721results about How to "Low rotational resistance" patented technology

The priority sequence in a control of adjusting the drive power with respect to a vehicle drive power request is set in the sequence of: (1) an engine output increase, (2) a motor output increase, and (3) a gear speed change in a gear ratio increasing direction. More specifically, a gear speed of a least gear ratio is selected within such a range that an engine revolution speed higher than or equal to a predetermined lower limit revolution speed is attainable. A requested drive power is achieved singly by an engine output with the gear speed selected. When the requested drive power is not achievable singly by the engine output, the requested drive power is achieved by the engine output and a motor output. When the requested drive power is not achievable by the engine output and the motor output, the gear speed is changed in a gear ratio increasing direction.

The invention discloses a concentric sliding block simultaneous casing drilling tool, a center drilling bit and centralizer. The concentric sliding block simultaneous casing drilling tool is formed by the centralizer, a ladder-shaped tapping center drilling bit and semicircle-shaped expanding drilling pieces, wherein the ladder-shaped tapping center drilling bit is connected and matched with a hole to which the centralizer is aligned for torque transmission, the ladder-shaped tapping center drilling bit is connected and located through a locating groove, a locating hole, a solid cylindrical pin and a hollow expansion pin, three semicircle-shaped expanding drilling pieces are in torque transmission through a T-shaped oblique groove and an R arc-shaped oblique groove, mutual included angles of the T-shaped oblique groove and the R arc-shaped oblique groove are 120 degrees by using an axis of the ladder-shaped tapping center drilling bit as the center, the semicircle-shaped expanding drilling pieces slide backwards to the end surface of the centralizer along the T-shaped oblique groove and the R arc-shaped oblique groove when being subjected to rock resistance and can be located, an expanding simultaneous casing can be formed, and the semicircle-shaped expanding drilling pieces slide downwards, can be narrowed and withdrawn due to the resistance of a pipe boot during upward drawing. According to the concentric sliding block simultaneous casing drilling tool disclosed by the invention, the front area of the tapping drilling bit is small, the force is concentrated, and the tapping drilling bit can crush harder or large rocks firstly at stages at crushing speed.

The invention discloses an irregularly shaped multi-arris notch groove drill rod, which consists of a hollow multi-arris rod body and a connecting piece, the section outline of the multi-arris rod body consists of tangential paths and circular arc sections, and incontinuous spiral grooves are distributed on the surface of the rod body simultaneously. The drill rod can cause vortex flow when whirling in loose cinder and raise coal dust deposited on the bottom of a drilling hole in virtue of the arris of the drill rod, and the coal dust in the drilling hole is at a moving status all the time, thus preventing the coal dust from accumulating in the drilling hole and resulting in blockage; simultaneously, the incontinuous spiral grooves distributed on the surface can assist in the outward transmission of the cinder, and when hole collapsing in the drilling hole, the outside of the collapsed hole is unchoked by the hole digging function of the spiral grooves, thus being not easy to have drill absorption and drill blockage. The drill rod has the advantages of reasonable design, simple structure, safety and reliability, thus greatly improving deslagging effect, being beneficial to increasing the depth of the drilling holes, shortening hole drilling time, improving work efficiency and having high hole forming rate. Therefore, the drill rod is worth popularizing and applying in mining enterprises.

The invention relates to a hydraulic connection operating platform of grounding wires, belonging to a machine tool for carrying out hydraulic connection on two electric grounding wires by using a crimping pipe. Two rails are erected on a platform base in parallel; two grounding wire support bases are arranged at the left side and the right side of the two rails by sliding blocks; a pair of hydraulic pliers are fixed in a fixed ring through a plurality of fastening bolts; the fixed ring is welded on a mounting plate; the mounting plate is arranged on the two rails through four sliding blocks arranged the lower part of the mounting plate; a stepping motor is arranged on the platform base; a ball screw is connected with the stepping motor through a shaft; the ball screw is arranged below the platform base through two sliding rail supports and spirally connected to a screw nut; and the screw nut is fixed on the bottom surface of the mounting plate. The hydraulic connection operating platform disclosed by the invention has the characteristics of simple structure, safety and reliability, controllable lapping length of the two grounding wires and high crimping efficiency.

The invention discloses a closed type helical hole-protecting drill and a using method thereof for drilling of a soft coal bed. The closed type helical hole-protecting drill comprises a closed type helical hole-protecting drill pipe and a helical slag-guiding drill bit, and the helical slag-guiding drill bit is mounted at the front end of the closed type helical hole-protecting drill pipe. The closed type helical hole-protecting drill is mainly applied to the drilling engineering of the soft and breaking coal rock layer. The using method includes mounting and connecting a drill, the closed type helical hole-protecting drill pipe, the helical slag-guiding drill bit and an orifice slag discharging device, starting the drill, breaking and drilling the coal bed by the helical slag-guiding drill bit, guiding drillings into the helical slag discharging space of the closed type helical hole-protecting drill pipe along slag-guiding helical grooves of the drill bit, and discharging the drillings out of the hole through friction of helical blades. The closed type helical hole-protecting drill is novel in design, and is provided with a hole protecting function via structural innovation of the helical blades, the drillings are discharged within in the protected space and prevented from being influenced by deformation and collapse of drilled holes, and the defect that a conventional casing drill is high in drilling resistance, low in slag discharging efficiency and the like is overcome.

The invention discloses an asymmetric deformed-section drill pipe which is composed of a hollow pipe body and a connecting piece which are detachably connected; beads which are more than or equal to two and less than or equal to eight are arranged on pipe body along the pipe body, and the outer surface of the bead is an arc surface which takes an axle wire of the pipe body as a circle center, and one side of the bead and the pipe body form a long-strip groove. The drill pipe has reasonable design and simple structure; drill adsorption and drill blocking can not easily happen according to the principle of vortex flow caused by rotation of the deformed-section rigid body in loose coal slag, therefore, the drill pipe is safe and reliable, slag-off effect is greatly improved, thus being beneficial to improving drilling depth, shortening drilling time and improving working efficiency and pore-forming efficiency and being worth of being popularized and applied in coal mine enterprises.

The invention provides a stent, a thrombelastogram instrument and a supporting system. The stent comprises a fixed supporting part, a movable supporting part and a connection part. The connection part comprises a first fixedly connecting piece and a second fixedly connecting piece. The first fixedly connecting piece is fixedly connected with the fixed supporting part, and the second fixedly connecting piece is fixedly connected with the movable supporting part. The first fixedly connecting piece and the second fixedly connecting piece are connected together in a point connection mode. The movable supporting part is fixedly connected with an external supported object, and the movable supporting part rotates relative to the fixed supporting part under driving of the supported object through the point connection mode of the first fixedly connecting piece and the second fixedly connecting piece. The thrombelastogram instrument comprises a rotary shaft and the stent. According to the scheme, the rotating resistance borne by the supported object in the rotating process can be reduced.

A torsional vibration damper is described having at least two parts rotatable around an axis of rotation, which are pivotable toward one another against the effect of at least one energy accumulator, the parts pivotable toward one another having regions using which the energy accumulator, which acts around the circumference of the torsional vibration damper, is compressible, the energy accumulator having at least one spring held in a carrier.

The invention relates to a rapid soybean milk making method of a soybean milk maker. A cooking stage also includes the step of overflow prevention, the hot air in a pulverizer is sucked away by a sucking pump, the outside cold air rapidly enters the pulverizer via an air inlet under the difference between the outside air pressure and the air pressure in the pulverizer, the air which flows at high speed breaks rising soybean milk bubbles and decreases the surface temperature of the soybean milk liquid, so that overflow is prevented, consequently, the hot steam of cooking is sucked away by the sucking pump, the surface temperature of the soybean milk bubbles is decreased, the bubbles rapidly expand and break according to the principle of thermal expansion and contraction when the gas temperature in the bubbles is higher than the outside temperature, negative pressure is generated in the pulverizer as the hot steam is sucked away, the outside air is formed into high-speed airflow under the effect of pressure difference and is rapidly replenished into the pulverizer, the high-speed airflow also can break the bubbles of the soybean milk liquid, and thereby the efficiency of overflow prevention is increased greatly.

The invention discloses a drill rod with functions of hole protecting, pressure relief and internal slag discharging. The drill rod comprises hollow rod bodies, flow injecting pipes coaxially arrangedin the rod bodies, and supporting pieces connecting the rod bodies with the flow injecting pipes; slag discharging channels are formed between the inner walls of the rod bodies and the outer walls ofthe flow injecting pipes; the flow injecting pipes are internally provided with air inlet and water inlet channels; and with the direction opposite to the rotating direction during drilling of the drill rod bodies as the reverse direction, the outer cylindrical surfaces of the rod bodies are provided with spiral grooves rising in the reverse direction and in cylindrical spiral shapes, and a plurality of pressure relief holes communicating with inner cavities in the rod bodies are formed in the spiral grooves. During drilling of a soft coal seam and an outburst coal seam, the drill rod has theadvantages that the hole protecting ability is high, the slag discharging channels are not prone to being plugged, the hole forming effect is good, the slag discharging and temperature reducing abilities are high, and the hole collapse area is automatically dredged.

The invention relates to a low-flow resistance rotor with self-cleaning function and heat transfer enhancement used in a heat transfer tube, which comprises a plurality of rotors, supporting frames and a connecting shaft line. The supporting frames are fixed at the two ends of the heat transfer tube. The two ends of the connecting shaft line are fixed on the supporting frames respectively. The plurality of rotors are skewered on the connecting shaft line between the two supporting frames. The rotor consists of a hollow shaft and fins, wherein the hollow shaft is provided thereon with one and more fin(s), each fin is oblique to the central line of the hollow shaft, the working surface of each fin is swirl or flat or a combination thereof, and the fins are fixed uniformly on the outer surface of the hollowing shaft. In the inventive technical proposal, a fluid inside a tube can drive the rotor by the fins to rotate at a proper speed, so as to inhibit and eliminate the deposition of dirt, the fins can disturb the fluid inside the tube to enhance the convection heat transfer, the rotor occupies a small area inside the heat transfer tube to increase the axial flow area and reduce the blockage rate and flow resistance in the heat transfer tube, and the service life of the rotor is significantly prolonged.

The invention discloses a PHP mud manufacturing method and applications of PHP mud, and belongs to the reconstruction technology field of cast-in-situ bored pile manufacturing method and applications thereof. According to the PHP mud manufacturing method, bentonite, sodium carbonate, hydroxymethyl cellulose, and polyacrylamide are taken as main raw materials, barite powder is taken as an additive. The PHP mud manufacturing method comprises following steps: a, material preparation; b, stirring of a base slurry; c, material adjusting; and d, additive adding. The invention also discloses applications of PHP mud, and PHP mud can be applied to construction of cast-in-situ bored piles. Beneficial effects are that: thixotropy is excellent; specific gravity is low, and solid phase content is low; viscosity is high; mud cover is thin; water loss is low; dispersion is not caused; and environmental protection performance is excellent.

The invention discloses a hose filling and tail sealing machine. The hose filling and tail sealing machine comprises a rotary plate and a plurality of hose cup bases, wherein the hose cup bases can rotate; a filling mechanism, a benchmarking nitrogen filling mechanism and a tail sealing mechanism are arranged along the rotating direction of the rotary plate in turn; the benchmarking nitrogen filling mechanism comprises a rotating shaft, a sleeve and a photoelectric color mark sensor, wherein the rotating shaft can ascend and descend, the sleeve and the rotating shaft are arranged coaxially, the sleeve can rotate, and the photoelectric color mark sensor is fixedly arranged on one side of the sleeve; the hose cup base can rotate along with the rotation of the rotating shaft; the inner diameter of the sleeve is not smaller than the outer diameter of a hose; the circumferential direction of the sleeve is provided with a plurality of vent holes; a nitrogen filling nozzle which can ascend and descend is fixedly arranged in the center of the sleeve; the bottom of the nitrogen filling nozzle extends from the sleeve; the top of the nitrogen filling nozzle is connected with a nitrogen cylinder. According to the hose filling and tail sealing machine, the automatic benchmarking can be performed on the hose after the filling is achieved due to the benchmarking nitrogen filling mechanism and meanwhile the air inside the hose can be discharged and accordingly the quality life of the paste liquid in the hose is extended.

The invention discloses a novel high magnetic suspension intelligent vehicle storage garage. Two or more layers of concentric annular parking spaces which can rotate are arranged on the upper surface of each layer of body structure, and wheels of the annular parking spaces rotate on annular rails. A lifting shaft is arranged in the circle center of the novel high magnetic suspension intelligent vehicle storage garage, a lifting device is arranged in the lifting shaft, an intelligent automatic moving vehicle is arranged on the lifting device, and each layer of parking spaces are provided with one rail for the intelligent automatic moving vehicle to walk. A photovoltaic generation system is arranged at the upper end of the lifting shaft, and magnetic suspension structures are arranged between the wheels of the annular parking spaces and the annular rails. The novel high magnetic suspension intelligent vehicle storage garage has the advantages that the photovoltaic generation system is adopted, environmental friendliness is achieved, a high magnetic suspension driving lifting structure is adopted for the intelligent automatic moving vehicle, the rails are used for providing electric power, and the problem of arrangement through air cylinder air ways is solved; the magnetic suspension structures are adopted between the rails of the annular parking spaces and the wheels, the rotation resistance is greatly reduced, electric power consumption is lowered, and the novel high magnetic suspension intelligent vehicle storage garage is suitable for solar power supply.

The invention relates to a rotating piece type automatic-cleaning and heat-transfer enhancing device, in particular to a device used for a heat transfer pipe for a tubular heat exchange device. The device comprises one or more rotating piece(s), hanging parts, an axial line and limiting rivets and is used by being placed in a heat exchanger, wherein the number of the hanging parts is two, and the two hanging parts are respectively fixed at both ends of the heat transfer pipe; the rotating pieces are placed in the heat transfer pipe of the heat exchanger; the rotating pieces are used and arranged in groups, and the limiting rivets are arranged between each group of the rotating pieces at intervals; the axial line penetrates through an axle holes of the rotating pieces and the limiting rivets, and both ends of the axial line are fixed on the two hanging parts; the rotating pieces are of screw twisted shapes, concavo-convex slot structures are alternatively arranged at the position of the axial line at intervals and are axle holes of the axial line, the friction between the rotating pieces and the axial line can be effectively reduced, thus the service life of the rotating pieces is prolonged; and the rotating pieces have simple molds, can be made of plastics or metal and can be molded by pressing or by injection according to the different materials. The device has the dual functions of automatic on-line cleaning and scaling control and enhancing heat transfer in the heat transfer pipe and is convenient to manufacture, assemble, use and replace.

A magnetic-field thermo-pressing process for preparing the high-performance magnetic material with magnetic anisotropy includes such steps as preparing the ultra-magnetostrictive RE powder or permanent-magnet NdFeB powder or permanent-magnet SmCo powder in vacuum or inertial gas or organic medium, mixing it with adhesive, coupling agent and lubricant, and thermopressing at 80-350 deg.C under 300-900 MPa in a magnetic field (1.5-2.5T).

A wheel support structure for a two-wheeled vehicle, configured either in such a manner that an encoder mounting plate is mounted to an end of the outer ring of one rolling bearing in the axial direction, the end being located on the other rolling bearing side, and a magnetic encoder for detecting rotational speed is attached and affixed to the inner peripheral surface of the cylindrical section of the encoder mounting plate, the cylindrical section extending outward from the outer ring in the axial direction, or in such a manner that the magnetic encoder for detecting rotational speed is attached and affixed to a side surface of a slinger, the side surface of the slinger being located on the other rolling bearing side, the slinger being mounted to the end in the axial direction and having an inner diameter-side end surface located close to the outer peripheral surface of the inner ring to form a labyrinth gap. Preferably, a rotation restraining member is engaged with the outer peripheral surface of the outer ring which is a rotation-side raceway ring, and the rotation restraining member and the inner peripheral surface of a hub which is a rotation-side member are engaged with each other.

The invention discloses an online longitudinal cutting machine for thick glass. The two side faces of a cutting machine mounting bracket are respectively provided with a set of glass cutting devices. Each set of glass cutting devices comprises two sets of cutting tools and two sets of top wheels respectively. The two sets of cutting tools are located on the two sides of the position above a glass conveying roller way in the transverse direction. Each set of cutting tools comprises a knife wheel, a knife rest and an air cylinder. The knife wheels are movably arranged on the knife rests, and the knife rests are arranged on an air cylinder link piston rod and are located above the glass conveying roller way. The knife wheels of the cutting tools rotate along with moving of the glass conveying roller way under a down-press state so as to scrape longitudinal tool marks on a glass belt. The two top wheels are arranged on the two sides of the position below the glass conveying roller way in the transverse direction, are located under the corresponding knife wheels, and rotate along with moving of the glass conveying roller way to jack and support the glass belt. By the adoption of the structure, online thick glass cutting is achieved, the two sets of online glass cutting devices can be switched to conduct cutting operation, and thus the requirement for thick glass production is met.

The invention provides a damper bearing, belonging to the field of bearing. The damper bearing comprises a fixed loop, a movable loop, a damping loop, a shell and a sealing ring, wherein the movable loop comprises a first movable loop and a second movable loop which are connected with each other, the first movable loop is closer to the fixed loop relative to the second movable loop, the outer diameter of the first movable loop is greater than the outer diameter of the second movable loop; the damping loop is arranged between the first movable loop and the fixed loop; the fixed loop, the movable loops and the damping loop are arranged in the shell, and the shell is fixed with the fixed loop, the inner diameter of one end of the shell, far away from the fixed loop, is smaller than the outer diameter of the first movable loop, and the second movable loop penetrates through the shell; the sealing ring is arranged in a region formed by surrounding of the shell, the first movable loop and the second movable loop. The damper bearing with the structure can alleviate the abnormal abrasion between the damping loop and the first movable loop caused by impurities so that the service life of the damper bearing is long, and the performance is stable.

The invention relates to a high-efficiency wave, tide, ocean current, wind and light power generation, marine ranching and farm and purification platform. A carrier comprises a lower guide plate. A multifunctional buoyancy tank comprises a buoyancy tank main body and a wind energy collection power generation device located on the upper portion of the buoyancy tank main body. The buoyancy tank mainbody is fixedly connected with the lower guide plate. An upper layer platform is supported on an energy collection guide plate. The two sides of the buoyancy tank main body are each provided with atleast one vertical high-efficiency low-resistance suspended turbine containing groove. A high-efficiency low-resistance suspended turbine is arranged in the high-efficiency low-resistance suspended turbine containing groove. The platform has the following beneficial effects that new resources of wave, tide, ocean current, wind and light are comprehensively used for generating power with high efficiency and low cost and are integrated into the movable environment-friendly multifunctional platform, and arrangement of functional modules such as a marine ranching module, a marine farm module, a marine monitoring and exploration module, a seawater hydrogen production and desalination, a maritime travel sightseeing lodging module and a marine purification module can be achieved according to actual demands.

The invention discloses a rocking/rotating arc gas metal arc welding torch and a using method thereof. The rocking/rotating arc gas metal arc welding torch comprises a hollow shaft motor, wherein a lower extending shaft is fixedly connected with an upper extending shaft of a feed disc penetrating through an electric brush mechanism in a motor base through a coupler, and a lower extending shaft ofthe feed disc is connected with an eccentric or bent conducting rod mechanism after penetrating through a supporting bearing arranged in an electric brush base; a motor base of the hollow shaft motoris fixedly connected with the electric brush base through connecting screws, and welding shielding gas and welding torch cooling effects are provided through inner holes of the connecting screws and abuilt-in gas circuit and a built-in cooling water circuit of the electric brush base; and when no additional sensing device is arranged on the upper extending shaft of the motor, the arc rocking/rotating frequency and the arc rocking midpoint are identified/detected through pre-calibration or a built-in photoelectric encoder of the servo motor, and the length of the conducting rod mechanism is adjusted through a blending or telescopic adjusting method. The welding torch is simple and compact in structure, high in transmission positioning precision, good in process adaptability, high in practicability, suitable for rocking arc and rotating arc gas shielded welding and capable of being used for submerged-arc welding in an expanded mode.

The invention discloses an anti-drag device capable of adjusting the wheel spoke hole area automatically, and relates to an anti-drag device capable of changing the hole area between spokes automatically according to the automobile speed. The anti-drag device solves the problem that the wind drag coefficient of a wheel and fuel consumption are enlarged when an automobile is driven at high speed due to the fact that air eddy is generated in a wheel cavity or positions nearby with the existence of a hole between the spokes. The anti-drag device is composed of a supporting frame, foliated cover plates and connecting transmission parts arranged between the supporting frame and the foliated cover plates, the supporting frame is fixed on a wheel hub and is located between a brake disc flange and the wheel hub, and the foliated cover plates are capable of rotating around the supporting frame. The anti-drag device does not work when the automobile speed is lower so that heat generated by frequent braking of the automobile can be emitted effectively and cannot influence the automobile. The anti-drag device is capable of decreasing the hole area between the wheel spokes automatically along with the increase of the automobile speed until the wheel hole is close to entirely closed, so that the wind drag coefficient of the automobile wheel is reduced greatly, fuel consumption is reduced, and the automobile fuel economy is improved.