109results about How to "Reliable limit" patented technology

The invention relates to the technical field of access authority, in particular to an authentication method of a data service interface. According to the method, time periods are divided according to the access number at an interface to obtain analysis time periods, abnormal time periods are determined by analyzing access changes in the time periods and user access duration conditions, and hostile attack segments are screened out by combining similar distribution conditions of other time periods; obtaining an association index through the similar condition between analysis time periods between interfaces and the distribution of hostile attack segments; according to the association index of the access interface of the user on the time sequence and the access abnormity possibility, combining the access quantity to obtain the behavior abnormity degree and determining an abnormal user; and performing interface authorization limitation based on the behavior abnormality of the abnormal user. According to the method, the malicious attack part is screened based on the access change among multiple time periods, and the association relationship among the interfaces is combined, so that the user interface access behavior abnormity analysis is more accurate, the authority is limited according to the behavior abnormity condition, and the authorization limitation of the interface is safer and more reliable.

The utility model discloses a thermal printer, comprising a paper cabin used for accommodating a paper roll; the at least one limiting plate is arranged in the paper bin and can reciprocate in the axial direction of the paper bin; the locking mechanism is connected with the limiting plate and used for locking the limiting plate in the axial direction of the paper bin. The thermal printer has the advantages of being simple and reliable in limiting structure and convenient to use.

The unbalance loading type multi-station mechanical press comprises a first supporting frame, a rotary table is rotatably installed on the first supporting frame, a rotation driving mechanism used for driving the rotary table to rotate is arranged on the first supporting frame, and the rotary table is sequentially provided with a feeding station, a detecting station, a machining station and a discharging station in the rotating direction; and the rotary table is provided with mounting ports which are circumferentially distributed. Through the arrangement of the rotary table, the carrier and other structures, the machining efficiency can be better improved through the multi-station operation mode, and the automation degree is high; the supporting mechanism is arranged and can work based on a lifting driving motor to drive a lifting adjusting screw rod to rotate, and then the lifting carrying table is controlled to ascend and descend under the guiding of a guiding base, so that a positioning block is better supported, and the pressure output mechanism works conveniently; in addition, due to the fact that the height of the supporting mechanism is adjustable and the carrier can move up and down, the pressing position of the pressure output mechanism can be well controlled, and therefore different production requirements can be met.

The shoulder joint bolster comprises a bridle and a bolster body, the bridle comprises a length-adjustable first connecting band, a length-adjustable second connecting band, a length-adjustable shoulder and neck bridle and a length-adjustable armpit bridle, one end of the first connecting band is fixedly connected with one end of the shoulder and neck bridle and one end of the armpit bridle, and the other end of the first connecting band is fixedly connected with the other end of the second connecting band. One end of the second connecting band is fixedly connected with the other end of the shoulder and neck binding band and the other end of the oxter binding band, the other end of the first connecting band penetrates through the anti-skid lock catch to be connected with the plug, and one side of the throw pillow is fixedly connected with a socket matched with the plug. According to the utility model, the armpit bridles are arranged, and the armpit bridles provide downward force for the shoulder and neck bridles, so that the shoulder and neck bridles are limited to move, limit and restrain the shoulder and neck bridles, the shoulder and neck bridles are far away from the neck, and the neck skin is prevented from being damaged by friction; the length of the armpit bridles can be adjusted, the shoulder and neck bridles can adapt to people of different physiques, the moving range of the shoulder and neck bridles can be adjusted, and neck skin is prevented from being rubbed and damaged under the condition that the patient feels comfortable in use.

The invention relates to the technical field of mechanism design, and discloses a hard disk frame module and a server, the hard disk frame module comprises a hard disk frame, the hard disk frame is provided with a hinge end and a free end, the hinge end is used for being rotatably connected with the side wall of a case, and the hard disk frame has a first state in which the free end is turned up relative to the case; in the second state, the free end is arranged in the case; the handle is rotatably arranged at the free end of the hard disk frame, the handle is provided with a first abutting part, the bottom wall of the case and / or the hard disk frame module further comprises a bottom support, and when the first abutting part abuts against the bottom support, the hard disk frame is in a first state. According to the hard disk frame module provided by the embodiment of the invention, devices such as a cable, a plug-in card and a radiator below the hard disk frame module can be maintained under the condition that the hard disk frame does not need to be disassembled, and the defect that in the related technology, the hard disk frame can only be overturned within a small angle range and cannot be overturned can be overcome. And an operator cannot conveniently maintain components such as a mainboard at the bottom of the hard disk frame.

The invention discloses a safe operation tubular column for a carbon dioxide injection well and an operation method, a tubing hanger is hung at the upper end of a casing head, a load test short section is connected below the tubing hanger, and the load test short section is sequentially provided with a sliding sleeve valve, an upper centralizer, a releasing packer, a lower centralizer, a gas injection valve, a tail short section and a screwed plug towards the lower tubular column. After the pipe column enters a well, the annulus protection fluid is positively injected for fluid replacement; a constant-pressure valve ball is put in, and the sealing performance is checked through step-by-step positive pressure; a tubing hanger is seated after pressure relief; the releasing packer is set through positive pressure, then pressure is continuously increased to break the valve seat thin-wall section of the constant-pressure valve seat, and positive injection communication of the tubular column is achieved; and then water is squeezed forwards, after the sealing performance of the packer is verified, a wellhead is installed and connected with a ground process, carbon dioxide is injected forwards, and soaking is conducted after the carbon dioxide reaches the set gas injection amount. The tubular column does not overflow in the process of descending into a well, after positive replacement, a ball is thrown to press and set a packer, a shaft is protected, dirt deposition is prevented, the risk of breakage and falling of the tubular column is completely eradicated, and the operation process is safe and controllable.

The invention discloses a five-degree-of-freedom permanent magnet biased magnetic suspension blood pump which comprises a pump shell, a rotor impeller, a magnetic suspension bearing and a motor used for driving the rotor impeller to rotate and do work, the magnetic suspension bearing comprises a bearing stator and a bearing rotor, and the bearing stator is fixed in an inlet pipe; the stator comprises an annular stator core and stator magnetic rings distributed at the two axial ends of the stator core, a plurality of first stator teeth are arranged on the inner wall of the stator core in the radial direction, and each first stator tooth is wound with a first coil; the bearing rotor is fixed in the pump rotor, the bearing rotor comprises a rotor iron core, rotor teeth are arranged on the outer circumferential surface of the rotor iron core, and the multiple first stator teeth are arranged opposite to the rotor teeth in the radial direction; the stator magnetic rings located at the two axial ends of the stator iron core are magnetized in the axial direction, the magnetizing directions are opposite, and closed magnetic loops can be formed between the stator magnetic rings and the stator iron core and between the stator magnetic rings and the rotor iron core. Five-degree-of-freedom suspension control can be achieved, the size is small, and power consumption is low.

The utility model discloses a guide plate mounting structure of a range hood, which comprises an exhaust fume collecting hood provided with an air inlet and a first mounting surface; the flow guide plate is arranged below the air inlet and provided with a first end and a second end which are oppositely arranged, and the first end is detachably connected with the first mounting surface through a hook assembly; the hook assembly comprises a hook and a fixing base, the fixing base is installed on the first installation face, a limiting part and a clamping groove with an upward opening are arranged on the face, away from the first installation face, of the fixing base in a protruding mode, the limiting part is located above the clamping groove, the hook is installed at the first end, and the fixing base is installed at the second end. And the free end is inserted into the clamping groove and abuts against the bottom of the limiting part or is in clearance fit with the bottom of the limiting part. The guide plate installation structure is simple in structure, the guide plate can be stably and reliably hung on the exhaust fume collecting hood, it is ensured that the guide plate cannot be automatically separated from the exhaust fume collecting hood, and meanwhile the guide plate can be prevented from further rotating upwards to scratch the exhaust fume collecting hood.

The invention provides a stator core, a plastic package stator assembly, a manufacturing method of the plastic package stator assembly, a motor and an air conditioner, the stator core comprises two semi-circular iron core section split bodies, and the two semi-circular iron core section split bodies are respectively provided with assembling surfaces which are attached to each other to form a whole circle. The assembling surfaces of the two semicircular iron core section split bodies are spliced through a transverse sliding limiting structure, the transverse sliding limiting structure is located in the middle area of the axial length of each semicircular iron core section split body, and the sliding insertion direction of the transverse sliding limiting structure is the first diameter direction of the stator iron core. According to the stator assembly, more reliable limiting in the axial direction and the radial direction can be achieved after the two semicircular iron core sections are spliced in a split mode, then radial dislocation and deviation of the stator iron core due to impact of injection molding materials in the subsequent plastic packaging process can be prevented, the concentricity of the stator assembly is improved, and operation noise of a motor can be lowered.

The utility model relates to the technical field of oil cylinder manufacturing, and provides an oil cylinder welding positioning tool which comprises a bottom plate. A positioning reference seat and at least two supporting plates which are arranged at intervals are arranged on the bottom plate; the supporting plates are provided with first positioning grooves, the groove opening directions of the first positioning grooves face upwards, and the first positioning grooves of any two supporting plates are mutually aligned in the axial direction. The positioning reference seat is arranged on one side of the supporting plate and provided with a positioning pin, and the positioning pin is perpendicular to the axial direction. Under the condition that the cylinder barrel structure is positioned on the oil cylinder welding positioning tool, the axial direction is parallel to the length direction of the cylinder barrel structure, the cylinder barrel structure is supported in the first positioning groove, and the positioning pin is inserted into an oil nozzle of the cylinder barrel structure. According to the scheme, the welding precision and efficiency in the oil cylinder production process can be improved by reducing the positioning difficulty of the cylinder barrel structure.

The invention relates to a double-clamp-spring locking structure, a pipeline connecting device and a dismounting and mounting method.The double-clamp-spring locking structure comprises a pipe fitting, the pipe fitting is provided with a plurality of connectors which are communicated with one another, each connector is correspondingly connected with a pipeline, the outer wall of each pipeline is provided with a clamping groove A, each clamping groove A is provided with a clamp spring A, and the inner wall of each connector is provided with a limiting groove and a clamping groove B; the clamping groove A is provided with a clamping spring A, the limiting groove limits the clamping spring A to move inwards, the clamping groove B is provided with a clamping spring B, the clamping spring B limits the clamping spring A to move outwards, the pipe fitting is provided with a set screw, and the set screw locks the pipeline. The pipeline connecting device comprises the double-clamp-spring locking structure, a sealing groove is formed in the inner wall of the connector, a sealing ring is arranged on the sealing groove, and the sealing ring is used for sealing under the action of liquid. An existing single-clamp-spring design thought is overturned, a double-clamp-spring locking structure is innovatively designed, pipeline locking connection can be achieved only through one screw in cooperation with the double-clamp-spring locking structure, and the double-clamp-spring locking structure has the advantages of being reasonable in structural design, high in machining efficiency, convenient and efficient to install, reliable in locking and the like.

The utility model discloses a forward scattering visibility meter for ice cloud distribution analysis, relates to the technical field of meteorological monitoring equipment, and is used for solving the problem that a conventional bracket is difficult to provide stable support for the forward scattering visibility meter. The forward scattering visibility meter for ice cloud distribution analysis comprises a forward scattering visibility meter body and a support used for supporting the visibility meter body, the support comprises an alloy truss and a height adjusting mechanism, the height adjusting mechanism is arranged on the upper side of the alloy truss, and the forward scattering visibility meter is arranged on the height adjusting mechanism. The device further comprises a supporting base, a metal sleeve, a fixing column and a bottom plate. The supporting seat adopts a concrete structure; the metal sleeves are partially fixed in the supporting seat, the number of the metal sleeves is at least three, and the at least three metal sleeves are coaxially arranged; the bottom plate is arranged on the upper side of the metal sleeve; the bottom of the bracket is fixedly arranged on the bottom plate; the number of the fixing columns is at least three, the at least three fixing columns correspond to the at least three metal sleeves in a one-to-one mode, and the tops of the fixing columns are fixedly connected with the bottom plate.

The invention discloses a germination device for citrus breeding, comprising: a base, a germination assembly and an atomizer, wherein the germination assembly is mounted on the base; the top of the box body is open and contains culture solution; a partition is limited in the box body; a germination plate is laid on the partition and a receiving cavity is provided on its lower plate surface, the lower end of the receiving cavity can be immersed in the culture solution, and citrus seeds are contained in the receiving cavity; a cover is buckled on the germination plate; the atomizer is mounted on the base and its mist outlet is connected with the receiving cavity. The receiving cavity can absorb the culture solution in the box body, so as to moisten the citrus seeds located inside the receiving cavity; the sprouting end of the citrus seeds is arranged upward, and while ensuring that the receiving cavity can reliably limit and moisturize the citrus seeds, there is no obstruction above the sprouting end of the citrus seeds, which is helpful to improve the germination rate of the citrus seeds; the atomizer can maintain and improve the humidity inside the receiving cavity, and also ensure the air permeability inside the receiving cavity.

The utility model provides a transfer trolley for edible mushroom sticks, and relates to the technical field of edible mushroom production, and the transfer trolley comprises a trolley body and a storage assembly. The vehicle body comprises a base, a rotating shaft rod, a first limiting rod, a second limiting rod, a supporting rod and moving wheels, the rotating shaft rod and the supporting rod are installed at the two ends of the base respectively, and the second limiting rod is detachably installed on one side of the base; the storage assembly comprises a plurality of storage plate bodies which are sequentially stacked in the vertical direction, the storage plate bodies are rotatably installed on the rotating shaft rod, and an arc-shaped supporting groove is formed in the supporting rod; the transfer trolley for the edible mushroom sticks comprises a transfer state and an unloading state, in the transfer state, the second limiting rods are connected with the base, the first limiting rods and the second limiting rods abut against the storage plate bodies from the two sides, and part of the second ends of the multiple storage plate bodies are contained in the corresponding arc-shaped supporting grooves correspondingly; and in the discharging state, the second limiting rod is separated from the base, and the storage plate body can rotate around the rotating shaft rod.

This invention belongs to the field of impact impeller technology, and specifically relates to a detachable water bucket impact impeller structure and its assembly method. The technical solution is as follows: A detachable water bucket impact impeller structure includes a hub and several water buckets. Each water bucket includes a handle and blades. Several mounting grooves are provided on the edge of the hub, and the handle mates with the mounting grooves. A wedge-shaped key is provided between the handle and the mounting grooves. A limiting ring is bolted to the surface of the hub, and the limiting ring covers the wedge-shaped key. This invention provides a detachable water bucket impact impeller structure and its assembly method, facilitating water bucket replacement and ensuring reliable connection between the water buckets and the hub.

The utility model belongs to the technical field of pipe roundness correction, disclose a kind of appearance roundness correction equipment for engineering plastic pipe processing, including support platform, the first positioning frame is fixed in support platform left side upper end, first positioning frame both sides install first positioning roller, the transmission roller is installed in the first positioning frame lower end, first positioning frame upper end is provided with positioning frame, and positioning frame lower end is connected second positioning roller, the second positioning frame is fixed in support platform upper end, second positioning frame upper end is fixed heating pipe, and heating pipe inner wall installs heating wire, the third positioning frame is fixed in support platform right side upper end.This appearance roundness correction equipment for engineering plastic pipe processing is positioned to pipe by setting transmission feeding structure, and realizes uniform feeding, and cooperate rotary roundness correction structure, can be after heating to pipe, by multiple groups of rotating roundness correction roller to pipe roundness correction processing, and cooperate cooling structure, realize complete roundness correction procedure, realize continuity operation.

The utility model belongs to the technical field of pipe bending mould, especially arc rod of heavy -duty passenger car wrinkleless pipe bending mould of taking in, including bottom frame, the top one end of bottom frame is provided with sliding guide mechanism, the top other end of bottom frame is provided with driven limit adjustment mechanism and initiative limit adjustment mechanism respectively, the inside of bottom frame is provided with bending drive mechanism. This arc rod of heavy -duty passenger car wrinkleless pipe bending mould, this mould cleverly integrated a variety of precision mechanism, realized the efficient, accurate and wrinkleless bending processing of heavy -duty passenger car arc rod. Sliding guide mechanism utilizes PTFE sliding cover, ensured the stable, accurate guidance of passenger car arc rod before entering the bending area, effectively protected the passenger car arc rod surface and reduced the friction resistance. Driven limit mechanism provides initiative, adjustable clamping force through the air cylinder, cooperates with slide rail guide and fine adjustment function, realizes reliable initial positioning and process limit.

This utility model discloses an electrical connector sheath mounting structure, including a wire harness end sheath and an appliance end socket. The wire harness end sheath includes a sheath body, a longitudinal arm on one side of the sheath body, and a locking block on the longitudinal arm. The appliance end socket has a locking opening on its side that cooperates with the locking block. The electrical connector sheath mounting structure of this utility model has the advantages of simple structure, low cost, and high reliability.

The utility model relates to LED lamp equipment technical field provides a kind of inner frame for LED lamp, comprising: lamp shade;Anti-loose lock accessory, set in the inside of lamp shade, its outer peripheral part is in abutment with the inside wall of lamp shade;Sealing cover, install in the inner bottom of anti-loose lock accessory;Sealing anti -drop piece, set in sealing cover edge and anti-loose lock accessory corresponding position, the relative movement between sealing cover and anti-loose lock accessory can be limited.The utility model sets up anti-loose lock accessory and sealing anti -drop piece, so that the support component connection of the device is more closely, more reliable limit, can maintain inner frame structure stability for a long time, reduce the trouble caused by loosening misplacement, at the same time, the multi-dimensional sealing anti -drop design of the device setting, so that the fixation of sealing cover is more firm, sealing is more comprehensive, can significantly reduce the risk of water seepage, prolongs the service life of inner frame internal element.

The present invention discloses a pulling drive mechanism of a landing gear operating switch with a pulling force sense, comprising: a control rocker arm having a rocker arm pivoting portion; a graduated movable disk fixedly coupled to the rocker arm pivoting portion, the graduated movable disk and the rocker arm pivoting portion having a common rotation centerline, a graduated arc portion and a driving protrusion formed on the side of the graduated movable disk, the graduated arc portion and the driving protrusion being arranged front and back; a switch assembly, which is disposed on the left and right sides of the graduated movable disk, the switch assembly having a switch housing, a micro switch, a movable pressure plate, a buffer spring and a movable pressure pin; and a graduated fixed seat, which is disposed on the left and right sides of the graduated movable disk. The present invention has the beneficial effects of: having a pulling force sense function, a firm mechanism, a flexible operation process, and reliable limiting; the driving mode of the mechanism effectively prevents the switch handle from being not pulled into place, resulting in the circuit not being converted as required.

The utility model discloses a waterproof hose connector which comprises a connecting pipe body, a connector is formed at each of the two ends of the connecting pipe body, an annular bag cushion is fixed in the middle of the outer wall of each connector, and sealing convex rings are arranged on the outer wall of each annular bag cushion in a distributed mode. The metal hose connector has the advantages that when the metal hose connector is used, on one hand, the clamping plates can be close to the sealing soft sleeve provided with the metal hose by rotating the two T-shaped screw rods respectively, so that the metal hose is reliably limited at the connector under clamping of the clamping plates, and the butt joint installation efficiency between the metal hoses is improved; on the other hand, reliable sealing between the outer wall of the connector and the inner wall of the metal hose can be achieved under the cooperation of the one-way pressing bag, the air channel, the annular bag cushion and the sealing convex ring, it is ensured that the waterproof hose connector can be suitable for butt joint installation between metal hoses with different inner diameters, and the use flexibility of the waterproof hose connector is improved.

The utility model relates to the technical field of cleaning devices, and discloses a water squeezing mechanism and a mop, the water squeezing mechanism comprises a rear shell, a front shell, a scraping piece and an annular buckling piece, the rear shell comprises a rear plate body and a mounting wing; the front shell comprises a front cover plate and a fixed wing, and the mounting wing of the rear shell is opposite to the fixed wing of the front shell, so that the front shell covers the rear shell; the scraping and washing part is arranged on the mounting part, the mounting part is a mounting wing or a fixed wing, and an extrusion opening is formed between the scraping and washing part and the rear plate body; the outer sides, away from the extrusion opening, of the installation wing and the fixed wing are combined to form an annular assembly part, and the annular buckling piece and the annular assembly part are installed in a matched mode and used for connecting the rear shell and the front shell in a combined mode. The rear shell and the front shell are connected from the side face through the annular buckling piece, the connection stability of the front shell and the rear shell can be improved, and long-term use of the water squeezing mechanism is facilitated. And moreover, the annular assembling part matched with the annular buckling piece is arranged, so that the mounting position of the annular buckling piece can be positioned.

The utility model relates to medical image auxiliary device field discloses a head fixing cover for nuclear magnetic resonance examination. The fixing cover includes fixed base, head cover, head fixing assembly, buffer gasket and neck support pillow, is equipped with the sliding slot on the fixed base, and the neck support pillow bottom and sliding slot sliding cooperation, the head cover is connected with the fixed base through the pivot, and is equipped with the buckle, the head cover top sets up head fixing assembly, including thread sleeve, threaded column, handle and elastic pressure cap, and the buffer gasket is attached in the head cover inner wall. All structures are made of nonmetal, nonmagnetic material. The structure can realize multidirectional stable positioning to the head, has good adjustability and MRI compatibility, and is suitable for the fixed support of head in the process of nuclear magnetic resonance examination.

The utility model relates to the technical field of cast iron well lids, in particular to a high-strength cast iron well lid capable of being opened and closed in an overturning mode. Comprising a well lid shell and a cast iron well lid body, the cast iron well lid body is installed above the well lid shell, an arc rubber strip and a circular rubber strip are installed above the cast iron well lid body in a clamped mode, installation protruding blocks are installed above the cast iron well lid body at equal intervals, and opening through holes are formed in the installation protruding blocks; a limiting clamping pin is installed in the middle of the installation protruding block. When a vehicle or a pedestrian passes through the upper portion of the cast iron well lid body, the friction force of the top of the cast iron well lid body can be increased through cooperation of the arc rubber strips, the circular rubber strips and the cross-shaped protruding blocks, certain pressure can be absorbed through the arc rubber strips and the circular rubber strips, and vibration of the circular rubber strips is reduced; by the adoption of the mode, vibration generated when a vehicle passes through the cast iron well lid body can be effectively reduced, then noise pollution is reduced, and the stability of the cast iron well lid body structure and the service life of the cast iron well lid body are guaranteed.

The vacuum arc-extinguishing chamber structure comprises a base, a vacuum arc-extinguishing chamber, a conducting bar and a flexible joint, the conducting bar is fixed on the base, the vacuum arc-extinguishing chamber comprises a vacuum shell, a first conducting rod and a second conducting rod, the first conducting rod is fixed in the vacuum shell and is electrically connected with the flexible joint, one end of the second conducting rod is movably arranged in the vacuum shell along the axial direction, and the other end of the second conducting rod is electrically connected with the flexible joint. One end of the second conducting rod is connected with the first conducting rod and is opposite to the first conducting rod, the other end of the second conducting rod is connected with the conducting bar and is provided with a limiting groove, the base is provided with a limiting boss, and the limiting groove is matched with the limiting boss to enable the second conducting rod not to rotate. The switch equipment comprises the vacuum arc-extinguishing chamber structure. According to the vacuum arc-extinguishing chamber structure and the switch equipment, rotation of the second conducting rod is limited through cooperation of the limiting boss and the limiting groove, possible damage of the corrugated pipe is avoided, the service life of the vacuum arc-extinguishing chamber is prolonged, and the reliability of the vacuum arc-extinguishing chamber is improved; in addition, the limiting boss is integrally arranged on the base, parts are reduced, and the structure is simplified.

The invention relates to an axial staggered permanent magnet braking structure and an observation turntable, the axial staggered permanent magnet braking structure comprises a braking rotor and a braking stator, the braking stator coaxially sleeves the outer side of the braking rotor at intervals, and at least one permanent magnet braking part and at least one eddy current braking part are arranged between the braking stator and the braking rotor. The braking parts are arranged at intervals in a layered mode in the axial direction of the braking rotor, orthographic projections of the braking parts are evenly distributed in the circumferential direction at intervals, and when braking is needed, the braking parts are located at braking positions at the same time. The braking rotor of the structure is connected with the rotating shaft, the permanent magnet in the braking part, the electric field and the magnetic field among the eddy current field interact to generate braking force to prevent overshoot, permanent magnet braking and eddy current braking are combined, the low-speed overshoot and the high-speed overshoot of the rotary table are restrained, limiting is more reliable and safer, and the service life is prolonged. The influence of braking force on the rotary table in a working area can be reduced, small-angle braking is achieved, and movement precision reduction caused by mass center deviation is reduced.

The utility model discloses a feeding device for polysaccharide food extraction production, which relates to the technical field of polysaccharide extraction, and comprises a feeding component, when a lifting hopper obliquely moves upwards along with a conveying belt, a guide rail frame plate is in contact with rollers arranged on two sides of the lifting hopper, so that the movement of the lifting hopper can be guided and limited, and the feeding component is used for feeding the polysaccharide food. The lifting hopper keeps a stable track in the moving process, when materials in the lifting hopper are not evenly distributed, the gravity center of the lifting hopper shifts and inclines towards one end, the guide rail frame plates can limit the two ends of the lifting hopper, and therefore the situation that a conveying belt deforms due to the fact that the lifting hopper inclines is avoided; the conveying belt is well protected, meanwhile, scattering of raw materials is avoided, reliable guiding and limiting are provided for lifting the hopper, it is ensured that the hopper stably runs in the conveying process, scattering of polysaccharide food raw materials caused by shaking of the hopper is avoided, the stability of material conveying is improved, and raw material waste is reduced.