116results about How to "Achieve relative movement" patented technology

The invention discloses a mechanical device used for scanning measurement of chromatographic Gamma. The mechanical device comprises a waste barrel rotating table, a rotating table moving assembly, a detector lifting platform assembly, a transmission source lifting platform assembly, a base, a high-purity germanium detector provided with a collimator and a transmission source provided with a shielding block, wherein the rotating table moving assembly, the detector lifting platform assembly and the transmission source platform assembly are all arranged on the base; the waste barrel rotating table, the high-purity germanium detector and the transmission source are arranged on the rotating table moving assembly, the detector lifting platform assembly and the transmission lifting platform assembly respectively; and the detector lifting platform assembly and the transmission lifting platform assembly are arranged at two sides of the waste barrel rotating table respectively. The mechanical device disclosed by the invention realizes the accurate lifting of the transmission source and the detector and rotation and translation of the waste barrel, can meet the measurement requirement when the detector and the transmission source are not positioned on the same layer under a special condition, and can ensure that the detector moves horizontally in a small range.

The invention discloses a rotatable lifting device for construction engineering, which relates to the technical field of construction industry equipment and aims to solve the problem in the prior art that a dangerous section of a hydraulic rod is easily broken due to stress concentration during the transfer process of building materials; it includes a hydraulic Rods, connecting rods, support rods, pillars, rotating discs, chassis and clamping devices for clamping construction materials, and also include lifting locking mechanisms, including pulley assemblies, wire ropes, winches, lead screws and for The driving assembly that drives the screw to rotate. The screw is fixedly connected to the winch and is threaded through the axis of the pillar vertically, and the rotation center line of the winch is perpendicular to the axis of the pillar. Tight on the winch. By implementing the technical solution, the gravity of the building material is dispersed at each stress point of the pulley assembly, avoiding the problem that the dangerous section of the hydraulic rod is easily broken due to stress concentration, and improving the safety factor.

The invention relates to a method for separating and purifying oligo-xylose by using a simulated moving bed. The method comprises the following steps of: performing preprocessing such as decolorization, deinoning, condensation and the like on feed liquor obtained by performing enzyme hydrolysis on feed solution, namely hemicellulose; filtering and deoxidizing the preprocessed hemicellulose hydrolysis liquid with high purity water for later use; feeding the preprocessed hemicellulose hydrolysis liquid into a chromatographic separation device of the simulated moving bed to perform separation so as to obtain oligo-xylose crude liquor which is rich in oligo-xylose components; and performing reduced pressure evaporation concentration or excipient spray drying on the oligo-xylose crude liquor obtained by the separation to obtain oligo-xylose syrup or powder. In the method, the chromatographic separation device of the simulated moving bed (SMB) is used to extract the oligo-xylose, a plurality of adsorption posts is connected in series to form a closed loop, the positions of the inlet and outlet of each strand of materials are changed by continuously switching valves, and the relative movement of solid and liquid phases is realized, so that different components are separated and extracted. The method not only has the advantage of simple absorption operation of a fixed bed but also has the continuous operation capability of the moving bed, so that the method is suitable for large-scaled industrialized production.

The invention discloses an ultrasonic scanning device, application thereof and a method and belongs to the field of ultrasonic testing. The ultrasonic scanning device comprises at least one pair of cylindrical rollers. Axes of each pair of cylindrical rollers are mutually parallel. Liquid for transmitting ultrasound is contained in each cylindrical roller. When the ultrasonic scanning device works, the pair of cylindrical rollers rotate around own axes, rotation directions are opposite and a to-be-detected object passes between the pair of cylindrical rollers, thereby receiving ultrasonic testing. The ultrasonic scanning device can be applied to the field of lithium ion battery testing. An internal defect and health state of a lithium ion battery can be obtained through obtaining of an ultrasonic image in a detection object. The device provided by the invention is simple in structure, is convenient for use and is low in cost and ingenious in design. A practical supplication effect in the field of the lithium ion battery testing is relatively good.

The invention discloses a seven-degree-of-freedom upper limb exoskeleton rehabilitation robot, and belongs to the technical field of rehabilitation mechanical equipment. The seven-degree-of-freedom upper limb exoskeleton rehabilitation robot comprises a supporting mechanism, a shoulder joint training mechanism, an upper arm adjusting mechanism, an elbow joint training mechanism, a wrist joint training mechanism and a wrist joint adjusting mechanism, wherein the supporting mechanism, the shoulder joint training mechanism, the upper arm adjusting mechanism, the elbow joint training mechanism, the wrist joint training mechanism and the wrist joint adjusting mechanism are connected in sequence. Through combined use of seven active degrees of freedom and three passive degrees of freedom, the training stability, comfort and accuracy are ensured, and the seven-degree-of-freedom upper limb exoskeleton rehabilitation robot can adapt to different users and is high in applicability.

The invention discloses a light-water coaxial follow-up laser shock peening device. According to the device, a follow-up absorption belt conveying mode is adopted, water with certain pressure is sprayed out through a water spraying device, the absorption belt is tightly attached to a workpiece, the absorption belt is conveyed while laser shock peening processing is carried out along with the rotation of a motor, and then the laser shock peening processing process for the surface of the workpiece can be completed. Due to the facts that the absorption belt is not attached to the surface of the workpiece, and the processed surface is smooth and free of dirt, the laser shock peening processing process can be completed without preprocessing and postprocessing performed, meanwhile, the problem that a water film is unstable is solved, and laser shock peening processing can be carried out at high efficiency. The device comprises a laser input unit, a focusing unit, a protection lens, a belt conveying unit and a sprayer unit. The invention discloses a light-water coaxial follow-up laser shock peening processing method adopting the device.

The invention discloses a winter cold rehydration production device comprising a tank body, a moving assembly, four sets of scraping assemblies, two sets of first discharge assemblies and two sets oflock latch assemblies, the tank body is horizontally provided with a partition plate in a clamping manner, the partition plate divides the tank body into an upper stirring chamber and a lower coolingchamber; the moving assembly comprises a moving frame and two first cylinders, each set of scraping assemblies comprises three first connecting rods, and the free ends of the first connecting rods arehorizontally connected with a long scraping plate; each set of first discharge assemblies includes a first chute, a connecting block, a baffle and a second cylinder; each set of lock latch assembliesincludes a receiving groove, two chutes, a slider and a wire rope; and each set of second discharge assemblies respectively includes a discharge plate and a third cylinder. The winter cold rehydration production device effectively prevents materials from sticking to the inner side wall of the upper stirring chamber by the upper and lower movement of the moving frame and the material scraping of the scraping plate, thereby reducing waste of the materials.

The invention mainly discloses a chair with a sliding device, which comprises a seat plate. The sliding device is arranged at the bottom of the seat plate; the lower end of the sliding device is connected with a regulating tray; the regulating tray is connected with an air pole and a foot stand; the sliding device consists of an upper sliding plate and a lower sliding plate; the lower sliding plate is provided with chutes; the seat plate is fixed at the upper end of the upper sliding plate and both side ends of the upper sliding plate are arranged in the chutes of the lower sliding plate, so that back-and-forth relative displacement of the seat plate and the foot stand is implemented and the problem of inconvenience in regulation on the distance between the seat plate and an office table of rotary chairs without sliding wheels is solved.

The invention discloses a cement mortar high-efficiency mixing device, which comprises a bottom plate, a material mixing bucket is arranged above the bottom plate, several rotating rods are fixedly installed on the surface of the stirring shaft, and several stirring rods are horizontally fixedly installed between the rotating rods; Extending horizontally to the left, a connecting plate is provided. A chute is horizontally opened on the connecting plate. A worm is coaxially fixed on the stirring shaft. gear, the second driven gear is meshed with the driving gear; the structure of the invention is ingenious, the stirring rod rotates and stirs the cement mortar in the material mixing barrel, which improves the mixing effect of the cement mortar; the material mixing barrel can be moved along the direction of the axis of the stirring shaft The left and right reciprocating motion not only promotes the left and right shaking of the cement mortar, but also enables the stirring rod to stir the cement mortar at different positions in the material mixing barrel, realizing the efficient mixing of the cement mortar.

The invention belongs to the technical field of automobile doors and windows, and particularly relates to an automobile sliding window. The automobile sliding window comprises a sliding glass, a fixedglass, a sealing piece and two sliding rails, wherein the sealing piece covers the periphery of the fixed glass, the fixed glass is provided with a ventilation window, the two sliding rails are detachably connected with the two opposite sides of the sealing piece correspondingly and are located on the inner side of the fixed glass, the two sliding rails are located on the two opposite sides of the ventilation window correspondingly and extend to the sides of the ventilation window, and the two opposite sides of the sliding glass are slidably installed in the two sliding rails correspondingly.The sealing piece of the automobile sliding window and the sliding rails can be assembled after independent injection molding of the sealing piece, so that during manufacturing, the sliding rails donot need to be positioned in a mold, and thus the manufacturing difficulty and the manufacturing cost are greatly reduced; and once the sliding rails are damaged, the sliding rails can be directly detached from the sealing piece to be replaced without replacing the whole automobile sliding window, and the maintenance and manufacturing cost is low.

The invention discloses a frequency doubling crystal holder in a high power solid laser. The frequency doubling crystal holder comprises a base and a frequency doubling crystal fixing block. The base comprises a bottom plate which is horizontally arranged. The upper surface of the bottom plate is vertically connected with at least three guide columns which are not in the same row. A support plate parallel to the bottom plate is arranged above the bottom plate. The support plate is in slidable sleeve joint with the guide columns through guide sleeves. The upper surface of the bottom plate is fixedly connected with two brackets. A rotating shaft parallel to the support plate is rotationally arranged between two brackets. The rotating shaft is located between the bottom plate and the support plate. At least one cam is fixedly arranged on the rotating shaft. The cam abuts against the bottom of the support plate. One end of the rotating shaft is connected with a drive motor. The frequency doubling crystal fixing block is fixedly connected with the upper surface of the support plate. According to the invention, relative movement of a frequency doubling crystal and the light path of a base frequency light is realized; the exposure time of the base frequency light on the same point of the frequency doubling crystal is reduced; and the service life of the frequency doubling crystal is prolonged.

The invention relates to the technical field of galvanized layer thickness control, in particular to a steel strip galvanized layer thickness control device. The steel strip galvanized layer thickness control device comprises supporting mechanisms, driving mechanisms, measuring mechanisms, air outlet mechanisms and galvanizing mechanisms, wherein the driving mechanisms are oppositely mounted on two sides of each supporting mechanism, the measuring mechanisms are in threaded connection to the tops of the two driving mechanisms, the air outlet mechanisms are oppositely mounted at one ends of the two measuring mechanisms, the distance between the two air outlet mechanisms is controlled through the driving mechanisms, molten zinc on strip steel molten zinc is blown to be thin, and redundant molten zinc is scraped back into the galvanizing mechanisms, so that the zinc layer with a certain thickness is formed without manual intervention, the thickness deviation of the zinc layer can be avoided, and the consistency, the stability and the yield of products are ensured. Each galvanizing mechanism is mounted on the inner side of the corresponding supporting mechanism, strip steel is galvanized through the galvanizing mechanisms, operation is simple, and comprehensive galvanizing is achieved. The opposite ends of the two air outlet mechanisms can be closed to prevent dust when not being used.

The invention discloses an anti-clogging septic tank. The anti-clogging septic tank comprises a septic tank body, wherein a sewage inlet pipe and a sewage outlet pipe are respectively fixed on and penetrate through two side walls of the septic tank body; the sewage inlet pipe is positioned at one end of the septic tank body, and penetrates through and is connected to the top wall of a crushing tank; a plurality of liquid outlet holes are formed in the bottom wall of the crushing tank; the same crushing shaft penetrates through two side walls of the crushing tank in a sliding manner; condensatecan be sheared by a blade when passing through a sheared edge and further the crushing effect is improved; a microbial solution can be sufficiently and uniformly mixed with the condensate, so that the degradation efficiency of microorganisms is improved, further the problem of clogging due to accumulation in the septic tank is avoided, the maintenance cost is greatly reduced and labor force and physical strength are greatly saved; the anti-clogging septic tank has high practicality.

The invention relates to the field of color steel tiles, in particular to a color steel tile. The color steel tile comprises a main body mechanism, a water flow groove, a fixing mechanism, a reinforcing mechanism and a locating mechanism. The ends, backing against push rods, of two driving rods move in opposite directions, and thus, abutting plates can abut against fixing plates; and the reinforcing mechanism can provide thrust against the outer wall of a convex tile while force is applied to the convex tile through protection plates, and the problems that the convex tile deforms to cause loosening of the protection plates, and a photovoltaic cell panel falls are avoided. The protection plates abut against the reinforcing mechanism, the fixing plates provide the thrust against the outer wall of the convex tile, and meanwhile, the locating mechanism slides downwards to be matched with the reinforcing mechanism in applying more force to the convex tile; and the convex tile is further prevented from deforming. In the dismounting process, the protection plates are loosened; the fixing plates are compressed by compressed spring and reset; two push pillars are driven to reset while the fixing plates reset, so that linkage is achieved, and dismounting can be conducted conveniently; and a limiting plug of an inverted-circular-truncated-cone-shaped structure is clamped into a groove while a pressing pillar slides downwards, so that sealing is achieved, and rainwater is prevented from entering a room.

The invention discloses a workpiece clamping device for mechanical agricultural machine tool manufacturing. The workpiece clamping device comprises a base, two supporting plates are fixedly connectedto the base, a transverse plate is fixedly connected to the two supporting plates, a rotating plate is fixedly arranged between the two supporting plates, and a clamping groove is formed in the middleof the rotating plate in a penetrating manner. Two threaded cylinders rotationally connected with the rotating plate are arranged on the rotating plate in a penetrating manner, the opposite ends of the two threaded cylinders both extend into the clamping groove, a clamping mechanism is arranged between the clamping groove and the two threaded cylinders, and the opposite ends of the two threaded cylinders penetrate through the supporting plates on the same sides and are rotationally connected with the supporting plates. The workpiece clamping device is reasonable in structure, under the condition that a workpiece is clamped, the clamped workpiece can be rotated, then welding work can be conveniently conducted on the workpiece, under the condition that clamping is achieved electrically, workpiece rotating can be achieved, the electric rotating manner and the manual rotating manner can be conveniently switched, and operation is easy and convenient.

The invention discloses an intelligent angle-adjusting electrically-operated mechanism comprising a display. The inner side of the display is detachably connected with one side of a mounting plate, the other side of the mounting plate is connected with a working box, the working box is internally provided with a driving device, the driving device is connected with a hollow sleeve through a rotating shaft, the hollow sleeve is internally provided with a telescopic structure, and the telescopic structure is connected with a U-shaped frame. The intelligent angle-adjusting electrically-operated mechanism is simple in structure; a linear servo motor and a driving servo motor are separately controlled by control software to rotate; the linear servo motor rotates to drive the screw to rotate, asthe screw is in threaded connection with a lower end cover, the relative movement of the screw and the lower end cover is realized, and the aim of adjusting the distance between the hollow sleeve andthe U-shaped frame and further changing the tilt angle of the display are achieved; and the driving servo motor rotate to drive the rotating shaft to rotate, the tilt angle of the display can be further changed, and the display can be rotated and tilted within a large range.

The invention belongs to the technical field of machining press-fitting equipment and discloses an engine connecting rod small-end copper bush press-fitting device. The copper bush press-fitting device comprises a machine frame. A mounting block is slidably connected to the machine frame. The bottom of the mounting block is provided with a first rack. One end of the machine frame is slidably connected with a clamping part. The clamping part comprises a sliding plate composed of a transverse plate and a vertical plate. Two supporting rods perpendicular to the vertical plate are arranged on thevertical plate. Clamping rods parallel to the vertical plate are hinged to the two supporting rods correspondingly. A clamping block is slidably connected between the two clamping rods. The bottom ofthe clamping block is provided with a first magnet. The bottom of the machine frame is provided with a first electromagnet. A first electric conducting plate is arranged on the electromagnet. The bottom of the transverse plate is provided with a first power supply. A second electric conducting plate is arranged on the first power supply. A second rack is arranged on the side, close to the mountingblock, of the vertical plate. Through the engine connecting rod small-end copper bush press-fitting device, the problem that the mounting efficiency is low due to the fact that a connecting rod and acopper bush are perpendicularly mounted just manually in the prior art is solved.

The invention relates to the technical field of pile planting, and provides a timber pile cutting mechanism. The timber pile cutting mechanism comprises a workbench, a movable frame, a first rotating disc, a second rotating disc, an annular part, a first clamp, a second clamp, a cutter and a linear driving device; the movable frame is movably arranged on the workbench; the first rotating disc is rotationally arranged on the movable frame, moves along with the movable frame and is provided with a first through hole; the second rotating disc is rotationally arranged on the workbench and is provided with a second through hole; the annular part is arranged on the movable frame and provided with a third through hole; the first clamp is arranged on the annular part in a sliding manner; the second clamp is arranged on the annular part in a sliding manner relative to the first clamp, is in a long strip shape and is located at the top of a third rotating disc; the cutter is rotationally arranged on the workbench and is obliquely arranged, a cutting edge of the cutter faces the second through hole in the top position, and the rotating axial direction of the cutter is the same as the axial direction of the second through hole; and the linear driving device is arranged on the workbench, and the movable frame is in driving connection with the linear driving device. Through the technical scheme, the problem of low cutting efficiency in the prior art is solved.

The invention discloses a double-movable-frame jig device for an automobile checking fixture, relates to the field of automobile checking fixtures, and mainly aims to solve the problem that an existing jig device for the automobile checking fixture is poor in adjusting capacity. The double-movable-frame jig device for the automobile checking fixture discloses comprises a workbench, a first slide rail, a first movable frame, a second movable frame, a first fixing plate, a second sliding rail, a linkage rod and a second fixing plate, a motor and a limiting plate. The first rotating shaft is arranged on the first movable frame; the first rotating shaft is rotationally connected with a first jig through a first connecting rod; the second movable frame is rotationally connected with a large steel pipe through a fourth rotating shaft; the large steel pipe is slidably connected with a small steel pipe, the small steel pipe is fixedly connected with a second jig, the bottom of the first fixingplate is provided with first teeth, the first teeth are rotatably connected with a first gear, a first sliding plate drives a second sliding plate to move through the linkage rod, and the adjustability of the automobile checking fixture jig device is improved.

The invention discloses a barbecue oven. The barbecue oven comprises a central baking oven, wherein a rotatable barbecue tool bracket and a rotatable charcoal fire bracket are arranged on an outer wall of the central baking oven; the barbecue tool bracket is arranged above the charcoal fire bracket. By arranging the rotatable barbecue tool bracket and the rotatable charcoal fire bracket, relative movement of the barbecue tool bracket and the charcoal fire bracket can be realized, so that distance change between a food material on the barbecue tool bracket and charcoal fire on the charcoal fire bracket is realized, and a heating temperature of the food material is adjustable.

The invention relates to the technical field of flexible OLED production. The invention discloses a rear-section laser manufacturing process integration device for a flexible OLED display panel. The device comprises a rack and a base arranged at the upper end of the rack; a support is arranged at the upper end of the base; the support is provided with four layers; the bottom layer of the support is vacant; a positioning jig is arranged on an X-axis linear module; an OLED display panel is loaded on the positioning jig; the positioning jig penetrates through the bottom layer of the support through the X-axis linear module; a first moving mechanism and a second moving mechanism are arranged on the left side and the right side of the support correspondingly; and a picosecond IR laser, a nanosecond UV laser and a picosecond UV laser are further arranged on the support. According to the invention, four functions of laser stripping of a glass substrate, laser cutting of OLED display panel glass, PI layer removing through laser, and scribing on the PI layer and the glass substrate are integrated in a flexible OLED display panel manufacturing process, so the automation degree is high, and multiple common functions are achieved through one device.

The invention discloses an aluminum profile cutting device. The aluminum profile cutting device comprises a vertical air cylinder, an adapter block, a motor and a cutting blade. The lower end of a telescopic rod of the vertical air cylinder is connected with the adapter block. The adapter block is connected with the motor. The motor is horizontally connected with one end of a rotation shaft, and the other end of the rotation shaft is vertically connected with the circle center of the cutting blade. The cutting device further comprises a protection cover, the protection cover can sleeve the cutting blade, and the protection cover can move relative to the cutting blade in the vertical direction. The cutting device is safe in usage, simple in structure and reasonable in design.

The invention discloses a throttling type killing manifold with a lifting base, and relates to the technical field of oil exploitation. The throttling type killing manifold comprises a killing manifold and a choke manifold, wherein the choke manifold is connected with the killing manifold; the lifting base is arranged at the bottom of the killing manifold; a support base is arranged below the lifting base; a plurality of limiting mechanisms are arranged between the support base and the lifting base; a mounting groove is arranged in the bottom of the lifting base; a connecting base is arrangedin the mounting groove, the connecting base is connected to the mounting groove through a clamping mechanism; two positioning blocks are fixedly connected to the support base; and a first screw and asecond screw are respectively arranged on two bearings. The throttling type killing manifold is reasonable in structure, capable of rapidly adjusting the height of the killing manifold, easy, convenient and rapid to operate, capable of meeting the requirements in actual use and high in working efficiency, meanwhile, the lifting base can be detached to be conveniently placed on the ground, and thesupport base and the killing manifold can be conveniently transported.

The invention relates to centering devices, in particular to a gas turbine axial and lateral simple centering device. The gas turbine axial and lateral simple centering device comprises an axial centering device and lateral centering devices and is characterized in that the axial centering device comprises a base, a connecting plate, a pull rod and nuts, the pull rod is mounted on the base and connected with the two symmetrical nuts, the connecting plate is located at the end of the pull rod, and the connecting plate is fixed to the small underframe crossbeam of a gas turbine, and the base ismounted on the large underframe of the gas turbine; each lateral centering device comprises a mounting seat and a bolt which are connected in a threaded manner, and the mounting seat is fixed at the corresponding corner of the large underframe of the gas turbine. The gas turbine axial and lateral simple centering device has the advantages that centering between the gas turbine and loading equipment driven by the gas turbine during the remounting of the maintained gas turbine can be achieved, the device can be directly and conveniently mounted on the large underframe of the gas turbine, centering can be achieved only by adjusting the adjusting nuts, and the device is convenient to operate, simple in structure, safe and reliable, and stable to operate.

The invention discloses a lifting mechanism for railway locomotive wheels, which comprises a base, a sliding seat is slidably connected to the base, an adjustment mechanism is arranged between the sliding seat and the base, and a sliding seat is provided on the sliding seat. Two sliding blocks are slidably connected in the sliding groove, and a servo motor is fixedly connected to the sliding seat; the limit mechanism includes a U-shaped groove arranged in the first U-shaped support plate and the second U-shaped support plate A reset plate is slidably connected in the U-shaped groove, a plurality of first springs are fixedly connected between the reset plate and the inner bottom of the U-shaped groove, and two guide columns are fixedly connected to the upper end of the reset plate. The invention has a reasonable structure, not only can stably support the wheel set, but also can stably clamp the axle to ensure its stability after being supported, without manual operation by the staff, greatly reducing the workload of the staff, and More security.

The invention discloses an aluminum profile cutting device. The aluminum profile cutting device comprises a vertical air cylinder, an adapter block, a motor and a cutting blade. The lower end of a telescopic rod of the vertical air cylinder is connected with the adapter block. The adapter block is connected with the motor. The motor is horizontally connected with one end of a rotation shaft, and the other end of the rotation shaft is vertically connected with the circle center of the cutting blade. The cutting device further comprises a protection cover, the protection cover can sleeve the cutting blade, and the protection cover can move relative to the cutting blade in the vertical direction. The cutting device is safe in usage, simple in structure and reasonable in design.

The invention relates to the field of induction cookers, in particular to a household induction cooker. The household induction cooker comprises bases, a main body mechanism, a heat conducting plate,a supporting mechanism, supporting plates, supporting columns, sliding columns, clamping grooves, a limiting mechanism, shifting plates, driving plates and clamping plates. Tableware with the arc-shaped bottom is placed on the surface of the heat conducting plate, the shifting plates on the side faces of the two supporting plates then rotate clockwise, the driving plates rotate, the two clamping plates in the two supporting plates move relatively, the two sets of clamping plates slide out of the clamping grooves in the side walls of the sliding columns, and the two supporting plates move relatively. When the side walls, which are opposite, of the two supporting plates abut against the arc-shaped tableware, the shifting plates are loosened, so that the two clamping plates are clamped with the clamping grooves in the side walls of the two sliding columns to fix the supporting plates. At the moment, the two supporting plates abut against the tableware with the arc-shaped bottom to protectthe tableware, the situation that a tableware body shakes and food overflows to the surface of the induction cooker body due to boiling of the food in the tableware body is avoided when the tablewareof an arc-shaped structure is heated.

The invention relates to a method for separating and purifying xylose and arabinose from hemicellulose acid hydrolysis liquid. The method comprises the following separating and purifying steps of: (1) carrying out electrodialysis and membrane filtration concentrate pretreatment on hemicellulose acid hydrolysis liquid directly obtained by adopting acid hydrolysis, deoxidizing and filtering for later use by adopting high-purity water; (2) putting the hemicellulose acid hydrolysis liquid after pretreatment into a simulated moving bed chromatography separating device and carrying out separation to obtain two discharging liquids; and (3) concentrating, cooling and crystallizing the two discharging liquids by adopting a multi-effect falling film evaporator to obtain xylose and arabinose products. In the invention, monosaccharide is extracted by adopting the simulated moving bed chromatography separation device (SSMB), a plurality of adsorption columns are serially connected into a closed loop, and inlet and outlet positions of all portions of materials can be changed by continuously switching valves, therefore, the relative motion between solid phase and liquid phase is realized, and the separation and the extraction among different components are carried out. The invention not only has the advantages of simple fixed bed adsorption operation, but also has the continuous operation capacity of a moving bed and is suitable for large-scale industrial production.