863 results about "Chain drive" patented technology

The invention relates to a pre-compensation flexible assembling and adjusting mechanism of a large-diameter transmission reflector. The pre-compensation flexible assembling and adjusting mechanism comprises the large-diameter transmission reflector, a glue joint mandrel, an isolation telecentric flexible hinge, an isolation plate, a hooke flexible hinge, an adjusting flexible branch chain, an anti-rotation flexible branch chain, a back plate and a driving assembly. The large-aperture transmission reflector is provided with three blind holes for glue joint, and is connected with the isolation plate through three groups of glue joint mandrels and isolation telecentric flexible hinges, so that isolation of load deformation interference of the isolation plate is realized; the driving ends of the two adjusting flexible branch chains are correspondingly connected with two driving assemblies installed on the back plate, and the connecting ends of the adjusting flexible branch chains are connected with the isolation plate. One ends of the Hooke flexible hinges and the anti-rotation flexible branch chains are connected with the isolation plate, and the other ends are connected with the back plate; the device has the advantages of being simple in structural form, stable in movement and high in precision, meanwhile, the return clearance caused by axial load reversing under heavy loads can be avoided, the additional surface shape caused by assembling and adjusting stress is effectively isolated, and the additional surface shape caused by gravity is compensated.

The application discloses an automatic stereoscopic storage warehouse, which comprises a high-precision linear guide rail embedded in a column of a portal lifting guide frame; a horizontal conveying and taking platform is driven by a servo motor to drive a second chain, and the second chain drives a moving plate to move; and the conveying and taking platform is located between the portal lifting guide frames and is displaced up and down by the two symmetrical portal lifting guide frames. In the use process, a dynamic avoidance module calculates data of a radar and infrared distance sensors on both sides of the conveying and taking platform, thereby automatically monitoring a moving obstacle module, avoiding motion interference when the conveying and taking platform moves the moving plate of a storage layer out, avoiding collision accidents caused by the moving plate not being completely moved out of the storage layer, and avoiding damage of the plate; and according to cooperation of a path planning module and distribution of collected plate quality, the best storage position and the fastest processing time are obtained.

The invention discloses a flexible three-degree-of-freedom platform with attitude adjustment, impact resistance and vibration isolation functions, and relates to the technical field of heavy-load precision assembly and attitude adjustment, the flexible three-degree-of-freedom platform comprises a fixed base, a movable platform and a plurality of branch chains connected between the fixed base and the movable platform, the branch chains are flexible branch chains, and each flexible branch chain comprises a composite flexible hinge, a plurality of flexible connecting rods and a plurality of flexible connecting rods, the two ends of the composite flexible hinge are connected with the fixed base and the movable platform respectively, and the composite flexible hinge comprises a metal core and a composite material jacket wrapping the metal core; the transmission rod is in transmission connection with the composite flexible hinge; the hydraulic buffers are integrated in the flexible branch chains and used for absorbing impact loads; the buffering assembly is installed on the fixed base and used for buffering the movable platform through the flexible branch chains; by arranging the composite flexible hinge, the strength of metal and the anti-fatigue characteristic of a composite material are combined, the fatigue problem of a metal hinge is avoided, the service life of the platform under the heavy-load working condition is prolonged, and the reliability of the platform under the heavy-load working condition is improved.

Snowmobile transmission, including a housing with a cover, an input shaft and an output shaft arranged inside the housing, and a chain transmission drive including a chain connecting a drive sprocket arranged on the input shaft to a driven sprocket arranged on the output shaft, a reverse gear axle about which a reverse gear sprocket freely rotates also arranged inside the housing, the reverse gear sprocket engaging with the chain, and a reverse gear engaging with a movable gear arranged on a grooved sleeve of the input shaft, which is movable by tilting an inner switching fork and being driven by an axle with a lever, an adjusting rod, an outer switching fork, wherein rotation of the outer switching fork is restricted by a removable sector attached to the housing cover, and an adjusting screw arranged on the housing, abutting against a support sleeve and fixed by a cotter pin.

The utility model relates to the technical field of plastic product processing, in particular to a multi-station grinding and polishing all-in-one machine which comprises a grinding and polishing machine box for plastic product processing, one side of the grinding and polishing machine box is in an opening state, a box door is arranged on the opening side, and a plurality of sets of speed-up gear boxes which are evenly arranged at equal intervals are embedded in the top face of the grinding and polishing machine box. According to the utility model, the plurality of groups of speed-up gearboxes which are uniformly arranged at equal intervals are embedded in the top surface of the grinding and polishing machine box, and are matched with the servo motor mounted at one end of the bottom and the rotating shafts which are in the case and have the same number as the speed-up gearboxes and correspond to the speed-up gearboxes in position, so that effective transmission and speed increase of power are realized; two groups of transmission chain wheels mounted on each group of rotating shafts are in transmission connection with two adjacent groups of rotating shafts through transmission chains, so that synchronous operation among a plurality of stations is ensured; and a replaceable grinding and polishing wheel is mounted at the top of the grinding and polishing shaft connected with the output end of the step-up gear box, so that the grinding and polishing wheel is simple and rapid to replace.

The utility model provides helmet conveying and drying equipment which comprises a drying box and a transmission chain, an inlet notch and an outlet notch are formed in the two sides of the bottom of the drying box, a plurality of chain wheels are arranged in the drying box, the transmission chain enters from the inlet notch and penetrates out of the outlet notch through the chain wheels to form a closed loop, and a supporting rod is rotatably installed on the side face of the transmission chain. The upper end of the supporting rod is provided with a supporting face, and the lower end is provided with a counter weight. An operator covers a painted helmet on the supporting surface of the supporting rod below the drying box, the helmet is driven to enter the drying box from the feeding notch along with transmission of the transmission chain, the supporting rod is always in a vertical state under the action of gravity of the heavy hammer, the helmet is always located on the supporting surface, and the helmet comes out from the discharging notch after being dried by the drying box. Compared with an existing mode that a supporting rod is adopted for supporting, the helmet drying device enables the helmet to be dried more sufficiently. The helmet which is independently placed cannot be collided, so that the completeness of a paint surface is ensured; the transmission chain is adopted for transmission, taking and placing are convenient, and efficiency is improved.

The invention relates to a pneumatic feeding mechanism and a control method thereof. The mechanism comprises a driving unit, a chain transmission unit, a pneumatic clamping unit and a control system. The driving unit drives a chain wheel through a motor speed reducer to drive the loop chain to lift; one end of the ring chain is connected with the pneumatic clamping unit and the other end is connected with the balancing weight; the pneumatic clamping unit comprises a clamping air cylinder, a clamping rod and a bar clamp and is connected with an external air source through a spiral air pipe. The control system monitors the lifting position and speed in real time through a rotary encoder, and precise control is achieved. Through the innovative chain transmission and pneumatic clamping collaborative design and in combination with an intelligent control method, the problems that an existing feeding mechanism is too high in height, poor in stability and insufficient in control precision are effectively solved, and the feeding mechanism is particularly suitable for the vacuum precision casting furnace environment with the limited floor height. The overall height of the mechanism is reduced by more than 30%, the positioning precision reaches + / -0.5 mm, and the operation reliability is remarkably improved.

The utility model discloses a bucket type lifting feeding device, which relates to the technical field of lifting feeding and comprises a conveying belt main body, the outer surface of the conveying belt main body is movably abutted against an electromagnetic horizontal conveying machine, and the inner side surface of the conveying belt main body, which is close to a driven chain wheel, is fixedly provided with a lower limiting stopper; an upper limiting stopper is fixedly installed on the inner side face, close to the speed reducer, of the conveying belt body. A material receiving and overturning mechanism is arranged on the inner side face of the conveying belt body and comprises an installation body piece fixedly installed on the outer surface of the conveying belt body. According to the bucket type lifting feeding device, the electromagnetic horizontal conveying machine conveys materials to the overturning material opening, along with the increase of the weight, the guide bearing controls the crank arm to move, the overturning material opening is driven to start overturning, the materials are conveyed into the lifting bucket, the conveying chain is used for driving the lifting bucket to do reciprocating motion, and the lifting bucket stops moving when making contact with the upper limiting stopper; and then discharging operation is started, the materials are discharged through a discharging opening, and the phenomenon of material leakage during material receiving is avoided.

The invention provides a walking type train carriage boosting device, and belongs to the technical field of railway vehicle displacement auxiliary equipment. The walking type train carriage boosting device comprises a walking rod, a connecting plate and a boosting device body. The boosting device comprises a power output unit, a chain transmission mechanism, a baffle frame, a pushing wheel set and a supporting wheel. The supporting wheel is installed on the rear side of the power output unit, the power output unit is arranged on the inner side of the baffle frame, the chain transmission mechanism is arranged on the outer side of the baffle frame, an output shaft of the power output unit is connected to the chain transmission mechanism, the pushing wheel set is arranged below the inner side of the baffle frame, and the two ends of the pushing wheel set are movably connected to the baffle frame. According to the walking type train carriage boosting device, the good transmission effect between the driving wheel and the carriage wheel is achieved through the groove between the driving wheel and the train wheel, and the walking type train carriage boosting device has the advantages of being small in occupied space, capable of saving labor and easy to operate and can be used for moving boosting of various train carriages.

The invention belongs to the technical field of intelligent inspection, and discloses intelligent inspection robot equipment for an intelligent power plant, which comprises a robot main body, an overturning cover plate is movably arranged at the top of the robot main body, and two groups of chain transmission modules are fixedly mounted at the tops of the front surface and the back surface of the overturning cover plate; two sets of overturning arms are arranged on one side of the upper end of the chain transmission module, stabilizing wheels are movably arranged on the sides, away from the chain transmission module, of the overturning arms, two sets of welding plates are welded to the side, away from the stabilizing wheels, of the chain transmission module, and adjusting knobs are movably arranged at the bottoms of the welding plates. An adjusting screw rod is arranged at the output end of the adjusting knob; through cooperation of structures such as the ejector rods, the overturning arms and the stabilizing wheels, the stability of the driving structures on the inner sides of the limiting rails is effectively improved, cooperation of the two driving structures can be controlled at the same time through a single motor, the cost of the device is effectively reduced, and the time spent on maintenance is shortened.

This utility model relates to the field of lifting equipment, and more particularly to a hoist, comprising a rotating base, a vertically mounted lifting frame on the rotating base, a vertically mounted lifting mechanism on the lifting frame, and a vertically sliding rotating frame on the lifting frame. By setting a rotating base that can rotate as a whole and a rotating frame that can rotate independently, this utility model enables the placement frame to perform both vertical lifting and horizontal rotation and pitch angle adjustment, greatly expanding the material placement range and flexibility, and meeting the needs of complex working conditions. The lifting function is achieved through the cooperation of the lifting mechanism with the slide rails and sliders on the lifting frame. Chain drive ensures the synchronization of power transmission, ball screw pairs ensure transmission accuracy and stability, and the guide rail and slider mechanism effectively limits the swaying of moving parts, ensuring high precision and high stability of the overall lifting process.

This utility model discloses a belt breakage prevention device for inclined conveyor belts in coal mines, including a conveyor, a connecting assembly, and a follower assembly. The follower assembly is symmetrically arranged on both sides of the conveyor. The connecting assembly includes multiple pre-embedded connectors, which are uniformly embedded and fixed inside the conveyor belt. Each pre-embedded connector has a steel wire rope fixed at both ends, and a chain connector is fixedly connected to the other end of each steel wire rope. The follower assembly includes a frame, with a drive shaft rotatably connected to both ends of the frame. A brake is installed on the shaft of the drive shaft located outside the frame, and a drive motor is installed at the shaft end. A sprocket and chain drive assembly is installed inside the frame. The follower assembly provides auxiliary drive through rigid chain tension during the belt's ascent, effectively sharing the belt load in the high-tension zone at the top of the inclined roadway, reducing stress concentration at joints and weak points, and lowering the probability of breakage from the source. This solves the problem of existing devices only providing passive responses.

The utility model relates to the technical field of coal mine underground fully mechanized coal mining face conveyors, in particular to a three-chain scraper chain for a conveyor. The utility model patent with the application number of CN202310145841.0 discloses a three-chain transmission system based on the ultra-large transportation volume, and the problems that a three-chain scraper chain is poor in stress uniformity of three chains, poor in S-bend adapting operation and the like exist in the three-chain scraper chain. The three-chain scraper chain for the conveyor is composed of the scrapers, the U-shaped bolts, the nuts, the left chain, the middle chain and the right chain, one scraper is fixed to the left chain and the middle chain through the U-shaped bolts, and the other scraper is fixed to the middle chain and the right chain through the U-shaped bolts at the interval of n rings, that is, each scraper is fixed to the two chains. And different scrapers are crossly arranged left and right. By means of the arrangement mode, the stress uniformity of the three chains is greatly improved, meanwhile, the adaptability of S-bend operation of the conveyor is improved, and high application and popularization value is achieved.

The application discloses a machine tool cutter supporting mechanism, which comprises an assembly opening and closing component and a cutter replacing mechanism. The inner side of one end of the assembly opening and closing component is provided with a bolt sleeve jointed translation adjusting part, the outer side of the translation adjusting part is provided with a bolt assembled lifting and carrying mechanism, the inner side of one end of the lifting and carrying mechanism is provided with a spline inserted cutter sample, and the upper outer end of the assembly opening and closing component is provided with a bolt assembled cutter replacing mechanism. The device is mainly used for installing the cutter replacing mechanism on the upper end of the assembly opening and closing component by using a slotted hinged frame, and making a camera shoot, so that the hinge transmission of an electric hinged seat, a mechanical telescopic arm and a mechanical swing arm enables the mechanical clamp to take down the cutter, and the effect of lifting and lowering the cutter is achieved, the automation degree of the equipment is improved, and the risk of operation of workers can be effectively reduced in the production and processing process of the equipment.

This utility model discloses a dough proofing and feeding device. The feeding machine includes a feeding frame, within which two parallel first chain drive mechanisms are arranged. A plurality of evenly distributed feeding bowls are rotatably arranged between the two first chain drive mechanisms along their transmission direction. A locking structure is provided between adjacent feeding bowls. On the lower straight section of the chain of the first chain drive mechanism, the feeding bowls can maintain their position from rotation through the locking structure. The feeding frame is provided with a discharge support structure that enables the entire set of feeding bowls to flip as it moves on the upper straight section of the chain. A second motor drives the first chain drive mechanism, causing the feeding bowls to move cyclically, achieving continuous and efficient material conveying and improving feeding efficiency. Utilizing the cooperation of the discharge support guide rail, discharge notch, and rollers, the feeding bowls can be precisely controlled to flip and unload at specific positions, making the unloading process accurate and controllable.

The utility model discloses a well type tempering furnace for die steel relates to die steel technical field, including the top of the tempering furnace body that is equipped with the opening, the top of the tempering furnace body is equipped with the cover and sets up the furnace cover of tempering furnace in the top of the tempering furnace body, is equipped with the rotary drive mechanism for fixing die steel and driving die steel rotation on the furnace cover of tempering furnace, the utility model discloses being equipped with the fixed jaw, can fix the die steel and hold, is convenient for the fixed die steel, the output shaft of first speed reducer drives one gear rotation, and a plurality of gears are connected through chain drive, make all the gear that sets up rotate synchronously, and the gear drives the rotation of the rotating rod, and the rotating rod drives die steel rotation through fixed plus jaw, can make all the die steel that fixedly holds rotate, can rotate the die steel of inner ring, avoid the uneven heating of inner and outer rings to occur, make all the die steel even heating, improve the heat treatment quality.

The utility model relates to the technical field of conveying equipment, and discloses a conveying device which is characterized in that a walking mechanism capable of driving a conveying belt to move periodically is introduced into a traditional conveying belt system through structural optimization design, and the periodic movement can improve conveying intervention from a conveying procedure to a next procedure, so that the conveying efficiency is improved. The material conveying accuracy is improved, so that the conveying requirements of different materials and different working procedures are better met; the walking mechanism is simple in structure, the chain transmission assembly is arranged, the walking rollers are additionally arranged in the conveying mechanism, the chain transmission assembly and the walking rollers are matched for transmission, reciprocating walking of the conveying mechanism can be achieved, and the whole conveying device is more reliable and efficient in the running process.

The utility model relates to a novel thickener bottom stirring device. A conical bottom cavity is formed below the bottom of a thickener, an upper stirring shaft is rotationally connected with the bottom face of the thickener through a stuffing box, the stuffing box is provided with a matched stuffing gland, the space between the stuffing box and the upper stirring shaft is filled with stuffing, and a stirring impeller is arranged at the end, on the inner side of the thickener, of the upper stirring shaft. The transmission mode between the upper stirring shaft and the output shaft of the speed reducer all-in-one machine is chain transmission, so that the two shafts are not in the same vertical direction, and the speed reducer all-in-one machine is prevented from receiving a medium leaked from a stuffing box; the second protection plate is arranged on the upper stirring shaft, the edge of the second protection plate is located on the outer side of the first protection plate, the first protection plate is arranged on the bottom face of the cone bottom cavity, a closed pattern is formed on the bottom face of the cone bottom cavity, and leaked media are sealed to the area, deviating from the stirring shaft, of the bottom of the cone bottom cavity. The overflow port is formed in the outer side of the first protection plate of the cone bottom cavity, is lower than the top end of the first protection plate and is used for discharging leaked media.

The application relates to the technical field of robots, and discloses a kind of two-degree-of-freedom parallel ankle joint mechanism of humanoid robot and kinematics and mechanics solving method, including seven-link transmission structure, which is composed of two groups of closed-chain transmission of parallel four-bar linkages.Motor I and II are installed on the upper end of the lower leg, and the rotation drives link IV and III to move through link I, II, V and VI, and then coupled control ankle joint pitch and lateral freedom degree.The mechanism realizes load balancing of double motors through parallel transmission, improves equivalent torque, and can combine kinematics and mechanics solving method, so that precise control can be realized only by motor feedback, sensor cost is reduced, and is suitable for high stability motion demand of biped robot.

The utility model provides a turnover machine in a metal filing briquetting assembly line, which comprises a turnover mechanism and a driving mechanism, the driving mechanism is arranged on the turnover mechanism, a motor drives a driving roller to rotate through a gear box, a chain drives a driven roller to rotate, and a turnover hopper is in a bottom state according to a picture. The rotating chain drives the lifting plate and the lifting roller on the chain to move upwards so as to drag the turning hopper to move upwards, the sliding roller moves along the bent structure of the guide frame and is clamped at the end in the continuous upward process, at the moment, the lifting roller moves upwards to enable the turning hopper to turn over with the sliding roller as the axis, and therefore internal waste is poured into the pulverizer. And metal scraps can be poured into the pulverizer without manual operation, so that time and labor are saved.

A method for reducing the engagement noise in a chain or belt drive for an internal combustion engine with a crankshaft having a drive sprocket (30) and at least one driven shaft with at least one first driven sprocket, comprising the following steps: determining (200) the external excitations in the chain drive to determine the engine cycle sequences in which stresses occur; converting (202) the engine cycle sequences in which stresses predominate into sprocket sequences; determining (204) sprocket sequences that are not predominant; determining (205) a number of sprockets with a non-predominant sequence for the chain or belt drive;Determining (206) a unique set of non-predominant sequences to be integrated into each of the number of non-predominant sequence sprockets intended for the chain or belt drive, such that no non-predominant sequence sprocket has the same engine cycle sequences; Integrating (207) a unique set of at least one non-predominant sequence into a radial variation pattern of a sprocket for each of the non-predominant sequence sprockets; and Installing (208) the non-predominant sequence sprockets into the chain or belt drive of the internal combustion engine.

The barrier gate comprises a driving motor fixedly connected to one side of the top of a riverway, an output shaft of the driving motor is fixedly connected with a first rotating rod, a mounting seat is mounted in the riverway through a first supporting seat and a second supporting seat, then the driving motor is started, and the first rotating rod is fixedly connected with a second rotating rod. A driving motor drives a first rotating rod to rotate through a first supporting seat, the first rotating rod drives first gears on the two sides to rotate, the first gears drive a second gear at the bottom to rotate through a chain, the second gear drives a second rotating rod to rotate through a second supporting seat, meanwhile, the chain drives a fixing rod to move, and the fixing rod drives a connecting rod to move. The connecting rod drives the collecting rod to move, sundries intercepted at the trash rack can be cleaned and fished through the collecting rod, the collecting rod can be turned over through the chain, and the cleaned and fished sundries are conveyed out of the river channel through the collecting rod to be collected and cleaned, so that the purposes of cleaning the sundries in the river channel, preventing the river channel from being blocked and keeping water flow smooth can be achieved.

The utility model discloses a chain transmission type flue-cured tobacco loading and unloading machine which comprises a moving trolley, a lifting table is installed above the moving trolley, a supporting frame is fixedly installed at the rear end of the lifting table, a connecting cross rod is connected to the inner side of the upper end of the supporting frame in a sliding mode, and a conveying frame is rotationally connected to the middle of the connecting cross rod. A transmission chain is movably installed on the outer side of the transmission frame, a plurality of transmission bases are fixedly installed on the outer side of the transmission chain, positioning grooves are formed in the two sides of each transmission base, a tobacco leaf clamping strip is installed between every two adjacent transmission bases, and two supporting bases are fixedly installed in the middle of the transmission frame. And a second protective cover is fixedly mounted at the front end of the transmission frame. The tobacco leaf conveying device has the advantages that by automatically lifting personnel and stably conveying tobacco leaves, the personnel can conveniently hang the tobacco leaves at different heights, the baking efficiency is improved, the tobacco leaves can be conveniently and rapidly loaded and unloaded, and the tobacco leaf conveying device is convenient to use.

The utility model discloses a kind of hole tray seedling transplanting machine with electric control pneumatic seedling taking device, belong to agricultural machinery technical field, to solve the problem of low degree of automation, poor efficiency, great labor intensity caused by the existing hole tray seedling transplanting machine relies on manual seedling taking and seedling throwing.This device includes transplanting machine main body, and is equipped on its seedling sending mechanism, seedling taking mechanism, seedling cup group and electric control system;Seedling sending mechanism realizes seedling tray accurate conveying by chain seedling sending group and drive assembly;Seedling taking mechanism completes seedling grabbing and delivery by the aid of translation assembly, opening and closing assembly and pneumatic gripper;Seedling cup group is in rectangular array around seedling sending mechanism and is moved by chain drive;Electric control system controls the collaborative operation of each component by PLC, sensor and man-machine interface control interface.This utility model adopts electric control pneumatic seedling design, realizes seedling tray conveying, seedling grabbing, accurate seedling throwing whole-process automation, improves transplanting efficiency, reduces labor intensity, reduces seedling damage rate, applicable to large-scale hole tray seedling transplanting operation.

The utility model discloses an adjustable hygienic product embossing device, and relates to the technical field of hygienic product embossing. The first motor drives the driving wheel to rotate so as to drive the toothed chain to rotate on the two supporting wheels, the toothed chain drives the driven wheel of the moving assembly to rotate, the driven wheel is fixedly connected with the threaded column, the threaded column is driven by the driven wheel to rotate and moves on the supporting plate at the same time, and finally the second motor and the auxiliary part are driven to move. And the distance between the knurling wheel and the auxiliary wheel is further adjusted. The distance between the knurling wheel and the auxiliary wheel can be flexibly adjusted according to the thickness of a hygienic product material, a production line does not need to be frequently replaced, and the production efficiency is improved.

The invention relates to a single-motor-driven double-opening vertical hinged door driving device capable of being synchronously and independently opened and closed, which comprises a driving motor (1) and a synchronous transmission device (2), the driving motor (1) is provided with two output shafts (11) with opposite rotating directions, clutches (3) are respectively arranged on the two output shafts (11), the output part of one clutch (3) is connected with a door shaft (4) of one side door, and the output part of the other clutch (3) is connected with a door shaft (5) of the other side door. Or the clutch (3) is connected with the door spindle (4) of one side door through a synchronous transmission device (2), the output part of the other clutch (3) is connected with the door spindle (4) of the other side door through the synchronous transmission device (2), and the synchronous transmission device (2) is composed of two transmission wheels, a transmission belt, a transmission chain, a transmission rope or a transmission rod which are arranged on the output part of the clutch (3) and the door spindle (4) respectively. The door is better in using effect and convenient to control, the two doors can be opened and closed synchronously, and one door can be opened and closed independently. And when the two doors are not synchronous, the two doors are easier to recover to a synchronous state.

The utility model relates to the technical field of universal crushers, in particular to an anti-residue universal material crusher. The device comprises a crushing operation shell, a discharging shell is arranged at the bottom of the crushing operation shell, a supporting table is arranged on the outer wall of the crushing operation shell, a cylindrical screen is movably arranged in the crushing operation shell, a crushing assembly is further arranged in the crushing operation shell, a screen rotating assembly is arranged below the cylindrical screen, and the screen rotating assembly is in transmission connection with the cylindrical screen. The screen rotating assembly is further in transmission connection with the smashing assembly, and a feeding assembly is arranged on the front face of the smashing operation shell. Through the matched design of the screen rotating assembly and the scrapers, the motor drives the cylindrical screen to rotate at a low speed through transmission of the chain wheel and the chain while driving the crushing operation, the scrapers tightly attached to the inner wall of the screen continuously scrape, powdery materials adsorbed or adhered to the surface of the screen due to static electricity can be removed in time, and the problem of screen blockage is effectively solved through the design; and the screen is always kept in a good transparent state.

1. Name of the designed product: multiple speed chain driving mechanism (big head small tail). 2. Use of the designed product: used for driving chain transmission to convey goods. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.