89results about How to "Compact and flexible" patented technology

A compressed prefix tree data structure is provided that allows large prefix trees and Virtual Private Network (VPN) trees to be placed in external memory, while minimizing the number of memory reads needed to reach a result. The compressed prefix tree data structure represents one or more bonsai trees, where each bonsai tree is a portion of a prefix tree containing two or more nodes that can be coded into a single data word (codeword). Each codeword is stored in a portion of the external memory (e.g., 16 bytes of DRAM), and retrieved as a unit for processing. Thus, each external DRAM call can retrieve multiple nodes of a prefix tree, reducing the time required for traversing the prefix tree.

Multiple-refrigeration Middle-delivery aerial condenser belongs to thermodynamic equipment technology domain. It composes of multi stages, and every stage is connected by the channels; every stage has two flow stages in which the steam floats to opposite direction; the air input is connected with the first channel , and the first channel is connected with the second channel by a row of parallel distribution heat exchange tube of the first stage; the second channel is connected with the heat exchange tube of next stage; apostrophe ,until get to the last channel; there are fins set out of the heat exchange tube; the shell is set out of the heat exchange tube and fins. The steam is put into the heat exchange tube of the first stage to refrigerate through the steam input and the first channel, and the air-liquid mixture flows into channel, and then the liquid and the air are separated; the steam gets into the heat exchange tube of next stage. This invention is suitable for large power engineering refrigeration, and it has efficient condensation capacity and large coefficient of heat transmission; the heat transfer area of the equipment is made use of sufficiently and efficiently; the fabric is flexible and smart, the applicability of the space is high.

The invention provides a lower limb assisting and training device which comprises a thigh moving mechanism and a calf moving mechanism, wherein the thigh moving mechanism is a two-degree-of-freedom spatial moving mechanism; a thigh support and a fixing part are arranged on the thigh moving mechanism; a calf support and a fixing part are arranged on the calf moving mechanism. The lower limb assisting and training device is simple in structure, and can be conveniently mounted to another rehabilitation and fitness training instrument, a chair, a massage chair and a wheelchair. The lower limb assisting and training device is wide in application range, and can be used for realizing rehabilitation training and exercising of a lower limb in a three-dimensional space. The lower limb assisting and training device is also a power assisting device, and can drive a leg to move and play the role of power assisting. The lower limb assisting and training device has various rehabilitation training modes; during use, two sets of the lower limb assisting and training devices are symmetrically arranged beside the left leg and the right leg of a patient, and synchronous/asynchronous training can be realized.

The invention discloses lower limb rehabilitation training equipment for lying, standing and sitting postures. The training equipment comprises a seat and a lower limb rehabilitation training device, herein the seat comprises a support frame, a seat cushion structure and telescopic rods which are connected between the support frame and the seat cushion structure and are used for driving the seat cushion structure to ascend and descend; and the lower limb rehabilitation training device is arranged on the seat cushion structure. According to the lower limb rehabilitation training equipment provided by the invention, a user sits on the seat, with lower limbs tied to the lower limb rehabilitation training device by virtue of various supporting and fixing parts, and then lower limb training can be comfortably conducted under the control of the lower limb rehabilitation training device. The training equipment provided by the invention is broad in application scope and is capable of achieving limb rehabilitation training and exercise under various postures including the lying, standing and sitting postures.

The invention discloses a comprehensive calibration device of a linear displacement sensor. The device comprises a stand, a table plate, a precision ball screw assembly, an assembling slide table, a linear displacement sensor clamp, a laser interferometer, a door frame interferoscope installing base, a host computer, a lower computer, a servo controller and a servo motor, the host computer controls the precision ball screw assembly to move in a linear manner with the combination of a related calibration standard according to the category of a calibrated displacement sensor, one end of the linear displacement sensor clamp is arranged above the assembling slide table with multi-dimensional movement, the other end is arranged on a slide block base above the precision ball screw assembly according to the requirement so that linear movement of the calibrated linear displacement sensor is driven, and the laser interferometer measures the disablement of the slide block on the precision ball screw assembly in real time and compares the displacement of the slide block with the displacement of the calibrated linear displacement sensor to form a calibration result. The device is in accordancewith the Abbe principle and has characteristics of high precision, intelligence, high efficiency, easy conveying, and convenient installation, and the calibration requirement of the linear displacement sensors of various structures can be satisfied.

The invention discloses a health training robot. The health training robot comprises thigh exercising mechanisms, shank exercising mechanisms and foot exercising mechanisms which are sequentially serially connected, wherein the thigh exercising mechanisms and the foot exercising mechanisms are three-freedom-degree parallel connection mechanisms; thigh support and fixing parts are connected between the thigh exercising mechanisms and the shank exercising mechanisms, shank support and fixing parts are connected between the shank exercising mechanisms and the foot exercising mechanisms, and stepping and fixing parts are connected to the front ends of the foot exercising mechanisms. The health training robot is simple and compact in structure, wide in application range, capable of being connected to other health and exercising instruments, applicable to lower limb health training and exercising, and capable of achieving health training of three-dimensional exercising.

The invention discloses a foldable and orbital transfer upper and lower limb coordination exercise training chair which comprises a seat, a transmission device arranged at the lower part of the seat, and a machine frame arranged on the two sides of the seat, wherein the two sides of the transmission device are provided with respective protruding driving shafts and auxiliary shafts, one end of the crank of each of the seven-bar mechanisms on the two sides of the seat is hinged with one driving shaft to form a rotation pair, the other end of the crank is hinged with the head end of a first connecting rod to form a rotation pair, the tail end of the first connecting rod is hinged with the tail end of a second connecting rod to form a rotation pair, the tail end of the second connecting rod is hinged with the head end of a side link to form a rotation pair, the tail end of the side link is hinged with the auxiliary shaft to form a rotation pair, one end of a third connecting rod is hinged with the first connecting rod to form a rotation pair, the other end of the third connecting rod is hinged with the bottom end of a rocking rod to form a rotation pair, and the middle of the rocking rod is hinged with the machine frame to form a rotation pair; and a leg support is mounted on the first connecting rod or the second connecting rod, and a handle is mounted at the upper end of the rocking rod. The foldable and orbital transfer upper and lower limb coordination exercise training chair has a simple and compact structure and a wide application scope.

The invention relates to a display for railway vehicles. The display includes a display circuit board and a main board, and the main board is connected to the display circuit board through a bus; the display circuit board includes LED row and column drive circuits and 9216 surface-mounted LEDs High-brightness light-emitting diodes, LED row and column drive circuits adopt high-power circuits, which can drive ≤300 LEDs at the same time, and can adjust the brightness of ≤256 levels through the program; the main board includes power circuit boards, communication circuit boards and microprocessor circuit boards Among them, the power supply circuit board converts the DC input into 3.3V power supply for internal circuits, and the DC input range can reach 66V-154V. The microprocessor circuit board adopts ARM microprocessor, and the code includes bootloader and executable program. Online upgrade executable program through bootloader. The invention has the advantages of simple and reasonable structure, wide working voltage range, no damage to the bus due to the protection function, and diverse and reliable communication modes.

The invention relates to a manipulator technology, and provides a wrist rotating clamp structure for a hydraulic manipulator. The structure comprises a linear oil cylinder, a micro hydraulic motor, aspeed reducing mechanism and a pawl; the linear oil cylinder is arranged by adopting a rear mode; the micro hydraulic motor and the speed reducing mechanism are positioned between the linear oil cylinder and the pawl; an output shaft of the micro hydraulic motor is connected to the speed reducing mechanism, and is vertically staggered with a piston rod of the linear oil cylinder; a worm wheel output shaft of the speed reducing mechanism is of a hollow structure; the piston rod of the linear oil cylinder is connected to a driving mechanism of the pawl after penetrating through the worm wheel output shaft, and drives opening or closing thereof; and the micro hydraulic motor drives the pawl to realize forward-reverse rotation through the speed reducing mechanism. The structure is simple in structure, low in technical difficulty, high in reliability, excellent in maintainability and economy, easy to realize, high in speed reducing ratio, high in wrist rotating torque and low in lowest stable rotating speed, allows staggered arrangement of the hydraulic motor and the pawl to achieve more compact and flexible structure, and has self-locking characteristics on a worm wheel and a worm rod.

The invention relates to a mobile payment device convenient and reliable for use based on face recognition. The mobile payment device comprises a bottom plate, a main body, a protection mechanism andtwo watchstraps. The device comprises a driving module, a protection plate, a hinge module, and two transmission modules; the transmission module comprises a rotating shaft, a first bevel gear, a movable block and a strut; a notch is formed on the main body, a display mechanism is arranged in the notch, and the display mechanism comprises a display screen, a direction-adjusting module, a lifting plate and a lifting module; the direction-adjusting module comprises a support block, a steel ball, a support rod and a plurality of direction-adjusting units; the direction-adjusting unit comprises anabutment rod, a magnetic board and an electromagnet; the mobile payment device convenient and reliable for use based on face recognition drives the protection plate to rotate through a protection mechanism, thereby facilitating the protection plate to cover above the main body to protect the display screen, not only that, the angle of the display screen is regulated through a display mechanism, so that display screen directly faces a code scanner to conveniently perform the scanning payment, the use of the equipment is more convenient, and the practicability of the equipment is improved.

The invention provides a prism coupling type wedge-shaped plane waveguide optical device which comprises a display light source, a collimating lens, a coupling prism, a planar wedge-shaped substrate and a prism positioning component, wherein the display light source is used for emitting display optical waves for displaying the needed image; the collimating lens is used for collimating the optical waves emitted by the light source; the coupling prism is used for coupling the collimated optical waves into a planar waveguide substrate; the planar wedge-shaped substrate is used for performing total reflection propagation on the coupled optical waves, and the light rays are coupled to an output substrate by utilizing a wedge-shaped structure; and the prism positioning component is used for adjusting the space distribution of optical fibers. The prism coupling type wedge-shaped plane waveguide optical device disclosed by the invention has the characteristics of simple manufacturing process, compact and flexible structure, large view field and high optical wave coupling efficiency, can be used for wearable display and also can be applied to the fields of expanded illumination, automobile navigation display and mobile phone display.

The invention relates to the technical field of household appliance accessories, and discloses a support and a TV PAD applying the support. The support comprises a claw-shaped support main body, the support main body is provided with a concave part which is matched with the shape of a display device, a first protrusion which buckles the display device downwardly is arranged on the upper edge of the concave part, a second protrusion which buckles the display device upwardly is arranged on the lower edge of the concave part, a support part which can rotate and can be locked at any position on a rotation track of the support main body is arranged on the back of the support main body, and a rotary part which is locked with the support part on the support, can rotate on a base and can be locked at any position on the rotation track is arranged on the front of the base. The support can be used independently and also can be combined with other parts, and thus the TV PAD can be located at multiple angles.

The invention discloses an adjustable-trajectory limb health training device with a sliding pair. The adjustable-trajectory limb health training device with the sliding pair comprises a crank, a first connecting rod, a second connecting rod, a sliding block, a guide rail, a rack and a support, wherein one end of the crank is hinged to the rack to form a revolute pair; the other end of the crank is hinged to the first end of the first connecting rod to form a revolute pair; the tail end of the first connecting rod is hinged to the head end of the second connecting rod to form a revolute pair; the tail end of the second connecting rod is hinged to the sliding block to form a revolute pair; the sliding block and the guide rail form a sliding pair; the guide rail is fixedly arranged on the rack; the support is installed on the first connecting rod or the second connecting rod. The adjustable-trajectory limb health training device with the sliding pair is a variable-position limb health training device with the adjustable movement mode, which has the advantages of simple and compact structure and wide application range, can be installed on other rehabilitation and fitness machines and can be applied to the rehabilitation and the fitness of the upper/lower limb.

The invention provides a multi-station anchor rod system. The multi-station anchor rod system comprises a double-rail main beam, an anchor rod propelling device, a slewing bearing, an anchor rod warehouse, a drilling device, a grouting device and a propelling system, wherein the double-rail main beam is rotationally connected with the slewing bearing through a rotating mechanism, the anchor rod warehouse is arranged on the slewing bearing, the double-rail main beam comprises a first rail and a second rail which are arranged in the same direction, the first rail and the second rail are arranged on the two opposite sides of the double-rail main beam, and the anchor rod propelling device and the drilling device are arranged on the first rail and the second rail in a sliding mode respectively; the propelling system and the grouting device are arranged on the other two opposite sides of the double-rail main beam; and the propelling system comprises a pulley mechanism and a propelling switching device, the pulley mechanism is used for driving the anchor rod propelling device and the drilling device, and the propelling switching device is used for realizing alternate sliding of the anchor rod propelling device and the drilling device. The drilling device, the anchor rod propelling device and the grouting device are integrated through the structural form of the double-rail main beam, and the structure is flexible and compact.

The invention discloses an upper limb rehabilitation training device. The upper limb rehabilitation training device comprises a support, a frame and an upper limb training device, wherein the frame isconnected to the support in an angle-adjustable manner, and the upper limb training device is connected to the frame and used for driving the upper limb to perform exercises. The upper limb rehabilitation training device has the advantages that the upper limb training device is combined with the support, and multi-posture upper limb rehabilitation training such as standing upper limb rehabilitation training, sitting upper limb rehabilitation training and lying upper limb rehabilitation training can be achieved due to the fact the frame is angle-adjustable.

The invention discloses a real-time measurable multi-pose fitness training robot which comprises lower-limb training machines, an adjusting unit and a real-time measurable lower-limb training aid. The adjusting unit comprises an angle adjustment mechanism and two horizontal motion mechanisms driving the angle adjustment mechanism to move horizontally; each horizontal motion mechanism is correspondingly provided with the angle adjustment mechanism and the lower-limb training machine; the front end of an upper aid support is hinged to the upper end of a lower aid support to form a revolute pair, the rear end of the upper aid support is hinged to a seat, and the lower end of the lower aid support is hinged to a pedal; a knee angle sensor is arranged at the position of the hinged point of the upper aid support and the lower aid support, and a hip joint angle sensor is arranged at the position of the hinged point of the upper aid support and the seat. By the arrangement, different poses can be adjusted, and a user can perform synchronous/asynchronous programming training of both legs under different poses.

The invention relates to a linear polarization acousto-optic modulator Q-switched optical fiber laser with single end coupled with optical fiber which sequentially comprises a laser diode pump source, a pump protector, a pump coupler, an optical fiber grating, a double-clad doped polarization maintaining optical fiber, an optical fiber port coupling lens, an acousto-optic modulator and a plane mirror. The single-end optical fiber-coupled linear polarization acousto-optic modulator Q-switched optical fiber laser has the characteristics of full-optical fiber modular structuring, adjustable high repetition rate, output of linearly polarized light pulse with narrow pulse width and narrow line width, compact structure, small volume, good stability, strong practicality and great application prospect.

The invention relates to a driving axle of a crawler loader. The driving axle comprises a half shaft, a bearing, a half shaft pipe sleeve, a wheel hub, an axle casing and a differential mechanism, wherein the half shaft is arranged in a main hole of the wheel hub, the half shaft pipe sleeve is sheathed on the half shaft, one end of the half shaft is connected with the wheel hub, and the other end of the half shaft is connected with the differential mechanism. The driving axle solves the problems of complicated structure, installation difficulty, small force and the like of the original driving system of the crawler loader, and meanwhile, a transfer case is omitted for the crawler loader, so the structure is compacted, and the cost is reduced.

The invention relates to an unmanned aerial vehicle undercarriage with a double damping function. The unmanned aerial vehicle undercarriage comprises a delta parallel mechanism, a battery box and a damping undercarriage, wherein the battery box is located at the middle of the delta parallel mechanism; the damping undercarriage is located under the delta parallel mechanism; the damping undercarriage is fixedly connected with the delta parallel mechanism. The unmanned aerial vehicle undercarriage has a double damping effect; the damping effect is obvious and effective; the vibration generated between the ground and the unmanned aerial vehicle while landing is reduced; the damage to the body of the unmanned aerial vehicle when the unmanned aerial vehicle lands is reduced; the delta parallel mechanism which has the advantages of compact and flexible structure, high moving stability and excellent damping property is adopted, so that the vibration generated between the ground and the unmanned aerial vehicle while landing is reduced, the displacement caused by recoil force when the unmanned aerial vehicle is in contact with the ground is made up and the safety and the stability when the unmanned aerial vehicle lands are promoted.

The invention discloses a miniature high-isolation microwave double-frequency power divider. The miniature high-isolation microwave double-frequency power divider comprises an input port, a coupling wire, an isolation network, a first transmission wire, a second transmission wire, a first output port and a second output port. The input port is connected with the first transmission wire and the second transmission wire through the coupling wire. The first transmission wire and the second transmission wire are respectively connected with the first output port and the second output port in correspondence. The isolation network is arranged between the coupling wire and the first transmission wire, the second transmission wire. By adopting the tail non-isolation network of the microwave double-frequency power divider, the size of the power divider and the coupling effect among output ends are effectively reduced, the isolation degree is improved, the circuit structure is compact, the design method is flexible and various, and the practical application range of the conventional microwave double-frequency power divider is greatly expanded.