66results about How to "Lengthen or shorten" patented technology

The invention belongs to the field of mechanical processing equipment, and in particular discloses stainless steel cylinder polishing wire-drawing treatment equipment which comprises a bottom plate, an adjusting module, a driving motor, an outer cylinder grinding disc, an inner cylinder grinding disc, a centering support and a connecting rotating shaft, wherein the bottom plate is placed on the ground; an adjusting module is arranged on the upper surface of the bottom plate; the driving motor is mounted on the adjusting module; the inclination angle of an axis of the driving motor can be adjusted through the adjusting module; and the outer cylinder grinding disc, the inner cylinder grinding disc and the centering support are detachably mounted on the connecting rotating shaft coaxially. By adopting the equipment, automatic shrinkage adjustment on a polishing wire-drawing radius is achieved under the centrifugal action of the outer cylinder grinding disc and the inner cylinder grinding disc, then operation of polishing and wire-drawing is completed at one time, and the generation efficiency is improved.

The invention provides a variable torque wave energy hydraulic power generation device, which consists of a plurality of pieces of equipment such as a pile body, a wave energy power generator room, a plurality of groups of crank rocker devices, a plurality of groups of floater moment arms, a plurality of groups of oscillating floaters, a generator room pushrod, a wireless communication device and a wave instrument. The wave instrument can be used for measuring the real-time wave height and tide level data of waves, and driving the floater moment arms and the generator room pushrod to be elongated or shortened according to preset rules, thereby changing the lengths of the floater moment arms and the floating position of the wave energy power generator room and actively adjusting the magnitude of wave energy input torque. The device can be used for obtaining more stable wave energy, and a wave energy collection device and an offshore wind energy collection device are fused into a whole to collect both the wave energy of the oscillating floaters and offshore wind energy for power generation, so that the utilization efficiency of energy resources is favorably improved, and the power generation cost is lowered.

The invention discloses an experimental device of interaction of a horizontal supercavity and a free surface. A rubber baffle is arranged on one side in a water tank, one end of a transmitting tube penetrates through the water tank, the other end of the transmitting tube is connected with a high-pressure cylinder through a solenoid valve, and a high-pressure gas bottle is connected with an air inlet of the cylinder through a reducing valve and a needle valve; and the transmitting tube and the high-pressure cylinder can be moved in a dolly; a camera of a high rate photographic instrument faces an observation window of the water tank, and the high rate photographic instrument is connected with an industrial computer. An experimental bluff body driven by high pressure gas is accelerated in the transmitting tube, ruptured and shot into water, and a three-dimensional flow field generated along with a supercavity gradually appears around the experimental bluff body. A supercavity forming, developing and collapsing process when the high speed bluff body enters the water and an interaction process of the supercavity and the free surface are photographed with a high-speed photography technique so as to facilitate researches on a motion law of the steady state supercavity and the unsteady state supercavity in water, water trajectories and the like. The experimental device disclosed by the invention can be used for studying a whole forming process of the supercavity at different water depths and different angles.

A method of craneless mounting or demounting of a wind turbine blade of a wind turbine is presented. The wind turbine includes a tower on top of which a machine housing is arranged, the machine housing comprising a hub from which a number of wind turbine blades extend substantially radially, and wherein the wind turbine blade comprises a root end and a tip end.; The method comprising the steps of : a) attaching a first cable via a first attachment means to the wind turbine blade at a first longitudinal position of the blade, b) attaching the first cable to a first upper loading means arranged at the machine housing, c) arranging an intermediate cable guiding means between the first attachment means and the first upper loading means at a first distance from the first attachment means, d) attaching a second cable via a second attachment means to the wind turbine blade at a second longitudinal position of the blade, and e) attaching the second cable to the intermediate cable guiding means at a second distance from the second attachment means.; The method further comprises the step of moving the blade between a horizontal position and a vertical position by: f) varying a length of the first cable and / or varying a length of the second cable so that the first distance (11) and / or the second distance (12) are varied.

The invention discloses a light emitting control circuit and a driving method thereof, a display panel and a display device. The light emitting control circuit comprises multiple cascaded shift registers, wherein an input signal end of the first-level shift register is connected with an initial signal end, and a frame initial signal of a valid level having set duration is inputted by the initial signal end to the first-level shift register. When brightness of the display panel is adjusted, 4N units of duration is taken as a step to prolong or shorten duration of the valid level of the frame initial signal based on the present frame initial signal, and light emitting control signals outputted by the various-level shift registers are made to correspondingly prolong or shorten same duration of the valid level. When the 4N units of duration is taken as the step to adjust duration of the valid level of the frame initial signal, brightness step type change of the display panel can be avoided, brightness adjustment of the display panel is made to be smoother, and display brightness is more uniform.

The annular air-lift inner circulating reactor is one inner circulating reactor with high gas-liquid separating efficiency and excellent gas distributing effect. Technologically, the present invention features that the gas-liquid separator in funnel-fine pipe separating structure has complete gas-liquid separation; and that the sintered pipe gas distributor has relatively small initial bubble size resulting in excellent gas distributing effect. In order to improve flow and reinforce mass transfer, the annular air-lift pipe is provided with inner member; and in order to introduce out or in heat for reaction, the annular air-lift pipe is provided with heat exchange member of fingered or coiled pipe. The reactor has the features of high gas-liquid separating efficiency, high gas distributing effect, homogeneous radial gas distribution, homogeneous radial liquid speed distribution and no reverse fluid circulation.

The invention discloses a full-automatic box pasting and folding machine. The full-automatic box pasting and folding machine comprises a paper discharge part, a calibrating part, a fold-back part, a bottoming part, a main folding part, a pressing part and a conveying part, wherein the paper discharge part, the calibrating part, the fold-back part, the bottoming part, the main folding part and the pressing part are sequentially connected in pairs through connecting blocks; conveying mechanisms comprising fixed guide wheels, movable guide wheels and a plurality of guide wheel parts are arranged on the fold-back part; bottoming mechanisms are arranged on the bottoming part; and side folding structures with pressing wheels, lower guide wheels and line pressing wheels acting together are arranged on the main folding part. According to the full-automatic box pasting and folding machine, the guide wheel parts can increase or decrease to increase or reduce the length of the transmission mechanisms in the fold-back part; the bottoming part can be adapted to paper boxes of different specifications by adjusting a sliding seat to control the distance between two or more bottoming mechanisms; and by virtue of the main folding part, paperboards can be stably transmitted, the sides of the paperboards can be accurately folded, and the working efficiency is high.

The invention discloses a positioned full-automatic concrete paving finisher. The positioned full-automatic concrete paving finisher comprises a power assembly and main control panel, an automatic conveying system, a shifting traveling system, a hydraulic adjustment system, a chain assembly, a paving leveling system, a demounting / mounting frame, a movable frame, a laser transceiver assembly and a chain assembly. The positioned full-automatic concrete paving finisher integrates construction steps such as laser control positioning, hydraulic level adjustment, concrete conveying, automatic paving finishing, vibrating slurry mixing, material pushing and slicking, and shifting to change position, and thus is capable of completing the entire flow from concrete paving to laser leveling; all the steps can be completed by only one person easily; the finisher is high in accuracy, light in weight and simple to operate, and thus is capable of achieving the purposes of meeting the requirement on high precision, saving the labor and reducing the labor intensity; besides, the finisher is capable of realizing paving finishing on the horizontal plane, the single slope and the double slopes easily. The finisher is free from complex control program software, and thus is convenient to repair, and consequently, the cost can be reduced and the failure rate of the finisher is reduced; as a result, the finisher is convenient to popularize and utilize.

The invention discloses a transportation vehicle for playing a protecting role in a power battery pack. The transportation vehicle comprises a transporting frame and a pressing mechanism, wherein the pressing mechanism mainly comprises a pressure plate and a screw rod; a threaded hole is formed in the side wall of the transporting frame; the pressure plate is located in an inner cavity of the transporting frame and is parallel to the advancing direction of the transporting frame; the screw rod is matched with the threaded hole; one end of the screw rod vertically passes through the threaded hole from the outer side of the transporting frame and is connected with the pressure plate; a damping plate is arranged at the bottom of the inner cavity of the transporting frame; the damping plate is parallel to the bottom of the inner cavity of the transporting frame and is connected with the bottom of the inner cavity of the transporting frame through a damping spring; and the axis of the damping spring is vertical to the damping plate. The power battery pack is put into the transporting frame, and then the screw rod is rotated, and the pressure plate is continuously pushed to compress the power battery pack in the transporting frame, so that the power battery pack is prevented from shaking in the transporting process.

The invention relates to a building concrete pouring platform, and belongs to the technical field of concrete pouring. The building concrete pouring platform comprises a platform plate and two supporting beams, the two supporting beams are parallel to each other, a moving seat is slidably arranged on each supporting beam in the self length direction, and a supporting piece is fixedly arranged between the two moving seats; and the platform plate is slidably arranged on the supporting piece, a driving assembly for driving the platform plate to slide along the supporting piece is arranged on eachmoving seat, and a driving mechanism used for driving each moving seat to move along the corresponding supporting beam is arranged on each moving seat. During constructing, a worker stands on the platform plate for conducting the concrete pouring operation, the worker directly stands on a steel rib framework for preventing from falling into the steel rib framework, the work efficiency is improved, deforming and displacing of the steel rib framework are avoided simultaneously, and the pouring quality is improved.

The invention provides an adjusting device used for improving soil. The device comprises a supporting base, a stirring box is welded to the middle of the outer surface of the supporting base, a firstmotor is fixedly installed on the top of the stirring box, a rotary shaft of the first motor extends to the inside of the stirring box and is in transmission connection with a stirring rod through a coupler, a water outlet in the bottom of the stirring box is fixedly connected with a first water outlet pipe, and the bottom of the first water outlet pipe extends to the bottom of the supporting baseand sleeved with a connecting sleeve. The bottom of the connecting sleeve is sleeved with a second water outlet pipe, and a sprayer is fixedly connected with the bottom of the second water outlet pipe. By means of the adjusting device used for improving the soil can adjust the height between the sprayer and the ground soil, the flexible degree is improved so that the sprayer can be suitable for the soil of different heights, the situation that the soil is over high and the sprayer enters the soil to result in sprayer blocking is avoided, the maintenance time is shortened, and the working efficiency of the device used for improving the soil is improved.

The invention discloses a six-shaft robot capable of moving freely. A base comprises a hollow base main body and a base cover body covering the base main body. The side wall of the base main body is provided with long-striped-shaped guiding through holes formed obliquely. The base main body is internally provided with two rolling wheel mechanisms arranged symmetrically front and back. The base cover body is internally provided with a rolling wheel driving mechanism. A small arm of the robot is provided with an extending arm body capable of swinging, and a bending function is given to the small arm through the swinging extending arm body. In the actual operation process, the rolling wheel driving mechanism drives the two rolling wheel mechanisms to act, and the two rolling wheel mechanisms drive rolling wheels arranged on the two rolling wheel mechanisms to obliquely move along the guiding through holes; and thus, the downgoing rollers make contact with the ground to jack up the base, and the whole robot can move freely.

The invention provides a thread cutting device for a column type sewing machine. The thread cutting device is assembled on a side seat with a needle hole and is mainly composed of a cutter group, a transmission device and a lower shaft. A fixed cutter of the cutter group is located behind the needle hole while a movable cutter of the cutter group is assembled on the side seat, wherein the transmission device is assembled on the movable cutter and can drive the movable cutter to swing around the axis of rotation parallel to a lower axis from a thread hooking position on one side of the needle hole to a cutting position where a thread is cut. In this way, since the fixed cutter is located behind the needle hole and the movable cutter can swing back and forth between the thread hooking position of and the cutting position around the axis of rotation, a short length of thread is remained on the surface of a sewn product when the movable cutter cuts the thread at the cutting position.

The invention discloses a village power supply auxiliary climbing-up device. The village power supply auxiliary climbing-high device includes a left ladder and a right ladder of which the top portionsare hinged together, the left ladder and the right ladder are both provided with two vertical rods, an included angle controlling device which can regulate the included angle of the left ladder and the right ladder is installed between the left ladder and the right ladder, and the interior portions of the vertical rods are provided with hollow cavities of which lateral sections are in a rectangleshape; and the lower ends of the hollow cavities are provided with sliding blocks which can only vertically slide in the hollow cavities or slide out of the hollow cavities in an inserted mode, the middle sections of the hollow cavities are provided with driving devices which can drive the sliding blocks to slide from top to bottom in an installing mode, the upper sections of the hollow cavitiesare provided with batteries which can supply electric power for the driving devices, and the upper portions of the vertical rods are provided with a rising key and a descending key which can control the sliding blocks to rise and descend in an installing mode. The village power supply auxiliary climbing-up device has the advantages that whether four support legs touch floor can be automatically judged, the village power supply auxiliary climbing-high device can automatically lengthen or shorten the length of the support legs if one of the support legs is short, and finally the four support legs can touch the ground simultaneously, the operation is simple, the use is convenient, the cost is low, and the work efficiency can be improved.

The invention provides a variable moment type wave energy hydraulic power generation device, which consists of a pile body, a wave energy generator cabin, multiple sets of crank rocker devices, multiple sets of float force arms, multiple sets of oscillating floats, engine room push rods, wireless communication device, tide meter and other equipment. Use the tide meter to measure the real-time data of wave height and tide level, and drive the multiple groups of buoy arms and engine room push rods to extend or shorten according to predetermined rules, thereby changing the length of the multiple groups of buoy arms and changing the The floating position of the wave energy generator cabin actively adjusts the size of the wave energy input torque. Utilizing the device of the present invention can obtain more stable wave energy, integrate the wave energy collection device and the offshore wind energy collection device into a whole, not only can collect the wave energy of multiple oscillating buoys to generate electricity, but also collect offshore wind energy to generate electricity at the same time, which is beneficial Improve energy utilization efficiency and reduce power generation costs.

The invention relates to a magnetism driving epiphysis traction and pressurization device. The magnetism driving epiphysis traction and pressurization device comprises a near end fixing sleeve, a permanent magnet, a linear screw rod, and a far end moving sleeve, wherein the near end of the near end fixing sleeve is used for being fixed in the medullary cavity of the near end bone, and the far endof the near end fixing sleeve is used for forming an opening end; the permanent magnet is rotatably arranged in the near end fixing sleeve, and can rotate forwards or backwards around the axis of thenear end fixing sleeve; the linear screw rod is rotatably supported in the near end fixing sleeve along the axial direction of the near end fixing sleeve; the near end of the linear screw rod is connected with the permanent magnet and can synchronously rotate along with the permanent magnet; the near end of the far end moving sleeve is arranged in the near end fixing sleeve through the opening endof the near end fixing sleeve in a sliding manner; internal threads which cooperate with external threads of the linear screw rod are formed in the near end of the far end moving sleeve; the far endmoving sleeve is in threaded rotating cooperation to the linear screw rod; and the far end of the far end moving sleeve is used for being fixed in a medullary cavity of the far end bone. Through the adoption of the magnetism driving epiphysis traction and pressurization device disclosed by the invention, periosteum at an osteotomy location can be subjected to traction in a noninvasive and uniform-speed manner to induce ossification of the periosteum, so that the length of skeletal is extended, and continuous pressurizing effect can also be provided for the fracture end through abbreviation topromote healing of the fracture end.

The invention discloses an on-orbit exposure test transmittance change test probe for a satellite-used material and a using method of the probe. The test probe comprises a bracket, wherein more than two photoelectric sensors are arranged on the bracket, wherein a transparent optical material is correspondingly arranged above each photoelectric sensor; cover plates are arranged on the transparent optical materials; more than two through holes are formed in the cover plates; the transparent optical material is correspondingly arranged below each through hole; the cover plates are fixedly connected with the bracket. The using method comprises the following steps: overlapping the test probe to the exterior of a spacecraft, and measuring the current of each photoelectric sensor during the on-orbit operation period under the same illumination condition; and transmitting the tested current back to the ground, and comparing the current of a test sample with the current of a contrast sample, thus obtaining the comparison current change condition, namely the transmittance change condition of the transparent optical material serving as the test sample in a space environment. The test probe is simple in structure and reliable and can test the optical transmittance change of the satellite-used material during on-orbit exposure on line.

The invention discloses a stirring rod. The stirring rod comprises a stirring paddle and a connection rod, wherein the stirring paddle comprises a paddle main body, blades and Z-shaped grooves; a through hole is formed in the central position of the paddle main body; the Z-shaped grooves are formed in the front and back surfaces of the paddle main body; the blades are arranged at the left and right sides of the paddle main body; the connection rod is formed by splicing more than two connection rod splicing parts; a blind hole is formed in a splicing part main body of each connection rod splicing part and internal threads are arranged in each blind hole; a bulge is arranged at the other end of each splicing part main body and external threads are arranged outside the bulge; the bulges are matched with the blind holes in size; the external threads on the bulges are matched with the internal threads in the blind holes; inserting rods are arranged at the two sides of the connection rod splicing parts; the diameter size of each inserting rod is matched with the width size of the corresponding Z-shaped groove. The stirring rod disclosed by the invention can be matched with reaction devices with different sizes through extending or shortening the length of the connection rod and increasing or decreasing the quantity of the stirring paddles according to requirements; the stirring rod is simple in structure and convenient to use.

The invention relates to a seat, in particular to a medical heatable seat. The technical purpose of the invention is to provide the medical heatable seat with a heating function. According to the technical scheme, the medical heatable seat comprises a mounting frame, a seat plate, a back plate, seat cushions, a first pole, a first cylinder, a first piston, a sliding block, a sliding rail, a connecting block, a spring or the like; a plurality of first through holes are formed in the left wall of the mounting frame, the seat plate is arranged on the top of the mounting frame, the back plate is arranged on the right side of the top of the seat plate, a plurality of second through holes are formed in the middle of the seat plate and the middle of the upper wall of the mounting frame, the seatcushions are embedded in the top of the seat plate, and the seat cushions are arranged on the upper portions of the second through holes. The seat achieves the effect of having a heating function, canprovide warmth to the lower portion and legs of a patient through a first electric heating wire and a second electric heating wire, can also be moved so that the patient can have more time to go outfor relaxation, and can massage the back of the patient, which is more conducive to the rehabilitation of the patient.

The invention discloses a silicone mold. The silicone mold comprises a silicone mold body, a Teflon net and a basic cloth; the Teflon net is composited at the bottom of the silicone mold body, and the basic cloth is composited on the top and / or bottom of the Teflon net. The Teflon net is composited in the silicone mold body and then subject to bottom sealing through the basic cloth, the whole silicone mold is kept flexible, meanwhile, through the shaping effect of the basic cloth, the silicone mold is not prone to twisted deformation during annular strip forming, and size stability of the mold is ensured. Meanwhile, a connecting buckle is combined with the Teflon net, multiple silicone molds can form an annular strip to achieve continuous production, and through connection and unbuckling of the connecting buckle, the mold length can be increased or reduced according to needs.

The invention belongs to the field of food processing machinery, and particularly relates to a blanching machine. The blanching machine comprises a housing; a material inlet and a material outlet areformed in the two sides of the housing; a belt conveyor, a motor, spray heads and a water heating device are arranged in the housing; a hopper is arranged above the material inlet in the housing; a pair of horizontal first rollers are arranged between the lower part of the material inlet and the belt conveyor; a gap is formed between the two first rollers; the first rollers are driven by the motor; groups of openable doors are arranged on the top surface of the housing; a cross beam is arranged between each group of doors; a lifting device is arranged on the cross beam; a second roller is arranged below the lifting device; a row of spray heads are arranged below the belt conveyor; an opening is formed in the side wall below the material inlet in the housing; a material residue filter screen drawer is arranged in the opening; a temperature sensor and a controller are arranged in the housing; the controller is connected with the motor, the belt conveyor, a hydraulic rod, the lifting device and the temperature sensor. The blanching machine has comprehensive functions and can produce high-quality blanching products.

The invention discloses an immune cell movement speed detection system. The system comprises an instrument body, an operation screen is arranged on the surface of the instrument body, a detection opening is formed in the bottom end of the operation screen, a C-shaped limiting plate is fixed to the edge of the outer side of the detection opening, the surface of the inner side of the C-shaped limiting plate and the bottom end face of the detection opening are located on the same horizontal plane, the top end of the C-shaped limiting plate is connected with a limiting top plate, and the bottom end face of the limiting top plate and the top end face of the detection opening are located on the same horizontal plane. As the limiting top plate and the C-shaped limiting plate are designed, when the test paper card is inserted into the instrument body, the test paper card can be effectively limited and fixed, the phenomenon of deviated insertion is avoided, stable operation is effectively guaranteed, meanwhile, the length of the C-shaped limiting plate can be increased or decreased through the designed adjusting column and the designed adjusting supporting plate according to actual operation, and the practicability is improved.

The invention discloses a device for collecting fish samples in a sea grass bed. The device is made of nylon net materials, can be used for collecting the fish samples in a sea grass bed ecological system, and has the characteristics that portability and labor saving are achieved, operation is convenient, and the resource quantity can be quantitatively estimated. The device for collecting the fishsamples in the sea grass bed is composed of a net bag, a string bag, floating balls, lead blocks, a floating line, traction rods and the like. The floating line has the fixed length, so that the seasweeping area is conveniently calculated and investigated. The device for collecting the fish samples in the sea grass bed has the working principles that the device is placed in the sea grass bed, and the net bag and the string bag are opened, so that the floating line on two wings is parallel to a shoreline; two persons tightly hold the traction rods to keep the traction rods perpendicular to the ground, and the device is slowly dragged to a shore at a constant speed; the two wings are closed up while the device is dragged at the shallow water position of the shore; and the net bag is shakenafter the two wings are closed up, the samples are concentrated at the string bag, a net opening at the bottom is unfastened, and the samples are collected.

The invention discloses automatic production equipment capable of realizing glass grabbing. The automatic production equipment comprises an adjusting and grabbing mechanism, clamping and transmission mechanisms, stable conveying mechanisms and built-in baking mechanisms; the two sides of the adjusting and grabbing mechanism are connected with the clamping and transmission mechanisms, one end of each clamping and transmission mechanism is connected with the stable conveying mechanism, and one end of each clamping and transmission mechanism is connected with the built-in baking mechanism. According to the automatic production equipment capable of realizing glass grabbing, a grabbing platform and a bottom platform form a lifting structure through a lifting air cylinder, a dispensing machine is connected with the clamping and transmission mechanisms, the stable conveying mechanisms and the built-in baking mechanisms, after dispensing operation of glass is completed, the glass is conveyed to the position of the grabbing platform through the clamping and transmission mechanisms, a power device is used for positioning, a pressure device is started to start pressurization, a drum-type pressing machine is matched, pressure is controlled, suction cups are lowered in batches, attaching operation is carried out, the whole operation process is automatic, and the phenomenon of manual operation errors is reduced.

The invention discloses a lithium battery pole piece prime coating machine capable of repeatedly positioning and coating. The machine comprises an unwinding mechanism and a winding mechanism, wherein a positioning and feeding mechanism is arranged between the unwinding mechanism and the winding mechanism, a film length adjusting mechanism is arranged between the positioning and feeding mechanism and the winding mechanism, the film length adjusting mechanism comprises a motor, the motor is fixed to the front face of a mounting plate, an output shaft of the motor is fixedly connected with a transmission rod, the two ends of the surface of the transmission rod are fixedly connected with baffles correspondingly, the opposite faces of the two baffles are rotationally connected with lead screws by means of connecting pieces correspondingly, and the surfaces of the lead screws are in threaded connection with movable blocks correspondingly. The machine relates to the technical field of lithium battery production. According to the lithium battery pole piece prime coating machine capable of repeatedly positioning and coating, the problems that when a pattern deviation range of a lithium battery pole and the prime coating machine in the prior art is large, the positioning and feeding mechanism cannot adjust a base material coated with patterns to a proper position and cannot control the coating precision to be + / -0.5 mm are solved, and the color register precision can be ensured.

The invention provides a guardrail structure used for climber greening. The structure comprises planting weight boxes and a water storage tank. The planting weight boxes are arranged on the bottom side of a guardrail body. Water inlets are symmetrically formed in the bottom ends of the side walls of the planting weight boxes. Supporting columns are welded and fixed to the middle positions of the inner sides of the planting weight boxes. Climbing protection nets are rotationally connected to the outer walls of the supporting columns through hinges. The water storage tank is fixed to the bottomsides of the climbing protection nets through bolts. Three water collection covers are welded and fixed to the top sides of the climbing protection nets. Output pipelines are symmetrically arranged onthe two sides of the bottom end of the water storage tank. Anti-collision boards are further arranged on the outer side walls of the planting weight boxes. A fixed board is welded and fixed to the outer wall on one side of each planting weight box. The guardrail structure used for climber greening is provided with the climbing protection nets arranged in two layers, the two layers of climbing protection nets are spaced at 25 centimeters, through design of the double-layer protection nets, on the one hand, the protection capacity is improved, and on the other hand, climbing of plants is further facilitated.

The invention relates to the technical field of twisting prevention devices, in particular to a prepreg fiber yarn twisting prevention mechanism. Comprising a box body, a driving assembly, a lifting assembly, a guide rod and a fixing rod; the box body is provided with an opening used for feeding and discharging fiber tows, the driving assembly is installed at the top end of one side wall of the box body, the lifting assembly is installed in the box body, the top end of the lifting assembly is connected with the driving end of the driving assembly, and the guide rod and the fixing rod are parallel and are both installed in the box body. A gap exists between the guide rod and the fixing rod, the guide rod is connected with the lifting end of the lifting assembly, when the driving end of the driving assembly is in a working state, the lifting end of the lifting assembly can drive the guide rod to slide in the height direction of the box body, and the guide rod and the fixing rod are both used for being in slidable tensioning fit with fiber tows. The invention aims to solve the problem that fiber tows are easy to twist into balls and need to be spread manually in the yarn spreading process of prepreg production.