73results about How to "Reduce preload" patented technology

A method for operating an engine direct injection fuel system is provided. The direct injection fuel system includes a mechanical fuel pressure regulator that has a spring actuatable by an electric motor. The method includes adjusting a preload of the spring by operating the electric motor to adjust a set-point fuel pressure from a first set-point fuel pressure to a second set-point fuel pressure in response to an operating condition, and maintaining the preload of the spring mechanically when the electric motor is not operating.

The invention relates to disposable device for the continuous centrifugal separation of a physiological fluid. The inventive device comprises: a fixed axial element; a centrifugation chamber which is mounted such that it can rotate around the axis of said element; an inlet channel for the blood to be centrifuged, the dispensing port of which is located close to the base of the chamber; and an outlet passage for a separated constituent, the inlet port of which is located close to the other end of the chamber in a concentrated area of one of the separated constituents having the lowest mass density in order for same to be removed continuously. The above-mentioned chamber takes the form of a long tube. The fixed axial element comprises a second outlet passage for a second of the separated constituents, the inlet port of which is located close to the end of the chamber opposite the above-mentioned base in a concentrated area of said second separated constituent having the highest mass density in order for same to be removed continuously.

The invention discloses a continuous hot-pressing method for a large-section section. The method comprises a pretreatment process, a continuous hot-pressing process and a post-treatment process, and is characterized in that: the continuous hot-pressing process comprises the following steps of: A, preheating and prepressing; B, hot-pressing and curing; and C, cooling to guarantee quality. In the method, a continuous blanking mode is adopted, the preheating and the prepressing are increased, and a microwave or high-frequency heating technology is adopted during hot pressing. By the method, a non-lumber small-diameter class bamboo material, a secondary material of poor quality, a single-plate residual material, saw dust and the like are machined into a high-quality material; and the method has the advantages of wide material sources, simple and convenient material manufacturing process, high utilization rate of the material, convenience of operation, low energy consumption, investment saving and the like. Meanwhile, the method can be used for machining the material with any length in a continuous pressing mode and can also be used for machining the material with the thickness of 500mm.

The invention relates to a hydraulic steering gear, belonging to the technical field of hydraulic transmission and control. One end of the valve body of the steering gear is fixedly connected with a stator with a cycloidal pin wheel rotor. A spool which stretches out of a front shaft and a valve pocket which can form a runner switching valve together with the spool are arranged in the valve body. A linkage shaft penetrates through the inner hole of the spool. One end of the linkage shaft is provided with outer teeth which are engaged with a spline in the rotor, and the other end of the linkage shaft is connected with the spool through a radial shifting pin. An annular sealing groove is arranged on the surface of the inner hole of the valve body which is matched with the front shaft. An annular sealing skeleton made of a lubricating wear-resistant material is installed in the sealing groove. One surface of the sealing skeleton is in fit with one sealing surface, and the other surface of the sealing skeleton is provided with a groove which can hold a sealing ring. An elastic sealing ring which is in fit with the other sealing surface is arranged in the groove. On the premise that a good sealing effect is guaranteed, the input torque for power steering is effectively reduced.

A cable end anchorage for fastening at least one cable at a supporting structure includes at least one first connecting element for connection with the supporting structure, at least one second connecting element for connection with the cable and at least one coupling element for connection of the two connecting elements in a force-transmitting manner. In the region of the coupling element, an overload device designed as a predetermined breaking point of the coupling element is provided for unfastening the connection between the two connecting elements when a critical load has been exceeded. A stop device is provided for limiting the relative motion of the connecting elements after unfastening of the connection when a critical load has been exceeded. The cable end anchorage features a transverse plate that is connected with the coupling element in a force-transmitting manner and at least one tension rod that penetrates the transverse plate in a recess with an at least slightly radial clearance, wherein one end of the tension rod is connected with one of the two connecting elements in a force-transmitting manner on one side of the transverse plate, and a terminal plate is provided at the opposite end of the tension rod on the other side of the transverse plate, the terminal plate serving as a stop on the transverse plate when a critical load has been exceeded.

A preload reducing fastener adapted to be fastened into a system in which includes a release system. The fastener may have an integral collar which is adapted to change shape, as in the case of a shape memory alloy. The application of heat to fastener may deform the collar such that the fastener may move axially in the load direction, thus reducing the preload previously held by the fastener. A preload reducing device including a preload reducing fastener may include an outer case adapted to center and capture a preload reducing fastener. The case may center the fastener in a desired location in a preloaded system, and may also capture the fastener after release of the system.

The present invention provides a main decelerate device which includes a planet gear load-uniformed mechanism, a driver gear and a initiative bevel gear driven by the device, a driven bevel gear engaged with the initiative bevel gear and a speed differientiator connected to the driven bevel gear. It is characterized in that one of the sun gear in the planet gear load-uniformed mechanism is connected to the initiative bevel gear, another sun gear is connected to one of two engaged intermediate drive gears by an axle sleeve, another intermediate drive gear is connected to a secondary initiative bevel gear, the initiative bevel gear and the secondary initiative bevel gear are both connected to a driven bevel gear with double cog. The device divides the power into two parallel path powers with reverse rotate direction and equal torsion, and then combines the two powers into one power by making the main, secondary initiative bevel gears engage with the driven bevel gear with double cog, and passes the power to the speed differientiator by the driven bevel gear and output the power by an axle shaft gear, thereby complete the power output between interleaving shafts, conquers the axial direction offset of the driven bevel gear and increases the drive ability by times.

To provide a bearing device for a wheel installed on a light-weight light alloy knuckle and capable of preventing preload reduction and bearing creep from occurring due to temperature rise. This bearing device for the wheel comprises a hub wheel (1) integrally having a wheel mounting flange (4) at one end and having a small diameter step part (5) axially extending from the wheel mounting flange (4) formed therein, a wheel bearing (3) formed of a double row bearing disposed in the small diameter step part (5), and the knuckle (2) forming a suspension device and formed of a light alloy. The wheel bearing (3) is press-fitted into the knuckle (2) at a specified interference, and the hub wheel (1) is rotatably pivoted on the knuckle (2). A pair of annular grooves (18) are formed in a loading area on the outer periphery of the outer ring (12) of the wheel bearing (3), and resin bands (19) formed of a heat resistant polyamide synthetic resin and having a coefficient of linear expansion of 8 to 16 x 10<-5>/ DEG C are filled in the annular grooves (18) by injection molding.

An elastomer bush bearing is disclosed with at least one axial limit stop. An elastomeric bush bearing is provided with a damping characteristic that can be adapted to the respective application and/or to changing preloads. The bearing is constructed in that a stop face formed on the bearing body and the opposing stop face, arranged on the inner sleeve or on a stop element supported by the inner sleeve, which can be rotated relative to each other in the circumferential direction of the bearing by an actuator or can be displaced relative to each other in the axial direction. The mutual separation between the stop faces determined by the gap changes simultaneously with a corresponding relative motion of the stop faces effected by a rotation of the actuator.

The invention provides a gate type plate shearing machine which is provided with front supporting points of a small structure and has a simple overall structure and low cost. The gate type plate shearing machine comprises a machine frame, a tool rest and an oil cylinder, wherein the tool rest is arranged on the machine frame through a three-point supporting structure in a vertical sliding mode, and the oil cylinder drives the tool rest to move vertically. The tool rest comprises a tool rest vertical plate and tool rest side plates fixed to the two sides of the tool rest. An upper blade is fixed to the lower edge of the oblique tool rest vertical plate, and a lower blade is fixed to the machine frame. The three-point supporting structure comprises the front supporting points, upper rear supporting points and lower rear supporting points, and the front supporting points, the upper rear supporting points and the lower rear supporting points are arranged on the machine frame. The front supporting points are elastic supporting points tightly pressed on the front of the tool rest, and the upper portion and the rear portion of the rear of the tool rest maintain contact with the upper rear supporting points and the lower rear supporting points respectively under the action of the elastic supporting points on the tool rest. The positions, in the vertical direction, of the lower rear supporting points are flush with the cutting edge of the lower blade.

A clutch plate (6), as well as a method for operating a clutch (3), between the drive motor and the transmission (1) of a motor vehicle. The clutch plate includes a cylinder with a piston (14) and an actuator (15), such that a clutch release bearing (4), arranged co-axially to the central axis of the clutch, may be operated to apply an axial pre-tensioning force on the clutch release bearing and conduct an operating medium into the clutch plate for axially displacing the piston and/or the clutch release bearing. To simplify a clutch plate of this type and enhance its utilization, the clutch plate is configured and used for generating the pre-tensioning force.

A cardiac pump includes a plain bearing assembly having a first plain bearing portion that is coupled to a cardiac pump rotor and a second plain bearing portion that is coupled to a cardiac pump housing. The plain bearing assembly is configured to rotatably support the cardiac pump rotor within the cardiac pump housing in at least an axial direction of the cardiac pump rotor. A magnetic bearing assembly includes a first magnetic bearing portion that is coupled to the cardiac pump rotor and a second magnetic bearing portion that is coupled to the cardiac pump housing. The magnetic bearing assembly is configured to rotatably support the cardiac pump rotor within the cardiac pump housing in a radial direction of the cardiac pump rotor and bias the cardiac pump rotor in the axial direction such that the magnetic bearing assembly provides a preload force to preload the plain bearing assembly.

The invention discloses a handheld farming machine engine damping device, which comprises a base. A longitudinal damping module and a transverse damping module are arranged above the base; the longitudinal damping module comprises an engine connecting plate which is horizontally arranged, and a plurality of longitudinal dampers used for supporting the engine connecting plate are arranged between the engine connecting plate and the base; the multiple longitudinal dampers are evenly arranged at intervals by taking the center line of the engine connecting plate as the center and surrounding the center; and the transverse damping module comprises a support fixedly connected to the front part of the longitudinal damping module, an elastic connecting piece is arranged between the support and theengine connecting plate, and the support and the engine connecting plate are connected through the elastic connecting piece. The handheld farming machine engine damping device is simple in structureand can consume vibration energy brought by an engine, thus vibration transmission for handles is lowered, and the discomfort feeling of an operator is relieved.

A Chinese medicine for treating cardiovascular and cerebrovascular diseases, such as cerebral thrombosis, coronary heart disease, angina pectoris, vasculitis, myocardiac infarction and hyperlipemia, is prepared from safflower and hawthorn leaf, or their extracts (safflower yellow and hawthorn leaf flavone).

The invention relates to a method for shifting gears of a transmission device gear-shifting transmission capable of being switched between at least two transmission levels. A transmission device is driven by a hydrostatic transmission; in order to shift the gears of the gear-shifting transmission between the transmission levels, the method comprises the steps as follows: Step 1, unloading the gear-shifting transmission: changing the input quantity and/or the liquid inlet quantity per revolution of a hydraulic motor until the pressure difference on the hydraulic motor is lower than the preset pressure difference, or over-regulating a brake valve device to an opening position for stopping a brake valve function; Step 2, shifting the gear-shifting transmission into a neutral gear; Step 3, performing electric-hydraulic synchronization on the revolving speed of the hydraulic motor; Step 4, shifting the gear-shifting transmission into a new transmission level; Step 5, applying a load to the gear-shifting transmission.

A medical composition in the form of injection or orally taken solid or liquid for treating coronary heart disease, angina pectoris, hypertension, cerebrovascular disease, hemicrania, diabetes, etc is proportionally prepared from kakonein and hawthorn leaf flavone.

The invention discloses a controllable centrifugal drum type high-rise descent control device. A winding wheel is connected with an accelerator mechanism which is connected with a centrifugal drum type brake mechanism, a manual brake mechanism and an automatic descent speed control mechanism are connected onto the centrifugal drum type brake mechanism respectively, and a fireproof steel wire is wound on the winding wheel through a lead hole in a machine frame. The controllable centrifugal drum type high-rise descent control device achieves automatic uniform-speed descent through the accelerator mechanism and the centrifugal drum type brake mechanism, achieves the purpose of slow descent, and is simple and easy to use. A speed regulation knob is controlled manually, a transmission control spring group is tensioned (loosened) so as to increase (reduce) pre-tightening pressure exerted on a brake block, and the purpose of increase (reduction) of automatic descent speed is achieved. A movable handle is controlled, a part of axial force generated by the movable handle is transformed into positive pressure which is perpendicular to a shaft and is exerted on the brake block to form a braking torque so as to achieve that descent can be stopped manually at any time in the descent process, no electric power is needed, the slow descent function is completed through mechanical transmission, and the controllable centrifugal drum type high-rise descent control device is safe and reliable.

The invention belongs to the technical field of membrane separation and water treatment filter bodies, particularly relates to a preparation method of a porous plate ceramic nanofiltration body based on silicon-zirconium sol, and solves the problems that an existing inorganic nanofiltration membrane preparation process is complicated, other filter membranes are not firmly combined with a carrier, the pore diameters of filter pores in the filter membranes are not uniform and the like. According to the scheme, the preparation method comprises the following preparation process: (1) dissolving tetraethoxysilane and zirconium n-butoxide in a solvent, then adding a catalyst and water, and stirring under a variable-temperature condition to form silicon-zirconium sol; (2) pretreating the porous plate ceramic support body, and then putting the porous plate ceramic support body into a drying oven for heating; (3) dipping the support body preheated in the step (2) into the silicon-zirconium sol obtained in the step (1), taking out and drying at room temperature; (4) carrying out heat treatment roasting, taking out and cooling to room temperature; and (5) repeating the steps (3) and (4) at least once to form the porous plate ceramic nanofiltration body with the silicon-zirconium adhesive film on the surface.

A pressure detection device includes: a cylindrical body made of a conductor; a pressure receiver made of a conductor, the pressure receiver being mounted to one end side of the body and receiving pressure from the outside; a signal generator arranged inside the body, the signal generator being electrically connected to the pressure receiver and generating a signal corresponding to the pressure received by the pressure receiver; and a cover made of an insulator with a lower thermal conductivity than thermal conductivities of the body and the pressure receiver, the cover continuously covering an outer surface of the pressure receiver and a portion of an outer surface of the body, the portion being located at a side closer to the pressure receiver.