61results about How to "Achieving stationarity" patented technology

The invention discloses a rehabilitation system for disabled persons based on virtual reality, which comprises a functional electrical simulation module, a motion capture module and a virtual reality module; wherein the motion capture module is respectively connected with the functional electrical simulation module and the virtual reality module. By stimulating the nerves and muscles of human body and simultaneously recording the limb movement after stimulation, the rehabilitation system for disabled persons based on virtual reality adjusts a functional electrical stimulation parameter through closed loop control, and presents the movement to a user by utilizing a virtual reality technology. For the reconstruction of limb movement function, the closed loop control is a more natural optimal control method which realizes the stationarity of limb movement and better conforms to human movement characteristics. Real-time visual feedback can effectively promote the reconstruction of limb movement function and improve the efficiency of rehabilitation training. The three-dimensional interactive immersing environment of the virtual reality can provide multi-mode feedback information such as visual feedback information, acoustic feedback information and the like of movement process and movement effect for patients, arouse and maintain the motivation of the patients for repetitive practice.

The invention discloses a pixel circuit, a drive method and a display device. The pixel circuit comprises a high level input end, a low level input end, a reset module, a first charge control module, a detection drive module and a storage capacitor; the reset module is used for endowing the storage capacitor with initial voltage at a reset phase; the first charge control module is connected with a data line and a first end of the storage capacitor and is used for writing data voltage into the storage capacitor at a charge phase; a first input end of the detection drive module is connected with a second end of the storage capacitor; a second input end of the detection drive module is connected with the high level input end; the output end of the detection drive module is connected with a lighting device; when electric quantity of the storage capacitor is not fully charged, at a display phase, the second input end of the detection drive module is conducted with the lighting device; when the electric quantity of the storage capacitor is fully charged, at the display phase, the first input end of the detection drive module is conducted with the lighting device. The pixel circuit, the drive method and the display device can delay attenuation of current flowing through the lighting device.

The invention discloses a multilevel control valve, comprising a reversing valve component, a safety valve component and a valve body; wherein, the reversing valve component comprises a reversing valve liquid intake cavity communicated to a balance cylinder of a hydraulic support, a reversing valve control cavity communicated to an upright column cylinder of the hydraulic support and reversing valve liquid return cavity communicated to the safety valve component, a valve core and a valve sleeve positioned inside the reversing valve component, an adjusting spring for the reversing valve component which is arranged inside the reversing joint of the reversing valve component and puts the predetermined load on the reversing valve core through the a spring base and an ejection pin, and a reversing joint matched with the reversing ejector pin under the action of the predetermined load of the adjusting spring in the reversing valve component; the safety valve component comprises a liquid intake cavity connected with the reversing valve liquid outlet cavity used to empty the reversing valve liquid return cavity, a valve core of the safety valve, a valve spring of the safety valve and a safety valve guiding piston matched with the valve core of the safety valve under the action of the predetermined load of the valve spring of the safety valve. The invention has the advantages of prolonging the service life of the high hydraulic support balance cylinder, improving the stability of the gesture adjusting of the hydraulic support and guaranteeing the safe operation of the hydraulic support.

The invention discloses a fully-automatic screen printer for sheets. The fully-automatic screen printer for the sheets comprises a conveying unit arranged at the inner side of a rack, wherein the conveying unit is used for conveying a material to be processed and correcting a position to be printed, of the material; a printing unit is arranged above one end of the rack, and a discharge lifting unit is arranged at the other end of the rack; the discharge lifting unit is used for supplying the material to be processed and feeding back material lack information in time; a material taking mechanism is arranged at one end connected with the discharge lifting unit, of the rack; a vision unit is arranged above the material taking mechanism, and used for obtaining position image information of thematerial to be processed and on the conveying unit, and carrying out information feedback; and a material receiving mechanism is arranged on a part below the printing unit, of the rack. According tothe fully-automatic screen printer for the sheets, the accuracy of product alignment and printing is effectively increased, so that wider application range and higher universality are achieved, and electricity consumption and ink resource are saved; and moreover, the fully-automatic screen printer for the sheets is convenient to maintain and replace, so that the maintenance cost is greatly reduced.

The invention relates to the field of tissue manufacturing equipment, in particular to a cable winding disc. The cable winding disc comprises a rack, a winding disc body rotationally arranged on the rack and used for winding a cable, a winding servo motor arranged on the rack and used for driving the winding disc body, and a guide device arranged on the rack, located in front of the winding disc body and used for guiding the cable, a sliding rail parallel to the axial direction of the winding disc is arranged at the position, in front of the winding disc, of the rack, the guiding device comprises an installation base capable of sliding along the sliding rail, a sliding driving device arranged on the rack and used for driving the installation base to slide, a clamping guiding wheel set arranged on the installation base and a guiding servo motor used for driving the clamping guiding wheel set to rotate, the clamping guiding wheel set comprises two guide wheels close to each other, arc-shaped guide grooves are formed in the circumferences of the guide wheels, and the arc-shaped guide grooves of the two guide wheels are matched to form a guide channel allowing the cable to pass through. According to the cable winging disc, the technical problems that cable winding tightness degree is inconsistent, and cables are stacked in a certain area are solved.

The invention relates to four-wheeled manned lunar rover adjustable suspension. The four-wheeled manned lunar rover adjustable suspension comprises suspension left rocker arms, suspension right rockerarms, wheel mechanisms, a lunar rover chassis, left springs, right springs and telescopic rods; the suspension left rocker arms and the suspension right rocker arms are distributed at the front end and the tail part of the lunar rover chassis; the suspension left rocker arms are hinged to the lunar rover chassis through first hinged shafts; the suspension right rocker arms are hinged to the lunarrover chassis through second hinged shafts; and the adjacent suspension left rocker arms and suspension right rocker arms are connected through the left springs, the telescopic rods and the right springs. The suspension left rocker arms, the suspension right rocker arms and the wheel mechanisms constitute a splayed-shaped suspension mechanism for walking; the left springs and the right springs constitute a spring mechanism for shock absorption; and the telescopic rods form a telescopic rod mechanism for adjusting the wheel distance. According to the four-wheeled manned lunar rover adjustablesuspension, the springs are used for the shock absorption of running of a lunar rover, the rover spacing of the lunar rovers is adjusted by using the stretching and retracting of the telescopic rods,the height of the lunar rover is reduced, the running stability of the lunar rover is improved, and the wheel distance is increased to enable the lunar rover to pass through a plurality of big obstacles.

The invention discloses a Ka frequency range high-power waveguide rotary joint consisting of an upper half and a lower half which are mutually connected and respectively connected by a T-shaped branch with an H surface and a TM01 mode conversion part; the TM01 mode conversion part comprises a rectangular straight waveguide and a round waveguide; the round waveguide is arranged at the center of the rectangular straight waveguide and is butted with the wide side of the rectangular straight waveguide which is in a symmetric form relative to the centre of the circle of the round waveguide; and two branches of the T-shaped branch with an H surface are connected with two ports of the rectangular straight waveguide. With a bilateral symmetric exciting TM01 mode method, a path of signals is decomposed into two paths of signals with equal width and same phase by the T-shaped branch with an H surface so that the correlation to a frequency is greatly lowered when a TE11 mode is inhibited, the high inhibition on the TE11 mode is realized within larger bandwidth, and the stability of the electrical property of the rotary joint in rotating is realized.

The invention relates to a unilaterally driven horizontal hinge type non-threshold watertight landing gate. The unilaterally driven horizontal hinge type non-threshold watertight landing gate comprises a landing gate body, a top two-lug hinge, a drive oil cylinder, watertight rubber arranged on the inner side of the top of the landing gate body, a batten arranged on the bin wall, a bottom pressing wedge base arranged on a bin bottom board. The landing gate body is connected with the bin wall in a floating mode through the top two-lug hinge, and an upturned landing gate is formed. The landing gate body is connected with the bin wall through the drive oil cylinder arranged on the single side so that the landing gate can be opened. Sealing of the top of the landing gate is achieved through linkage of two connecting points on hinge bodies on the two sides of the top two-lug hinge, and the landing gate is opened or closed stably through rigid connection between the hinge bodies on the two sides of the top two-lug hinge. The unilaterally driven horizontal hinge type non-threshold watertight landing gate can be applied to watertight landing gates for ship lifters, and can improve the airtightness and safety of a whole passageway and a whole bin.

The invention discloses a safe welding equipment, which comprises a connection box, and a baffle plate fixedly arranged on the top of the connection box, an insertion slot is arranged inside the connection box, and the left end surface of the connection box A swivel is rotatably provided, and a rectangular snap-in slot is provided in the swivel, a receiving slot is provided in the right end surface of the electrical connection box, and a propulsion slot is connected between the receiving slot and the insertion slot, A vertical slot is provided in the connection box on the left side of the insertion slot, and an insertion block is provided in the insertion slot to slide left and right. The overall structure design of the present invention is reasonable, and the connection is safe and stable, greatly It reduces the electric shock accidents when plugging and unplugging the electric connector, effectively guaranteeing the safety of people's lives, the unlocking and locking of the electric connector is convenient and fast, suitable for popularization and use, and greatly reduces the production cost, and through manual control adjustment, Increasing the amount of exercise of people is helpful to people's health.

The invention belongs to the technical field of stereo parking equipment, and particularly relates to a small double-layer parking device with no avoidance at a side position. The small double-layer parking device comprises an upper-layer parking device, a sliding block device, a stand column frame, a driving device, a push rod device and a lower-layer parking mechanism. The upper-layer parking device comprises bending rod mechanisms, a vehicle carrying frame and an upper-layer vehicle carrying plate. Four corner bottoms of the vehicle carrying frame are hinged to one ends of the four bendingrod mechanisms correspondingly. The other ends of the four bending rod mechanisms are hinged to the upper-layer vehicle carrying plate. The four corners of the vehicle carrying frame are connected with the stand column frame through the sliding block device. The driving device is connected with the sliding block device and is used for controlling the upper-layer parking device to ascend and descend as a whole. The push rod device is arranged on the ground on one side of the stand column frame, is connected with the upper-layer vehicle carrying plate, and is used for pushing the upper-layer vehicle carrying plate out of the stand column frame. The small double-layer parking device has the advantages of being simple and convenient to install, small in occupied space and stable in vehicle ascending and descending control and facilitating vehicle leaving and entering.

The invention provides a steel wire dissecting machine, and belongs to the technical field of metal machining. The steel wire dissecting machine comprises a straightening device, a wire drawing deviceand a dissecting device. The straightening device comprises a longitudinal straightening mechanism and a transverse straightening mechanism. The wire drawing mechanism comprises a driving wire drawing mechanism and a driven wire drawing mechanism. The dissecting device comprises a dissecting standard shaft knife mechanism and a dissecting reciprocating knife mechanism. A steel wire walking groovehole is formed in the axial direction of a dissecting standard shaft knife of the dissecting standard shaft knife mechanism. The dissecting reciprocating shaft knife mechanism comprises a dissectingreciprocating assembly and a dissecting reciprocating drive assembly. A steel wire cutting groove hole is formed in the axial direction of the dissecting reciprocating shaft knife. Steel wires can becontinuously dissected, the dissecting length is accurate, the cutting efficiency is high, the cutting length can be adjusted, and the applicability is high.

A method and a system for predicting a gas content in transformer oil based on a joint model are provided and belong a field of transformer failure prediction. The method includes the following: determining a type and a time series of gas to be predicted related to a failure, processing an original series by adopting empirical mode decomposition (EMD) and local mean decomposition (LMD) for a non-stationarity characteristic of a dissolved gas concentration series in oil; performing normalization on each sub-series component, dividing a training sample and a test sample; and establishing a deep belief network (DBN) prediction model for each of the sub-series components for training, performing superposition and reconstruction on the established DBN prediction model to perform characteristic extraction and classification on multi-dimensional data of the failure, evaluating prediction performance of the prediction model through calculating an error index.

The invention relates to a device for automatically detecting remainders in an aerospace engine, and belongs to the technical field of detecting the remainders in the aerospace engine. The device aims to solve the problem of low detecting efficiency in the traditional remainder detecting method during swinging or swaying in the aerospace engine. A detecting device which is arranged on a turn table comprises an industrial personal computer, a servo amplifier, a servo motor, a planetary reducer, a No. 1 synchronous pulley, a synchronous cog belt, a No. 2 synchronous pulley, an output rotating shaft, an electromagnetic shielding box, a conducting slip ring, a tote cart, a clamp, an acoustic sensor group, a sensor cable, a conditioning circuit, a six-channel synchronous data acquisition card and a fast chuck, wherein the aerospace engine is arranged on the tote cart; the industrial personal computer controls the servo motor to drive the output rotating shaft to rotate, the fast chuck for mounting and clamping the aerospace engine is mounted at one end of the output rotating shaft, and the electromagnetic shielding box and the rotor part of the conducting slip ring is mounted at the other end of the output rotating shaft; the detection signal of the acoustic sensor group is fed back to the industrial personal computer.

The invention relates to the field of machinery. An electrical cabinet with a grounding interlock comprises an electrical cabinet main body, wherein the electrical cabinet main body comprises a shell, the grounding interlock is arranged in the shell and comprises an interlock piece, the interlock piece is connected with a block body by a transmission mechanism, an external convex part is arranged on the block body, the block body is connected with the shell in a sliding way, an opening is formed in the shell and is used for the external convex part to extend, the interlock piece is in transmission connection with a guide rail, the guide rail is connected with a handcart in a sliding way, and a through hole is formed in the guide rail and is used for the interlock piece to extend during rotation. A user operates the external convex part to achieve that the block body downwards slides relative to the shell, the interlock piece is further taken to rotate and extends out of the first through hole, and the handcart is limited to move on the guide rail. By the electrical cabinet, the safety during operation of the user is improved, the fact that the handcart cannot be operated when a grounding switch is switched on is conveniently realized, the interlock requirement is achieved, and the safety of an operator is ensured.

The invention discloses an automatic identifying device. The automatic identifying device comprises an identifying mechanism with an identifying piece (f) and a driving device which drives the identifying mechanism to move back and forth. The identifying mechanism further comprises a fixed base (e1) which is connected with the driving device and a movable base (e2) which is arranged on the fixed base (e1) in a linear back-and-forth moving mode. The identifying piece (f) is mounted on the movable base (e2), and a bias pressure part is mounted between the fixed base (e1) and the movable base (e2). The bias pressure of the bias pressure part acts on the movable base (e2), so that the movable base (e2) is made to have the tendency of moving in the identifying direction. According to the automatic identifying device, the impact of a seal on an object to be sealed in the sealing process can be buffered, so that the problem that the object to be sealed and the seal are damaged due to the fact that a seal mechanism directly and rigidly impacts the object to be sealed is solved; accordingly, the seal is prevented from being abraded, and the sealing quality can also be kept stable for a long time.

The invention discloses a visible ureterorenoscope negative-pressure stone-removing pressure-measuring expanding sheath assembly with marks. The visible ureterorenoscope negative-pressure stone-removing pressure-measuring expanding sheath assembly with the marks comprises a sheathing canal body, an expanding tube is selectively inserted into the sheathing canal body, a large-cavity channel and a small-cavity channel are formed in the sheathing canal body, the top of the sheathing canal body is provided with a sheathing canal connector, one side of the sheathing canal connector is provided with a pressure detection channel, and the small-cavity channel is communicated with the pressure detection channel. According to the visible ureterorenoscope negative-pressure stone-removing pressure-measuring expanding sheath assembly with the marks, the defects in the prior art can be overcome, and the operation safety and broken stone discharging smooth degree are improved.

The invention discloses a vertical movement inverted-hung type mechanical arm installation platform which is composed of a machine frame, a driving mechanism and a lifting assembly. A peripheral device is a mechanical arm. The driving mechanism and the lifting assembly are installed on the machine frame. The mechanical arm is installed below the lifting assembly. The lifting assembly drives the mechanical arm to move longitudinal under the drive of the driving mechanism. The vertical movement inverted-hung type mechanical arm installation platform is simple in overall structure, high in efficiency and convenient and flexible to use. The mechanical arm is installed on a base in an inverted hung mode, the working range is enlarged, the installation platform is particularly applicable to the mechanical arm with a joint having no self-locking ability, the mechanical arm can reach any point in the certain radius 360-degree range in the plane, and applicability and practicability of the whole mechanical arm device are improved.

The invention relates to a hydraulic synchronous control device for a fan-shaped section replacement device. The control device comprises a fan-shaped section replacement device execution mechanism, a controller and a double-proportional valve hydraulic synchronous control circuit. Closed-loop control is conducted on the double-proportional valve hydraulic synchronous control circuit through the controller to achieve synchronous movement of the fan-shaped section replacement device execution mechanism. The hydraulic synchronous control circuit mainly comprises a hydraulic control one-way valve, a pressure compensator, a proportional valve, an electromagnetic directional valve, a balance valve, a shuttle valve and a safety valve. The control device has the advantages that the swing angles of guiding swing arms on the left side and right side of the fan-shaped section replacement device are controlled synchronously through a double-proportional valve, so that the guiding swing arms can adapt to hoisting and positioning of different fan-shaped sections, hoisting, replacement and adjustment of different fan-shaped sections of a continuous casting machine can be achieved quickly and steadily, fan-shaped section replacement can be conducted safely, steadily and reliably, the automation level of fan-shaped section replacement is increased, and the control device is suitable for automatic control of fan-shaped section replacement devices of slab casters.

The invention discloses a real-time motor control device for the hitting speed of a die-casting machine. The real-time motor control device for the hitting speed of the die-casting machine comprises a cartridge valve deck, an ejector rod, a bearing seat, a bearing cap and a control motor, wherein the cartridge valve deck is arranged on an oil circuit board in the position of a cartridge valve of the die-casting machine, the output end of the ejector rod is connected with a hitting component of the die-casting machine, the output end of the bearing seat is connected with the input end of the ejector rod, the bearing cap is used for fixing the bearing seat, and the control motor is used for controlling the hitting speed of the die-casting machine. An inner cavity is formed in the cartridge valve deck and the bearing cap. An oil pipe is arranged in the cartridge valve deck, one end of the oil pipe is connected with a pressure oil tank in the cartridge valve, and the other end of the oil pipe is connected with the inner cavity. The oil pipe is used for allowing pressure oil to be guided therein, so that the pressure of the two ends of a piston arranged on the ejector rod is balanced. Through the design, the bearing seat can be rotated easily, and overload of the control motor is prevented; meanwhile, back-and-forth repeated control is more accurate, stress during starting is reduced, the response time is shortened accordingly, and accurate real-time control can be achieved through the cooperation of the real-time motor control device and a switching mechanism.

The invention belongs to the field of medical equipment and particularly relates to a computed tomography (CT) machine and a transporting device thereof. The transporting device is characterized in that the machine comprises a bottom plate and a perpendicular plate which is perpendicularly arranged at one end of the upper surface of the bottom plate; a first drive mechanism is arranged on the bottom plate; the first drive mechanism is connected with a retractable plate; a second drive mechanism is arranged on the retractable plate; and a bearing plate is arranged on the second drive mechanism. The invention provides the transporting device for transporting patients. The transporting device can stably complete the process of transferring a patient from one piece of equipment to the transporting device, thereby reducing manpower required in the patient transfer process, solving the problem that secondary injury possibly exists in the patient transporting process and improving safety in the patient transporting process.

The invention discloses a nonskid chain and an application method thereof. The nonskid chain comprises a steel chain part and a steel rope part, the steel chain part comprises a first chain, a plurality of second chains and at least one third chain. The steel rope part comprises a first steel rope and a plurality of second steel ropes. The first chain comprises a plurality of sections of the chains, and the multiple sections of the chains are connected with each other through a plurality of fasteners to form a strip-shaped chain. Two ends of the second chains are separately and evenly connected with the first chain and the third chains at intervals through connecting pieces, and an annular chain and an annular rope are formed by detachably connecting two ends of the first chain, the thirdchains and the first steel rope through connecting pieces along tires. The nonskid chain realizes effects of smooth and fuel saving in driving; the steel ropes are smoother than the chains due to thearrangement of the first steel rope and the second steel ropes on the inner sides of the tires, and the effect of non-scratching of the automobile suspension is realized.