49results about How to "Reduce wear effect" patented technology

Device to feed cooling and lubricating fluid to cooling and lubricating nozzles for the pistons of an internal combustion engine, having at least one valve with an upstream channel and a downstream channel, said valve having a blocking element able to move in a compartment to block an opening of a seat. The valve responds to the pressure of the cooling fluid by opening when the upstream pressure is greater than a threshold pressure and closing when the upstream pressure is less than the threshold pressure. A means of calibrated leakage connects the upstream channel to the downstream channel in parallel with the zone of closure of the valve.

The invention discloses a control method replying to levitation instability of a medium-low speed maglev train; through a pre-stored determination scheme, collected operation data of a levitation point is judged to determine whether the levitation point generates levitation instability, and if the levitation point generates levitation instability, a controller sends a levitation instability signal and a synchronous landing signal to other controllers of a same levitation frame; when the levitation instability signal and the synchronous landing signal are received, controllers of levitation points perform synchronous action to make the whole levitation frame landed; all the controllers of the levitation frame have operation parameters reconfigurated, and a normal levitation state of the levitation frame is recovered. The control method can make the medium-low speed maglev train have no need of whole train emergency braking when the levitation instability occurs, so that abrasion influence on rails is relatively small, and normal operation of other carriages and other levitation frames are not affected.

The invention relates to a dry-type desulphurization device which comprises a primary desulphurization reactor, a flue gas feeding device and a desulfurizer supplying device which are communicated with the primary desulphurization reactor, a cyclone secondary desulphurization reactor, and a dust collector mounted below the reactor; the flue gas feeding device adopts a wind chamber which is provided with an internal cyclone vane and has a contractible nozzle used as an outlet, and is disposed below the primary desulphurization reactor; the primary desulphurization reactor adopts a cylinder structure with an expansion section at the central part; an outlet of the primary desulphurization reactor is connected with an inlet of the secondary desulphurization reactor through a pipe; and the invention is characterized in that the diameter of the central expansion section of the primary desulphurization reactor is 1.2-1.5 times as large as the diameters of the upper and lower sections of the reactor.

The invention discloses a blood pump and a power transmission assembly thereof, and the power transmission assembly of the blood pump comprises: a flexible shaft used for driving an impeller of the blood pump to rotate, wherein the flexible shaft is provided with a near end for inputting power and a far end for arranging the impeller; a first flow channel which is used for filling fluid to flow, wherein the first flow channel is provided with an output end adjacent to the near end and used for outputting perfusion fluid and an input end adjacent to the far end and used for inputting perfusion fluid. According to the blood pump and the power transmission assembly thereof, the risk caused when perfusion liquid enters the body of a patient can be reduced.

The invention provides a variable valve timing distribution regulating device, which is applied in the technical field of variable valve timing of engines. Oxidation coverage membranes (5) formed by electrochemical surface treatment are arranged on the surfaces of a stator (1) and a rotor (2). The invention also relates to a method for improving the mechanical property of the variable valve timing distribution regulating device. The method comprises the following steps of: performing electrochemical surface treatment on the stator (1) and the rotor (2); and forming the oxidation coverage membranes (5) capable of improving the surface hardness and the abrasion resistance of the stator (1) and the rotor (2) on the surfaces of the stator (1) and the rotor (2) respectively. By the device and the method, the surface hardness and the abrasion resistance of the stator and the rotor are improved, so that abrasion influences caused by rotation friction are reduced to the minimum extent, and crushing is prevented; and simultaneously, the heat resistance and the corrosion resistance of parts are improved, so that the service life of the device are greatly prolonged.

The invention discloses an electronic speed controller controlled variable-pitch rotor system module, which comprises a central shaft, a power module, an angle measuring unit, an electronic speed controller, a propeller hub, a flapping connecting piece, lead-lag variable-pitch propeller clamps and propeller blades. According to the invention, a serverless periodic variable-pitch scheme is adopted,the power module is controlled by the electronic speed controller to periodically change torque, a rotor can make lagging or advancing action through dynamic torque output, and the blade pitch can bechanged while the propeller blades move in an advancing or lagging mode through the special structure adopted by the invention. The variable pitch effect of a traditional swash plate is obtained by passively coupling horizontal hinges moving vertically and horizontally and responding to pulse torque; in order to achieve the variable pitch purpose, a variable pitch rotor system in the prior art isgenerally provided with a complex control connecting rod mechanism, and the manufacturing difficulty is large, the cost is high and the service life is short. According to the invention, the structure is greatly simplified, the traditional complex control mechanism is abandoned, the weight of the rotor system is reduced, and the material cost and the manufacturing difficulty are lowered.

The invention relates to an intermediate plate (34) for a multi-disk clutch (20), in particular a two-disk clutch. The multi-disk clutch is used for coupling a drive shaft (12) of a motor-vehicle motor to at least one transmission input shaft (16, 18) of a motor-vehicle transmission, in particular for a dual clutch (10). The intermediate plate comprises: an annular body (48) for pressing, in a friction-closed manner, between a counterplate (22) that can be coupled to the drive shaft (12) and a pressure plate (26) that can be axially displaced in relation to the counterplate (22); and a contact tab (46), in particular formed integrally with the annular body (48), for displacably coupling the annular body (48) to the pressure plate (26), wherein the contact tab (46) has a contact body (42), which is formed by plastically deforming part of the contact tab (46) and which protrudes in the axial direction, for axially stopping against a restoring spring (38), which is connected to a pressure plate (26) or further intermediate plate following the intermediate plate (34) in the axial direction and which is designed in particular as a leaf spring. By means of the contact body (42) formed by plastically deforming the contact tab (46), transmission of an especially high torque by means of a friction clutch (20) in the case of different structural forms of a drive train of a motor vehicle is enabled by means of the additional friction surfaces provided by the annular body (48).

The invention relates to a rotary type inertia piezoelectric actuator with a built-in photoelectric encoder, and an actuation method of the same. The rotary type inertia piezoelectric actuator with a built-in photoelectric encoder is formed by a housing, an output shaft, actuation pieces, bearings, a code disc, a photoelectric detection assembly and a printed board, wherein the housing pedestal is provided with the output shaft through the bearing; the lower middle part of the output shaft is provide with a disc with a large section through integrated processing; the lower surface of the disc is pasted with the code disc; a photoelectric detection board and the printed board are fixed below the code disc; and the code disc, the photoelectric detection board and the printed board form a photoelectric encoder; a first actuation piece and a second actuation piece which are in interference fit with a piezoelectric stack are fixed on the inter side wall surface of the housing, and are distributed central-symmetrically with the shaft center point of the output shaft on the plane; and the bottoms of the first actuation piece and the second actuation piece are each provided with a friction foot which are closely pressed on the upper surface of the disc. The rotary type inertia piezoelectric actuator with a built-in photoelectric encoder is novel in structure and reliable in clamping, has the function of measuring the output angle in real time, and can efficiently and stably realize bidirectional rotation.

The invention discloses a low-stress optical fiber cable take-up and pay-off device. The low-stress optical fiber cable take-up and pay-off device comprises a trailer body, a plurality of take-up andpay-off cylinders, speed regulating assemblies and cable moving assemblies, wherein the trailer body is connected with a rolling main shaft; the plurality of take-up and pay-off cylinders are used fortaking up and paying off different optical fiber cables and penetrate through the outer side of the rolling main shaft; each speed regulating assembly is connected to one side of the corresponding take-up and pay-off cylinder and used for regulating the take-up and pay-off speed of the take-up and pay-off cylinder; and each cable moving assembly is connected to the other side of the correspondingtake-up and pay-off cylinder and used for synchronously moving the taken-up and paid-off optical fiber cables at the take-up speed of the take-up and pay-off cylinders. Each speed regulating assemblyis installed on one side of the corresponding take-up and pay-off cylinder, so that the optical fiber cables at the take-up and pay-off cylinders can be conveniently taken up at different rotating speeds; selective movements of the take-up and pay-off cylinders are achieved at transmission pieces, so that take-up and pay-off speeds can be conveniently selected for the different optical fiber cables, and the influence of the optical fiber cables with the low take-up and pay-off speed on the optical fiber cables with the high take-up and pay-off speed is reduced; and meanwhile, through the arranged cable moving assembly, the abrasion influence on the optical fiber cables can be reduced conveniently in the optical fiber cable dragging process.

The invention belongs to the field of numerical control machine tool components, and particularly discloses a rotary centre which comprises a sleeve. A connecting disc used for being connected with amachine tool tailstock is fixed on the outer wall of the sleeve; a mandrel is coaxially and rotationally connected in the sleeve; an ejector pin is arranged the mandrel in a taper matched mode; the tip end of the ejector pin extends out of the mandrel; one end, in the mandrel, of the ejector pin is a small-diameter end; the inner part of the sleeve is eccentrically and fixedly connected with an ejector rod; the ejector rod is inserted into the mandrel and abuts against the end part of the ejector pin; and a dustproof structure is arranged on the part, extending out of the mandrel, of the ejector pin; the dustproof structure comprises a negative pressure fan; and the suction end of the negative pressure fan faces the tip end of the ejector pin. By adopting the scheme, the requirement of rapidly adjusting the taper of the ejector pin can be met.

The invention discloses a locking mechanism. The locking mechanism comprises a locking pull rod and a limiting opening, wherein a connecting end and a fixing module are arranged on the locking pull rod; the fixing module is fixedly connected or movably connected with the locking pull rod; the locking pull rod is movably connected with equipment using the locking mechanism through a connecting end; the limiting opening is connected with the equipment using the locking mechanism; and when the locking mechanism is closed, the locking pull rod and the limiting opening are fixed together through the fixing module in a contacting way. The locking mechanism disclosed by the invention is advantaged in that the structure is simple, the closing and unlocking processes are both simple and convenient, and an effect of rapidly detaching a battery from equipment with the battery through the locking mechanism can be especially achieved; and moreover, as the wear impact of the locking method of the locking mechanism on machinery is less, the service life of the machinery is long; in addition, as the locking mechanism has the simple structure, the locking mechanism can be widely applied to various equipment. As the locking mechanism is simple while being used for manufacturing or temporary mounting, the industrial production cost is greatly saved.

The invention discloses an improved AAO water treatment system and a sewage processing method thereof. The improved AAO water treatment system comprises an anaerobic reactor, an anoxic reactor, an aerobic reactor, and a settling tank, which are connected in sequence. The aerobic reactor is connected to the anoxic reactor through an inner backflow pipeline. The settling tank is connected to a pre-de-nitrification tank through a sludge outer backflow pipeline. The pre-de-nitrification tank is connected to the anaerobic reactor. The fluid inlet end of the pre-de-nitrification tank is connected toa first branch of a raw sewage inlet pipe, and a second branch of the raw sewage inlet pipe is connected to the anaerobic reactor. Compared with a conventional A2O method, a pre-de-nitrification tankis arranged before an anaerobic tank; the backflow sludge and raw sewage of a settling tank are introduced into the pre-de-nitrification tank; organic substances in the raw sewage are utilized by microbes as a carbon source to carry out de-nitrification; the performance of a conventional AAO system on reducing the influence of backflow nitrate is improved; the bad influence of nitrate nitrogen onanaerobic phosphorus release is eliminated; the phosphorus removing effect is ensured; and the nitrogen removing effect is guaranteed at the same time.

The invention discloses a chain for an agricultural harvester and a chain accessory for the agricultural harvester. The chain for the agricultural harvester comprises multiple shaft rollers which are arranged longitudinally and multiple chain bodies which are transversely arranged on the shaft rollers side by side, wherein each chain body comprises multiple chain link units, and each chain link unit comprises a first chain link and a U-shaped second chain link. According to the chain for the agricultural harvester, the second chain links of the U-shaped structure are adopted, the stress direction is parallel to fixing plates on the second chain links when the chain is used, impact resistance is achieved, and the service life is prolonged.

A hopper tee having a horizontal portion through which granular material is unloaded from a tank trailer or hopper car, the hopper tee integrally forms a vertical segment, that secures with the bottom of the hopper, to provide for unloading of granular material for usage or storage. The upper front portion of the tee, as it transitions from its vertical segment to the horizontal flow path has secured or cast therewith a ledge, that provides for accumulation of the unloading granular material therein, to function as a wear pad to resist against abrasion, and accelerated wear out, of the tee, at that location, during prolonged usage.

The invention relates to a mother yarn separation adjusting device. The mother yarn separation adjusting device comprises a mother yarn separation frame for separating mother yarns and a roller adjusting device used for subsequent separation tension adjustment. The mother yarn separation adjusting device is characterized in that the mother yarn separation frame comprises a groove frame, a plurality of lead screw groups perpendicular to a yarn feeding direction are arranged in the groove frame, each lead screw group comprises a front lead screw pair and a back lead screw, each front lead screw pair consists of two lead screws provided with abrasive chromium plating layers, and each back lead screw consists of a single lead screw with a polished chromium plating layer. The mother yarn separation adjusting device is simple in structure, convenient to operate and stable in working; requirements on tension adjustment during mother yarn separation can be met, abrasion influences on the lead screws during yarn separation can be weakened, working efficiency can be improved, and outputted filament completeness is guaranteed.

The invention discloses an environment-friendly energy-saving multifunctional street lamp. The street lamp comprises a lamp post, spring columns are arranged on the two sides of the top of the lamp post correspondingly, and a lamp holder is arranged at the tops of the spring columns; an illuminating lamp and an electronic mosquito killing lamp are arranged on the lower surface of the lamp holder correspondingly, and the lower end of the outer surface wall of the lamp post is connected with a fixing ring in a sleeved mode; elastic rods arranged on the outer surface wall of the fixing ring in anequal-angle welding mode, and a ring frame is welded to the outer sides of the elastic rods; and the inner surface wall of the ring frame is movably connected with buffer roller shafts through transmission shafts, furthermore, soft rubber rings are arranged on the outer surface walls of the buffer roller shafts at equal intervals, and a base is welded at the bottom of the lamp post. According tothe street lamp, the overall structure design of the street lamp is simple and reasonable, and a solar energy power collection and power supply mode is adopted, an electric device for the street lampis driven to work, so that the energy consumption of the street lamp is effectively reduced; and meanwhile, the street lamp further has multiple functions of mosquito killing, illumination and direction indicating, so that the function diversity of the street lamp is greatly improved, and the practicability of the street lamp is enhanced.

The invention discloses a terminal wire. The terminal wire comprises a cable and connectors connected to the two ends of the cable respectively; the cable comprises a wire and an insulating sheath wrapping the periphery of the wire; each connector comprises a data plug and a power plug; each data plug comprises a plug shell and a plugging part, the cross section of the plugging part is approximately trapezoidal and convexly extends out of the end wall, far away from the tail end of the cable, of the plug shell, and the plugging part is connected with the wire; each power plug comprises a plugbody and pins, and the pins are connected with the wire and protrude out of the plug body; a plug switch is arranged on the side wall of each plug body, and the contact of each plug switch is connected to the wire connected with the plug pin in series; and a reinforced coating structure is arranged between the rear end of each power plug and the cable. After electrical equipment is used, the wirecan be cut off through the plug switch, it is guaranteed that the cable is not electrified, the power plug does not need to be frequently plugged and unplugged, damage is prevented, and the layout ofthe plug switch does not influence use of the power plug.

The invention relates to angle seat valves, and discloses a double-eccentric butterfly valve. The double-eccentric butterfly valve comprises a valve body, a shaft rod and a disc plate, wherein the valve body is provided with a sealing face, and a step with an annular shape is arranged at the inner edge of the sealing face; an annular first sealing ring is arranged at the step, an annular first groove is formed in the middle of the first sealing ring, the top of the outer wall of the first groove extends outwards to form an annular boss, and the bottom face of the boss is tightly attached to the sealing face; and the upper part and the lower part on the inner side of the inner wall of the first groove are divided into two inclined faces which are inclined inwards, a second sealing ring is further inlaid on the sealing face, and an insert covering the sealing face is further arranged at the sealing face. According to the valve, the first sealing ring and the second sealing ring cooperatefor sealing, moreover, the structure of the first sealing ring is improved, several seals are formed by the inner wall and the outer wall of the first sealing ring during sealing, so that the influence of the outside on the sealing performance is reduced; in addition, the friction between the disc plate and the first sealing ring is reduced, the torque of the disc plate is small, and the servicelife is long; and the upper part of the shaft rod is of a stepped structure, so that the shaft rod can be prevented from being blown out due to accidental breakage.

A hopper tee having a horizontal portion through which granular material is unloaded from a tank trailer or hopper car, the hopper tee integrally forms a vertical segment, that secures with the bottom of the hopper, to provide for unloading of granular material for usage or storage. The upper front portion of the tee, as it transitions from its vertical segment to the horizontal flow path has secured or cast therewith a ledge, that provides for accumulation of the unloading granular material therein, to function as a wear pad to resist against abrasion, and accelerated wear out, of the tee, at that location, during prolonged usage.

The invention discloses a built-in rotary encoder for detecting the rotation speed, which comprises a connecting seat, a base and a rotating shaft. The bottom of the connecting seat is provided with the base, the top of the base is provided with the rotating shaft, the top of the connecting seat is provided with an upper bearing, and the top of the upper bearing is connected to the bottom of the outer surface of the rotating shaft; a connecting shaft is connected to the middle of the outer surface of the rotating shaft, a coding disc is mounted in the middle of the outer surface of the connecting shaft, and a mounting base is arranged on one side of the top of the coding disc. Through the arrangement of the coding disc and a speed measurement module, after a power line assembly is connected with an external power source, the whole device is driven to work, the coding disc works along with rotation of the rotating shaft, when the rotating shaft works, the speed measurement module can synchronously carry out speed measurement work, and therefore the speed measurement function of the device is added; and a light detector, a light source assembly, a photoelectric emission unit and a photoelectric receiving module are arranged in the device work, so that the whole device is driven to work normally.

According to the invention, an intermediate plate (34) is proposed for a multi-plate clutch (20), especially a double-plate clutch, in particular for a double clutch (10) and for connecting a motor vehicle engine The drive shaft (12) is coupled with at least one transmission input shaft (16, 18) of the motor vehicle transmission, and the intermediate plate has: an annular body (48) for being pressed into the drive shaft (12) with a friction fit ) between the counter pressure plate (22) coupled and the pressure plate (26) that can move axially relative to the counter pressure plate (22); It is used to couple the ring body (48) with the pressure plate (26) in a stroke transmission mode, wherein the contact piece (46) has a contact body (42) protruding in the axial direction, which is used for the axial stop in the especially On the return spring (38) configured as a leaf spring, the contact body is formed by plastic deformation of a part of the contact lug (46), said return spring is connected to the pressure plate ( 26) or other intermediate board connections. Through the contact body (42) formed by the plastic deformation of the contact web (46), by means of the additional friction surface provided by the annular body (48), in the case of different structural forms of the drive train of the motor vehicle, by means of The friction clutch (20) achieves transmission of particularly high torques.