one of the first drum and the second drum. The cable retractor may include structure to urge the rollers to rotate with respect to the frame as the frame rotates. For example, a portion of the rollers may be frictionally engaged with a track, and capable of slipping with respect to the track to provide smooth extension and retraction of the cable even as multiple layers of cable are wound about the first and second drums.

The invention discloses a step displacement increasing fracturing automatic control method used for hole opening. The method includes the following steps that S1, fracturing liquid with the first preset displacement is injected into a shaft; S2, the pressure value and the pumping displacement of the fracturing liquid in the shaft are obtained in real time; S3, the pressure feature value in a timewindow is calculated in real time, and a pressure changing feature is analyzed; S4, the displacement increasing amount and the displacement increasing time are determined according to the pressure feature value in the time window and the pressure changing feature; S5, when the displacement increasing condition is met, displacement increasing operation is executed; and S6, the steps S2-S5 are defined as one stage, and when the pumping displacement is smaller than the designed final displacement value, at least one stage is repeated. By means of the step displacement increasing fracture automatic control method used for hole opening, the fracturing effect of the fracturing liquid on an oil / gas reservoir is effectively improved, the utilization rate of a perforation hole is increased, the complexity degree of cracks close to the shaft is lowered, and multiple sets of fractures in the fracturing process can evenly extend; and in addition, the reservoir is increased, the volume and the fracture diversion capability are effectively transformed, and therefore the oil / gas well productivity is increased.

The invention provides an Nbc nano-particle reinforced steel plate for X90 plastic pipes and a manufacturing method of the steel plate. The steel plate comprises, by weight, 0.06-0.12% of C, 0.10-0.30% of Si, 0.60-1.40% of Mn, 0.07-0.15% of Nb, 0.01-0.004% of N, 0.01-0.04% of Ti, 0.025-0.045% of Al, not greater than 0.010% of P, not greater than 0.005% of S, 0.10-0.30% of Cu, 0.10-0.30% of MO, 010-0.30% of Cr, 0.10-0.30% of Ni and the balance being Fe and other inevitable impurity elements. The manufacturing method includes the steps of preparing of materials, smelting in converter or electric furnace, external refining, casting, reheating of plates, controlled rolling and controlled cooling. The steel plate produced by the method has good plastic deformation capacity, and can guarantee safety of oil and gas transmission pipelines laid in zones with complex geological conditions.

The invention relates to a production method of an easily formable high-strength medium-thick steel plate. The method comprises the following process steps: converter steelmaking, ladle furnace refining, vacuum treatment vacuum treatment, continuous casting, heating, rolling, pre-straightening, on-line quenching and tempering heat treatment. The mass percent composition of the steel is as follows: C = 0.06-0.08, Si = 0.15-0.30, Mn = 1.40-1.60, P <= 0.015, S <= 0.005, Nb + V + Ti <= 0.16, Cr + Mo <= 0.4, Alt = >0.020, and Pcm <= 0.21. The Q620E steel plate with a thickness of 200mm produced by the method is good in cold bending, and the cold bending property of the steel plate real object meets the easily forming requirement of users; the yield ratio of the steel plate is smaller than 0.92, and the uniform elongation rate is larger than 8%, which meets the use requirements of relevant designs; the product of strength and elongation is increased by more than 35%, the capacity of resisting dynamic loading of the high strength steel plate is increased, and the equipment safety is improved; through hot charging and on-line quenching of the continuous casting, the production cost is reduced; and with the component design in which Pcm is smaller than 0.21%, the welding properties welding property of the high strength steel plate is improved.

A cable retractor for use in a variety of applications includes a housing forming an internal chamber, and first and second drums within the chamber for winding of the cable. The first drum may include a stationary outer surface, and the second drum may be formed by a plurality of rollers mounted on a rotatable frame. The rollers may orbit about the first drum upon rotation of said frame, with each of the rollers also rotating about its own roller axis. The first and second drums may be sized to enable wrapping of the cable both side-by-side and in multiple layers about at least one of the first drum and the second drum. The cable retractor may include structure to urge the rollers to rotate with respect to the frame as the frame rotates. For example, a portion of the rollers may be frictionally engaged with a track, and capable of slipping with respect to the track to provide smooth extension and retraction of the cable even as multiple layers of cable are wound about the first and second drums.

The invention discloses a rotating shaft mechanism, and the rotating shaft mechanism comprises a plurality of connection units which are connected sequentially. Each connection unit comprises a firstconnecting part and a second connecting part; a first rotating shaft passing through the first connecting part and the second connecting part; a third connecting part; a second rotating shaft passingthrough the second connecting part and the third connecting part; a fourth connecting part; a third rotating shaft passing through the third connecting part and the fourth connecting part; a fourth rotating shaft passing through the fourth connecting part, wherein all rotating shafts are parallel to each other, and through holes which are disposed on all connecting parts and respectively allow thecorresponding rotating shafts to pass through are strip-shaped holes. According to the rotating shaft mechanism, because the rotating shafts are disposed in the strip-shaped holes, the rotating shafts can move and rotate, thereby achieving the uniform extending of the connection units, enabling a neutral layer of the rotating shaft mechanism to be transferred to the surface of a bent inner side to be closer to the neutral layer of a flexible curtain at the inner side of the rotating shaft mechanism, and reducing the damages to the flexible curtain. The invention also provides an electronic equipment with the above rotating shaft mechanism.

The invention discloses one-time cold-rolled continuous annealing packaging steel and a preparation method thereof, and belongs to the technical field of steel preparation. The one-time cold-rolled continuous annealing packaging steel comprises, by mass, 0.03%-0.08% of C, smaller than or equal to 0.02% of Si, 0.15%-0.40% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.012%of S, 0.03%-0.07% of Als, 0.0125%-0.0145% of N and the balance Fe and impurities. According to the one-time cold-rolled continuous annealing packaging steel and the preparation method thereof, the packaging steel with the ferrite+cementite structure and the high forming property can be produced, and the high transverse elongation after baking is achieved.

The invention relates to a production method of an easily formable high-strength medium-thick steel plate. The method comprises the following process steps: converter steelmaking, ladle furnace refining, vacuum treatment vacuum treatment, continuous casting, heating, rolling, pre-straightening, on-line quenching and tempering heat treatment. The mass percent composition of the steel is as follows: C = 0.07-0.09, Si = 0.15-0.30, Mn = 1.55-1.80, P <= 0.015, S <= 0.005, Nb + V + Ti <= 0.10, Cr + Mo <= 0.5, Alt= > 0.020, and Pcm <= 0.23. The Q800F steel plate with a thickness of 200mm produced by the method is good in cold bending, and the cold bending property of the steel plate real object meets the easily forming requirement of users; the yield ratio of the steel plate is smaller than 0.92, and the uniform elongation rate is larger than 8%, which meets the use requirements of relevant designs; the product of strength and elongation is increased by more than 35%, the capacity of resisting dynamic loading of the high strength steel plate is increased, and the equipment safety is improved; through hot charging and on-line quenching of the continuous casting, the production cost is reduced; and with the component design in which Pcm is smaller than 0.23%, the welding properties welding property of the high strength steel plate is improved.

The invention discloses non-quenched and non-tempered 980 MPa grade high-strength strapping steel and a production method thereof. The production method comprises work procedures of hot rolling, cooling, cold rolling and bluing. The non-quenched and non-tempered 980 MPa grade high-strength strapping steel is characterized in that chemical components of the non-quenched and non-tempered 980 MPa grade high-strength strapping steel comprise, by weight percentage, 0.17%-0.23% of C, 1.15%-1.35% of Mn, smaller than or equal to 0.35% of Si, smaller than or equal to 0.015% of S, smaller than or equal to 0.025% of P, larger than or equal to 0.015% of Als, smaller than or equal to 0.0060% of N and the balance iron and inevitable impurities. According to the method, medium low C is adopted, compared with conventional Mn component design, by means of control over a cooling path of the cooling work procedure, the partition of C in the phase change process of the steel is adjusted, medium temperature reeling is controlled, the pearlite transformation organization conversion is avoided, a ferrite bainite organization with the performance better than that of ferrite pearlite can be obtained, and ferrite bainite steel has high tensile strength, good uniform elongation performance and high n value. By means of the method, the high-strength strapping steel with the tensile strength larger than or equal to 980 Mpa and the elongation rate A30 larger than or equal to 10% can be obtained.

A discharge lamp is disclosed, comprising a bulb that is mounted on a base. Four metal fastening brackets which are arranged in an approximately regular fashion around a longitudinal axis of the lamp and are offset relative to each other protrude from the base. Said fastening brackets are welded to a metal clamp which firmly embraces the base. Each fastening bracket has a holding section and an adjacent welded section. A welded cross-section in a joining plane located between the metal clamp and the welded section has a minimum area of 0.5 mm2, and / or the holding section has at least one recess.

The invention provides a pushing-sliding installation device and method for a sail type box steel beam. The installation device comprises a support, a first sliding way, a second sliding way and a pusher. The first sliding way and the second sliding way are horizontally arranged in parallel. The support is arranged between the first sliding way and the second sliding way. The pusher is arranged along the first sliding way and the second sliding way. The installation method comprises the steps that the two ends of the steel beam are hoisted to the first sliding way and the second sliding way at first, then, the steel beam is supported by the support, then the pusher is used for pushing the steel beam to enable the steel beam to slide to a preset position, the same operation is implemented on multiple steel beams, and installation and fixing of a roof steel structure can be completed. According to the pushing-sliding installation device and method for the sail type box steel beam, the construction engineering of a large number of scaffolds is avoided, the redundant welding workload is omitted, and the high-altitude in-place installation precision of components and the installation efficiency of the sail type box steel beam roof structure are improved.

The invention relates to double-roller compaction equipment for a battery pole piece and a compaction method for the battery pole piece, and belongs to the technical field of lithium ion batteries. The invention mainly solves the problem that after the current battery pole piece is compacted, wrinkles are generated between a coating part and a non-coating part, so that the subsequent production of a battery is very unfavorable. The equipment is mainly characterized by comprising paired compression rollers and a filling belt auxiliary device, and the filling belt auxiliary device comprises filling belts and a filling belt winding and unwinding mechanism which are distributed between the paired compression rollers at intervals. According to the invention, when the battery pole piece with a plurality of coating parts and non-coating parts in the width direction is rolled, wrinkles at the boundaries of the coating parts and the non-coating parts can be inhibited. The double-roller compaction equipment has the characteristics that when the battery pole piece passes through the paired compression rollers, the coated part and the uncoated part are simultaneously pressed and extend, so that the uncoated part does not generate wrinkles, and the compaction device is mainly used for compacting the battery pole piece of the lithium ion battery.