126results about How to "Improve anti-overload performance" patented technology

The invention relates to a high-rigidity nine-lever and two-freedom degree controllable mechanical loading mechanism, which comprises a machine frame, a movable arm control branched chain and a bucket control branched chain, wherein the movable arm control branched chain is controlled by a first driving lever and is used for elevating a movable arm; the bucket control branched chain is controlled by a second driving lever and is used for turning a bucket. The mechanical loading mechanism can complete loading and unloading operation by means of the interaction of the movable arm elevating branched chain and the bucket control branched chain. According to the mechanical loading mechanism, all the levers are connected through revolute pairs, and thereby the defects of high cost, low reliability, high maintenance cost and the like of the conventional full hydraulic loading mechanism with sliding pairs are overcome. Moreover, compared with other controllable loading mechanisms, the mechanical loading mechanism has the advantages of compact structure, high rigidity, and novel structure with superior kinematic and dynamic performance, and thereby the loading mechanism is higher in reliability and dynamic stability.

The invention discloses steel slag asphalt graded crushed rock mixture. The steel slag asphalt graded crushed rock mixture comprises the following components in percentage by weight: 90-93 percent of aggregate particle, 4-6 percent of asphalt and 3-4 percent of limestone mineral powder, wherein the aggregate comprises the following four grain compositions in percentage by weight: 21-24 percent of grain composition 1, 20-28 percent of grain composition 2, 19-25 percent of grain composition 3 and 32-37 percent of grain composition 4; the granularity of the grain composition 1 is smaller than or equal to 31.5mm and larger than 19mm, the granularity of the grain composition 2 is smaller than or equal to 19mm and larger than 9.5mm, the granularity of the grain composition 3 is smaller than or equal to 9.5mm and larger than 4.75mm, and the granularity of the grain composition 4 is smaller than or equal to 4.75mm and larger than 0mm; and the aggregate is steel slag or the mixture of the steel slag and limestone. Proved by experiments, the mixture has the advantages of low cost, reasonable granularity grain size distribution, water proof performance and good stability.

The invention relates to a single chip silicon SOI high temperature low drift pressure sensor in the field of sensitive sensing technology. Wherein the four voltage-sensitive resistances which form the Wheatstone bridge adopt SOI material; it adopts the interval compensation and the outer compensation technology of partial interval resistance of the SOI resistance network to make the zero point temperature drift below 1X10-6Vs/íµ; it adopts girder-film-island structure to improve the sensibility and linearity of the sensor; it adopts polysilicon with thick boron and the aluminum lead wire covered the lead wire surface to form the interval lead wire of the sensor; it adopts thick boron automatically end technology to make high sensibility high temperature low drift pressure sensor.

The invention relates to a working platform inclination angle measurement method and an apparatus thereof. The method comprises the following steps: acquiring the inclination angle beta between a working platform and a vertical plane in the rotation state through an inclination angle sensor arranged on the workbench, and acquiring the rotation angle rate omega of the working platform in the rotation state through an angular rate sensor arranged on the working platform; measuring the rotation radius R of the working platform through a radium measurement instrument; and calculating through utilizing a formula alpha=arcos(x-y) to obtain the practical inclination angle alpha of the working platform, wherein x=cosbeta, y=omega<2>R/g, and g is the gravitational acceleration. The practical inclination angle alpha obtained through calculating is treated as the measured inclination angle of the working platform. The method and the apparatus allow the inclination angle of the working platform to be accurately measured during the rotation of the working platform, so a problem that the measured inclination angle is less than the practical inclination angle value because of the omitting of the influence of the centripetal force during the rotation of the working platform in the prior art is solved.

A large-rigidity multi-connecting-rod controllable mechanical loading mechanism comprises a frame, a movable arm control branch chain and a bucket control branch chain. The movable arm control branch chain is controlled by a first drive rod to perform movable arm ascending or descending. The bucket control branch chain is controlled by a second drive rod to control turning of a bucket. By cooperation of the movable arm control branch chain and the bucket control branch chain, loading operation can be completed. Rods of the mechanical loading mechanism are connected through rotating pairs, and the defects that traditional total-hydraulic loading mechanisms containing moving pairs are high in manufacturing cost, poor in reliability, high in maintenance cost and the like are overcome. Compared with other controllable mechanical loading mechanisms, the loading mechanism is compact in structure, high in rigidity, and good in reliability and dynamic stability by using the novel structure with excellent kinematic and dynamic performance.

The invention relates to a target type flowmeter of a non-contact type displacement sensor. An elastic element (4) is arranged in a casing (3), a target bar (2) is arranged in the elastic element (4), the lower end is provided with a target piece (1), the upper part of the target bar (2) is provided with a mechanical damping device (5), the top end of the target bar (2) is provided with detection displacement magnetic steel (6), a position corresponding to the detection displacement magnetic steel (6) is provided with a Hall linear displacement sensor (7), and a signal output end of the Hall linear displacement sensor (7) is connected with a microprocessor (8) and a display (9). The Hall linear displacement sensor does not directly contact with the target bar, the influence of the target bar vibration on the sensor is reduced by the mechanical damping device, the Hall linear displacement sensor can not be damaged even if the elastic element end generates plastic deformation, the sensor is far away from a measuring medium, and a high-temperature type flowmeter can be manufactured. The service life of the sensor is prolonged, the measurement accuracy is enhanced, and the product of the target type flowmeter is truly reliable and durable and has low maintenance quantity.

The invention discloses a working roll for rolling a medium-thickness plate with high grade and high strength and a manufacture method thereof. The working roll is applied to a medium-thickness plate rolling mill of a rolling steel industry. A working layer comprises the following alloy components in percentage by weight: 3.00-3.50 percent of C, 0.40-1.20 percent of Si, 0.50-1.20 percent of Mn, not more than 0.10 percent of P, not more than 0.05 percent of S, 1.30-2.50 percent of Cr, 3.20-4.50 percent of Ni, 0.20-1.00 percent of Mo, 0.20-2.00 percent of W and 1.00-1.50 percent of V. A roll core comprises the following chemical components in percentage by weight: 2.80-3.50 percent of C, 2.00-2.50 percent of Si, 0.50-1.00 percent of Mn, not more than 0.10 percent of P, not more than 0.05 percent of S, 0.20-0.50 percent of Cr, 0.20-0.60 percent of Ni, not more than 0.20 percent of Mo and not more than 0.30 percent of Re. The working roll manufactured by adopting a centrifugal composite casting process and two-section tempering production at 400-550 DEG C for 25-30 hours is the working roll for rolling the medium-thickness plate with high grade and high strength, which has the advantages of high abrasion resistance and less hardness reduction.

The invention discloses a biaxially resonant silicon-micromachined accelerometer in the shape of a Chinese character 'tian' and aims at designing and manufacturing a high-sensitivity and high-resolution biaxially-resonant silicon-micromachined accelerometer. The structure is characterized in that (1) because a mass block structure in the shape of a Chinese character 'tian' is adopted, the volume of a mass block is maximized, and the acceleration can be converted into an inertial force more effectively; and the whole structure is symmetrically distributed, which is favorable for resisting noises and inhibiting temperature drift; (2) a support beam (in the shape of a Chinese character 'ji') arranged at the periphery of the structure facilitates the release of the residual stress and temperature stress of the structure, thereby reducing the support stiffness of the structure in a sensitive direction; (3) due to the application of a spring-like beam (in the shape of a Chinese character 'kou') at one end of a resonator, the influence of external shocks on the beam is reduced, and the spring-like beam plays a role in releasing the residual stress of the structure; and (4) an arc structure at the root part of a tuning fork in the resonator can be used for effectively reducing the energy coupling and improving the mechanical quality factor of the resonator, and is easy for realizationof closed-loop control.

The invention discloses an electro-hydraulic integrated driver for a rotary pin of a container hanging tool. The electro-hydraulic integrated driver comprises a bi-directional motor, a bi-directional hydraulic pump, a bi-directional hydraulic cylinder and two pilot-controlled check valves, wherein a shell of a bi-directional motor, the body of the bi-directional hydraulic pump, the body of the bi-directional hydraulic cylinder, the body of an overflow valve and bodies of the pilot-controlled check valves are integrally formed by a component. The bi-directional motor and the bi-directional hydraulic pump are located on a same shaft, and outlets on two ends of the bi-directional hydraulic pump are connected to inner cavities arranged at two sides of the bi-directional hydraulic cylinder through one pilot-controlled check valve. The two ends of piston rods of the bi-directional hydraulic cylinder are respectively connected with the rotary pin through a connecting rod. When the bi-directional motor turns left, the piston rod stretches out right, and the connecting rod drives the rotary pin to rotate and lock. After a power supply switches, the bi-directional motor turns right, the piston rods stretch out left, the connecting rod drives the rotary pin to rotate reversely and unlock. After the rotary pin rotates to a locking position or a unlocking position, the bi-directional motor stops to operate, high-pressure oil in the cylinder is kept under actions of the pilot-controlled check valves so as to lock the rotary pin. The electro-hydraulic integrated driver for the rotary pin of the container hanging tool has a compact structure, has no leakage pollution, and has an anti-overloading capability and a strong impact resistance capability.

The invention discloses a high-load thrust sliding bearing capable of adjusting thermal deformation through self feedback. The high-load thrust sliding bearing capable of adjusting thermal deformationthrough self feedback comprises a rotor, an axial positioning base, a thrust disc, bearing pads, bearing fulcrums, a fixed base, an oil retaining ring and the like. The thrust disc is connected withthe axial positioning base axially fixed on the rotor, and is opposite to the bearing pads, a bearing gap is reserved in the middle, each bearing fulcrum is arranged in the middle of the bottom of thecorresponding bearing pad, each bearing pad can rotate around the corresponding bearing fulcrum in a small range, and circumferential oil holes and longitudinal oil holes which communicate with eachother are formed in each bearing pad. According to the high-load thrust sliding bearing capable of adjusting thermal deformation through self feedback, by guiding bearing hot oil to the back surfacesof the bearing pads, the upper surface temperature and the lower surface temperature of the bearing pads tend to be consistent, the thermal deformation counteracts each other, the warping deformationof the bearing pads is reduced, and the bearing capacity and the safety of the bearing are improved.

The invention relates to a forwards-overturning night-rod two-freedom-degree mechanical loading mechanism which is formed by a rack, a movable arm control branched chain and a bucket control branched chain. The movable arm control branched chain is controlled by a first driving rod and conducts movable arm ascending or descending operation, the bucket control branched chain is controlled by a second driving rod to enable a bucket to be overturned, and the movable arm control branched chain is matched with the bucket control branched chain to jointly complete loading and unloading operation of the mechanical loading mechanism. All rod pieces of the mechanical loading mechanism are in rotary pair connection, and the shortcomings that a traditional moving-pair-contained full hydraulic type loading mechanism is high in manufacturing cost, poor in reliability, high in repairing and maintaining cost and the like are overcome; compared with other controllable-structure type loading mechanisms, the mechanical loading mechanism is compact in structure and large in rigidity, a brand new structure with the excellent kinematics and dynamics performance is adopted, and the reliability and the dynamic stability of the loading mechanism are good.

This invention provides balance long impact oil extraction device, which comprises motor, automatic brake, decelerator input axis, decelerator, decelerator output axis and sheave parts on shell top platform, wherein, the drive rope is connected to hanging device and ring through drive rope fix device two end set inside sheave parts; the hanging rope and ring are connected through light bar and match parts; when sheave rotates, it drives rope and match drive rope for synchronous reverse movement.

The invention discloses a magnetic fluid flywheel for a spacecraft, which is capable of avoiding the problems of friction damping and abrasion of a conventional mechanical flywheel and prolonging theservice life and the overload resistance, and belongs to an attitude control system of the spacecraft. The magnetic fluid flywheel comprises a conductive fluid ring component, a magnetic steel component and electrodes. The magnetic fluid flywheel is simple in structure, high in assembly precision and convenient to replace. The magnetic steel component is used for providing a high-strength uniformvertical main magnetic field for a conductive fluid, a positive electrode and a negative electrode of the magnetic fluid flywheel are lead out by the two electrodes, the positive electrode and the negative electrode are electrified to enable the inner wall and the outer wall of a fluid ring to form a potential difference, the conductive fluid is stressed to rotate through the charge movement, andthe conductive fluid in the conductive fluid ring component can rotate to generate torque and angular momentum in order to realize the low-disturbance ultra-quiet index of the magnetic fluid flywheel.

The invention relates to a high-overload-resistant double-stator-rotor series ultrasonic motor and an implementation mode. The ultrasonic motor comprises a middle shell, the center of the middle shell is taken as a central point, and the middle shell is divided into two symmetrical parts by a symmetrical section penetrating through the central point along the radial direction of the middle shell; a rotor assembly and a stator assembly are arranged in each part in a sleeving manner, and the rotor assemblies of the two parts are arranged in series close to the symmetric section; stator seats are installed at the ends of the middle shell respectively, stator supporting frames and first buffer rubber rings are distributed on the surfaces of the stator seats, protruding cylinders are arranged in the centers of the stator seats, the protruding cylinders are sleeved with the stator supporting frames, the first buffer rubber rings and the stator supporting frames are coaxially arranged, and disc springs are distributed between the stator seats and the stator supporting frames. The stator assembly sleeves the stator support frame, and the tooth surface of the stator assembly sleeves the rotor assembly; the stator and the rotor can bear high overload impact in the positive and negative axial directions, and meanwhile, the high overload resistance is achieved.

The invention relates to a novel horizontal dry-type power transformer, comprising a horizontal iron core and a shell, wherein the horizontal iron core is externally provided with a low-voltage coil,a main insulating air channel between a high-voltage coil and the low-voltage coil, and the high-voltage coil; one side of the horizontal iron core is provided with a high-voltage lead, a high-voltagelead screw, a high-voltage lead insulator, a low-voltage side insulator, a low-voltage side zero line row and a low-voltage side outgoing line row; the other side of the horizontal iron core is provided with a fan for cooling the device body and a guide baffle; and the upper and lower end surfaces of the horizontal iron core are provided with horizontal iron core clamps. According to the horizontal dry-type transformer disclosed by the invention, the device body is horizontally installed, occupies a small space, and can be conveniently installed in a mobile power supply station, and moreover,the horizontal dry-type transformer is particularly suitable for being used as a transformer of a mobile power supply due to the characteristics of no flammability and explosion, a special ventilation and heat dissipation structure of the horizontal dry-type transformer is beneficial to the dissipation of heat generated during the operation of the transformer, and the efficiency of forced heat dissipation can greatly enhance the overload resistance of the transformer.

This invention relates to one micro speeder for normal bullet process anti-high load compound meter, which comprises four sets of micro speeder units, wherein, the units are set by two times two array; two above rows pressure sensitive resistance is set along beam length direction; down two sets of micro speeders pressure resistance along fix beam width direction; each micro speeder unit frame is of one integral one.

The invention discloses a vertical shaft wind-driven generation system structure and a control method thereof, belonging to the technical field of wind-driven generation. The structure comprises a bracket, a fixed pitch angle blade, a top combination component, a generator and a bottom combination component, wherein the top combination component consists of a bearing and top chassis; the bottom combination component comprises a braking device, a data gathering and controlling module, an energy consumption resistor and a base; the structure is characterized in that a fixed connecting rod in prior art is replaced by a middle control combination with adjustable and controllable pitch angle. The control method of the structure comprises the steps of: (1) setting an allowable value; (2) making the blade of a pitch variable fan vertical to the ground; (3) sampling an output signal regularly; (4) making a comparison between the collected value and the set value; (5) determining whether the collecting value is beyond the set value, if so, carrying out step (6), if not so, carrying out step (7); (6) making the blade of the pitch variable fan parallel to the ground; (7) changing the windward angle, and performing (8); (8) determining whether the wind speed is more than the rated wind speed, if so, access an energy consumption resistor, and returning to step (3); if not so, carrying out step (9); and (9) determining whether current wind speed is less than the accessed wind speed, if so, stopping operating the system, if not so, returning to step (3).

The invention relates to an intelligent projector, which comprises a pedestal, a projection mechanism, a supporting frame and an adjusting mechanism. A mounting assembly comprises a first mounting unit and a second mounting unit. The first mounting unit comprises a motor, a worm, a driving wheel and a first bolt. The second mounting unit comprises a first fixing shaft, a first cylindrical gear, a first connecting rod, and a second bolt. The adjusting mechanism comprises a second cylindrical gear and a locking mechanism. Through the mounting assembly, a fixing block can be connected reliably and fixedly, so the pedestal and the supporting frame can be detached flexibly, and the projector is improved in practicability. Moreover, the adjusting mechanism can adjust angles of the projection mechanism, and also can fix and limit the projection mechanism, so the reliability of the projector is improved.