1318 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 invention belongs to the technical field of mechanical lifting platforms, and particularly relates to a pushing chain type synchronous lifting platform and a control method.The synchronous lifting platform is formed by combining two lifting platform bodies, and each lifting platform body comprises a pushing chain driving system and a guiding mechanism; the multi-axis virtual axis electronic gear is combined with a fuzzy reasoning library to realize synchronous accurate control of the double servo motors, and the synchronous control system has the advantages of high speed, high bearing capacity, multi-point control, high precision, low initial height, large stroke, small occupied space, no maintenance, high efficiency, energy conservation and the like.

The invention belongs to the technical field of welding equipment, and particularly relates to electric automobile body welding equipment which comprises a mechanical arm and a control end arranged on the side wall of the mechanical arm, the mechanical arm is electrically connected with the control end, two welding units are installed at the driving end of the mechanical arm, and each welding unit comprises a shell, the shell is installed at the driving end of the mechanical arm, a plurality of electrode tips are arranged in the shell, a chain driving assembly is installed in the shell, and each electrode tip is provided with an elastic connecting assembly. The problems of oxidation, too large roughness and the like of the electrode tips due to too high high-frequency welding temperature can be avoided as much as possible in the vehicle body resistance welding process, all the electrode tips can be polished, the polishing time can be automatically controlled, meanwhile, the electrode tips can be rapidly cooled, oxidation films are prevented from being generated, the stability of the electrode tips in use is improved, and the service life of the electrode tips is prolonged. And the welding quality is improved.

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 utility model discloses PE pipe polishing equipment which comprises a feeding assembly, and outer polishing assemblies are arranged at one end of the feeding assembly side by side. Inner polishing assemblies are arranged at the ends, away from the feeding assembly, of the outer polishing assemblies side by side. The outer polishing assembly and the inner polishing assembly are arranged at the same time, synchronous polishing treatment on the inner surface and the outer surface of the PE pipe is achieved, the polishing period is remarkably shortened, and the production efficiency is improved; two polishing rollers in the outer polishing assembly are driven in a chain transmission mode, and the rotating speed and the rotating direction can be flexibly adjusted so as to meet the polishing requirements of PE pipes of different materials and wall thicknesses. Meanwhile, the inner polishing assembly can accurately adjust the position and height of a polishing wheel through cooperation of a linear sliding table and a worm gear lead screw lifting machine, the polishing machine is suitable for polishing PE pipes of various pipe diameters, the frequency of replacing a polishing head is reduced, the cost is greatly reduced, and therefore an efficient, economical and reliable solution is provided for polishing treatment of the PE pipes.

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.

The invention relates to the technical field of superfine powder long nozzle magnesia carbon brick filling, in particular to a superfine powder long nozzle magnesia carbon brick matched filling device and method.The superfine powder long nozzle magnesia carbon brick matched filling device comprises a rack, a lifting rotating platform, a pneumatic tamping device, a guiding device, a lifting transmission device and a rotating hydraulic device; guide rails are arranged on the inner sides of stand columns of the machine frame corresponding to the four corners of the lifting rotating platform, a guide device is arranged outside a box body of the lifting rotating platform, a rotating hydraulic device is arranged in the box body of the lifting rotating platform, and lifting transmission devices are arranged on the side faces of the two sides of the machine frame and drive the lifting rotating platform to ascend and descend through chain transmission. And pneumatic tamping devices are arranged on the rack in the longitudinal direction and the transverse direction of the top table top of the rack. The long-nozzle magnesia carbon brick tamping machine has the beneficial effects that the long-nozzle magnesia carbon bricks are high in mass body density, good in overall uniformity, stable and reliable in quality and long in service life.

The invention relates to the technical field of scraper conveyors for coal, in particular to a scraper conveyor for a large-dip-angle coal mining face, and aims to solve the problems that in the prior art, due to coal accumulation, a scraper chain cannot move smoothly, and then the working efficiency is reduced. A motor A drives a chain wheel to rotate, a chain drives a scraper to convey coal, an elastic plate on the scraper drives a scraping assembly to move, a roller of the scraping assembly rolls to drive a reciprocating lead screw to rotate, a guide block makes a shovel plate A and a fixed shovel plate B shovel compact coal slime in a reciprocating mode through attraction and repulsive force of a magnetic plate, and a T-shaped block and a compression spring assist the shovel plate to reset. And when the scraper blade is close to the next section of ledge seat, the elastic plate retracts due to magnetic repulsion, the scraping assembly resets by means of the spring rod, and when the scraper blade reaches the next group, the elastic plate pops up to drive a new assembly to clean coal, so that the working efficiency is improved.

The invention provides a photovoltaic container, a photovoltaic power station and a photovoltaic deployment system. The photovoltaic container comprises a container body, a photovoltaic panel assembly, a guide rail assembly and a folding and unfolding transmission assembly. The container includes a chassis. The photovoltaic panel assembly in the unfolded state is suitable for being arranged on the outer portion of the container in the width direction. The photovoltaic panel assembly in the folded state is suitable for being contained in the container. The photovoltaic panel assembly includes a photovoltaic panel member. The lower part of the photovoltaic panel component is provided with a guide wheel component and a walking chain wheel. The guide rail assembly in the assembled state extends to the outside of the chassis in the width direction and is connected to the guide wheel component. The take-up and pay-off transmission assembly comprises a chain transmission component. A chain drive member is removably connected to the chassis. The chain drive member includes a chain adapted to engage to the running sprocket. The folding and unfolding transmission assembly comprises a driving connecting part. The drive connection is adapted to be removably connected to a motor. According to the invention, the motor does not need to be arranged in the photovoltaic container, the single-container structure can be simplified, and the cost is reduced.

The utility model discloses an automatic continuous bean curd squeezing device which comprises a squeezing mold, a pull-out mechanism arranged at the bottom of the squeezing mold and lifting mechanisms arranged on the two sides of the squeezing mold, and translation mechanisms are fixed to the output ends of the lifting mechanisms. The squeezing mold comprises a squeezing supporting mold frame, a turnover basket is placed in the squeezing supporting mold frame, the upper edge of the squeezing supporting mold frame extends outwards to form a first edge, a T-shaped limiting rod is arranged on the outer wall of the squeezing supporting mold frame, and water filtering holes are formed in the squeezing supporting mold frame and the turnover basket; the pull-out mechanism comprises two fixing plates which are arranged at the bottom of the squeezing mold in a spaced mode, a third driving shaft and a third driven shaft are transversely installed between the two fixing plates, the third driving shaft and the third driven shaft are in transmission connection through two pull-out chains, and a push-out rod is fixed to each pull-out chain and used for squeezing the squeezing mold; through the design, the technical problems of low degree of automation, time consumption and labor consumption of existing reverse squeezing are solved.

The utility model discloses a split type automobile brake detection device in the field of motor vehicle detection devices, which is characterized in that a main roller and an auxiliary roller are rotatably arranged on a base, and the shaft ends of the main roller and the auxiliary roller are in transmission connection through a first chain transmission assembly; a driving motor is arranged on the front side of the machine base, the main shaft end of the driving motor is in transmission connection with the shaft end of the main roller through a second chain transmission assembly, the first chain transmission assembly and the second chain transmission assembly are arranged at the two ends of the main roller respectively, and the main roller, the auxiliary roller and the axis of the driving motor are parallel. A bearing support is arranged above the driving motor, the two sides of the bearing support are fixed to the machine base, protection plates are vertically arranged on the two sides of the first chain transmission assembly and the two sides of the second chain transmission assembly respectively, side edge covering parts are arranged above the protection plates, and a middle covering part is arranged above the bearing support. According to the device, the arrangement size in the width direction can be reduced, so that the device can be arranged in a width-limited space, and the device is suitable for detection of large-scale and heavy-load vehicles.

The invention discloses a telescopic arm driven by a drag chain and a wheel arm robot. The telescopic arm driven by the drag chain comprises a multi-stage telescopic device and a drag chain box. The multi-stage telescopic device comprises multi-stage telescopic parts, a linear guide rail is transversely arranged between every two adjacent telescopic parts in the multi-stage telescopic parts, and the lowest telescopic part is fixedly connected with the drag chain box. A drag chain, a driving part and a rotating part are arranged in the drag chain box, one end of the drag chain is fixedly connected to the rotating part, the other end of the drag chain bypasses the driving part, then transversely extends and is fixedly connected with the uppermost telescopic part in the multi-stage telescopic parts, and a cable is arranged in the drag chain. By introducing a triangular stable structure formed by the multi-stage telescopic parts provided with the linear guide rails, the transverse stress capacity of the telescopic arm is improved, and the stability and strength of the telescopic arm in the transverse stretching and retracting process are improved; the cable is protected in the drag chain, so that the service life of the cable is prolonged under the condition that the cable can provide power and signals for an actuator.

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 steel cylinder welding, in particular to fire extinguisher steel cylinder circular seam automatic welding equipment which comprises a base, supporting seats are fixedly installed on the two sides of the top of the base, a plurality of guide sliding rods are fixedly installed between the two supporting seats, and movable seats are arranged on the outer walls of the guide sliding rods in a sleeved mode. The number of the movable seats is two. According to the automatic welding equipment for the circular seam of the fire extinguisher steel cylinder, the base, the supporting base, the air cylinder, the movable base, a guide sliding rod, a rotating shaft, a clamping mechanism, a welding gun, an electric telescopic rod, an electric sliding block, a guide rail, a fixing frame, a chain transmission mechanism, a supporting plate and a synchronous rotating mechanism are used in cooperation; and automatic angle adjustment in the steel cylinder clamping and fixing process and the welding process is achieved. Compared with traditional manual welding, production efficiency and welding seam quality are remarkably improved, consistency and sealing performance of welding seams are guaranteed, and welding defects are reduced.

A removable accessory for cancelling or reducing pedal kickback in MTB bicycles having a frame, a front and a rear wheel, a suspension of the rear wheel, a crankset with at least one front sprocket and at least one rear sprocket set to accommodate a chain drive between the front sprocket and the rear sprocket. The accessory includes a substantially rectangular supporting plate having, at one of its long sides, two holes or notches for the passage of means of attachment in corresponding receiving seats arranged around the bicycle crankset; a pulley mounted swiveling on a transverse pin attached near a free end of the plate that is cantilevered upwardly in a direction in which the pulley is engageable in the chain when the plate is mounted on the bicycle and widens the closed ring of the chain.

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 invention relates to the technical field of robots, in particular to a chain transmission dexterous hand finger structure which comprises a connecting base, a pin shaft is rotationally connected to the connecting base and connected with a near knuckle, the near knuckle is connected with a chain wheel through a driving part, the chain wheel is in transmission connection with a second chain wheel through a chain, and the second chain wheel is connected with a middle knuckle through a second pin shaft. The middle knuckle is connected with a third chain wheel through a second driving piece, the third chain wheel is in transmission connection with a fourth chain wheel through a second chain, the fourth chain wheel is connected with the fingertip through a third pin shaft, and the device achieves rotation of the fingers of the dexterous hand in a chain transmission mode, and compared with a tendon rope and connecting rod transmission mode in the prior art, the device is small in size and convenient to transmit torque; the response speed and the working efficiency are high.

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 discloses an anchoring speed limiting device for a ship anchor gear, and relates to the technical field of anchoring equipment, the anchoring speed limiting device comprises a bottom layer mounting plate, a first supporting plate and a second supporting plate are fixedly mounted on the bottom layer mounting plate, an energy storage assembly I is mounted on the first supporting plate, and an energy storage assembly II is mounted on the second supporting plate; a matching chuck is arranged between the first supporting plate and the second supporting plate, a groove is formed in the matching chuck, the anchor chain is matched with the groove to drive the matching chuck to rotate, and the matching chuck drives the first energy storage assembly and the second energy storage assembly to store energy. According to the technical scheme, during anchoring, the chain drives the matched chuck to rotate, the matched chuck rotates to drive the two energy storage assemblies to store energy, the rotating speed of the matched chuck is controlled through the energy storage assemblies, and the situation that an anchor chain sinks too fast and is out of control, and damage is caused is prevented.

An irrigation and soil loosening multifunctional seeder comprises a main frame, wheels, a furrow opener, a soil loosening and pressing device, a seed feeding box, a seeding device, a water storage device and an irrigation device, furrow opening, seeding, irrigation and soil loosening and pressing are integrated, and the wheels and pressing rollers are synchronously driven to move through chain transmission. Power for the irrigation device and the seeding device to work through rotation is provided by water spraying of the nozzles, it can be guaranteed that seeding and irrigation work are carried out in a matched mode at the needed frequency only by adjusting the water spraying frequency of the nozzles, and the whole device not only facilitates effective and stable mechanical work, but also is compact in structure, easy to operate and easy to maintain; a plurality of irrigation devices and seeding devices can be arranged side by side, multi-row operation can be realized only by additionally arranging nozzles on the water storage tank correspondingly, in addition, while the compacting function is achieved, soil can be loosened, large soil blocks can be crushed, the air permeability of the soil is improved, the survival rate of seeds is greatly improved, and the operation efficiency is remarkably improved.

The invention relates to the field of robots, and discloses a chain-driven double mechanical arm which comprises two groups of forking arm structures arranged on a support, and each group of forking arm structure sequentially comprises a forking large arm, a forking small arm arranged at the tail end of the forking large arm and a fork hand arranged at the tail end of the forking small arm; by arranging a three-stage chain linkage system of the chain wheel a, the chain wheel b and the chain wheel c, precise cooperative control between the small arm and the fork hand is achieved. Compared with a traditional structure which depends on multiple servo direct driving, according to the scheme, the number of redundant motors is reduced, the control complexity is lowered, real-time matching of the forearm posture and the end executor can be achieved through unified chain driving, and the response speed and synchronous stability of the multi-joint mechanism in the high-speed dynamic state are effectively improved.

The utility model discloses a floor back grooving device which comprises a rack, a chain plate driving assembly, a pair of chain plate tensioning adjusting mechanisms, a movable chain plate, an upper pressing adjusting mechanism, an upper pressing assembly, a conveying wheel set, a grooving driving source lifting transmission part, a grooving driving source mounting plate, a mounting plate adjusting mechanism and a grooving driving source. The rack comprises a base and side plates arranged on the two sides of the base in parallel. The chain plate driving assembly is fixedly mounted on the side plate on one side, and a driving part penetrating through the two side plates is arranged on the chain plate driving assembly; the pair of chain plate tensioning adjusting mechanisms is movably installed on the corresponding side plates, and the chain plate tensioning adjusting mechanisms are provided with driven wheels on the inner sides of the corresponding side plates. The movable chain plate is movably arranged between the pair of side plates, and one end of the movable chain plate is arranged on the driving part of the chain plate driving assembly in a sleeving mode. The floor grooving machine can realize grooving on the back of the floor and is convenient to operate and maintain.

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.