1480 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 discloses a planter with a righting structure in the technical field of planting righting, and the planter comprises a walking mechanism, a righting assembly installed at the tail end of the walking mechanism, a guide pipe, a ditching structure and a soil covering structure, and the righting assembly comprises a rack installed at the tail end of the walking mechanism; the chain transmission structures are mounted on the two sides of the rack in pairs; the driving part is mounted on the rack; a plurality of groups of centralizing frames are provided, each group comprises two pairs of centralizing frames, and the two pairs of centralizing frames are rotationally mounted on the chain transmission structures on the two sides respectively; the distance adjusting structure is used for driving the pair of righting frames on the same chain transmission structure to get close to each other; and the pressure regulator is arranged between the righting frame and the chain transmission structure and is used for regulating the clamping force of the righting frame to the seedlings according to the deflection angle of the righting frame. Through cooperation of the righting frame and the distance adjusting structure, the seedlings are righting, it is ensured that the seedlings are kept in a vertical state in the planting process, the situation that the seedlings incline due to influence of external factors is avoided, and therefore the survival rate of the seedlings is increased.

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 utility model discloses an integrated air floatation device for solid-liquid separation, which comprises a shell and a baffle plate for separating the shell, the baffle plate divides the interior of the shell into an air floatation area and a collection area, two rotating shafts are rotationally erected at the top of the shell and are symmetrically distributed, and the two rotating shafts are arranged in the shell. The outer surface of each rotating shaft is fixedly sleeved with two transmission gears, a transmission chain is assembled between the two transmission gears located on the same side in a transmission mode, a slag scraping plate is arranged in the shell, and the two transmission chains drive the slag scraping plate to move at the same time. According to the air flotation device, scum remaining on the air flotation device can be removed through the scraping unit in the solid-liquid separation process, meanwhile, under the action of the vibration unit, the action effect of the scraping unit can be enhanced, scum which cannot be directly removed in the scraping unit can be removed, and the working efficiency of the air flotation device is improved; the method has great significance in the actual production process.

The utility model belongs to the technical field of industrial sewage treatment, and particularly relates to a novel industrial sewage air flotation slag remover which comprises a sewage treatment box, a collecting chamber is arranged on one side in the sewage treatment box, and a bent partition plate is welded to the position, close to the collecting chamber, in the sewage treatment box. A cleaning cavity is formed in the other side of the interior of the sewage treatment tank, and a water supply pipe is mounted in the middle of the cleaning cavity in a penetrating manner. Through use of a microbubble generator, suspended matters and precipitates in sewage can float on the surface of the sewage to form scum, through use of a chain transmission assembly, a rubber scraper blade can be driven to rotate to clean the scum into a collection chamber, and through cooperative use of a water pump, a water inlet pipe, a water outlet pipe, a water supply pipe and a flushing nozzle, the scum can be collected. According to the air-floating slag remover, floating slag on the surface of sewage can be pushed to move in the direction close to the collecting cavity, floating impurities are prevented from being accumulated on one side of the device, meanwhile, a rubber scraper can be flushed, and the use efficiency of the air-floating slag remover can be improved.

The invention belongs to the technical field of lifting operation platforms, and particularly relates to a pushing chain type lifting operation platform which comprises a pushing chain lifting mast, the pushing chain lifting mast comprises a telescopic mast and a pushing chain driving system, and an operation platform is installed at the top end of the telescopic mast. According to the pushing chain type lifting operation platform, a variable frequency motor drives a pushing chain to conduct high-speed and constant lifting motion, a mast is vertically pushed and driven to ascend and descend, so that the operation platform on the top of the mast is driven to ascend and descend, the operation platform can stop at any height without sliding down, pure mechanical driving is adopted, and the risk of hydraulic oil leakage is avoided; and meanwhile, the problems that the transmission efficiency is low, the lifting speed is low, the speed is not constant, the descending speed is difficult to control, the stopping precision is low, and oil leakage possibly pollutes the environment are solved.

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.

The invention discloses a water pollution collaborative treatment device and a method for using the same. The device comprises a floating object collecting mechanism, a microbial purification mechanism, a plant purification mechanism and a suspended filtering mechanism which are arranged in a river channel and used in coordination with each other. The floating object collecting mechanism comprises a floating collecting support shell floating on the water surface, the upstream end of the floating collecting support shell is rotatably provided with a horizontally arranged chain driving wheel, the downstream end of the floating collecting support shell is rotatably provided with a horizontally arranged chain driven wheel, a collection driving chain is provided for transmission connection between the chain driving wheel and the chain driven wheel, and a plurality of floating object blocking rods are fixed to the outside of the collection driving chain. The invention has a highly efficient pollution treatment capability, can effectively remove various pollutants in water, such as suspended solids, organic matter, nutrients such as nitrogen and phosphorus, and harmful substances such as heavy metals, has targeted treatment means for different types of pollutants, and ensures that the water quality is significantly 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 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 utility model relates to the technical field of vehicles, in particular to a chain transmission structure, an engine and a vehicle, the chain transmission structure comprises a chain and a chain wheel, the chain is used for being meshed with the chain wheel, the pitch of the chain wheel is Pa, the pitch of the chain is Pb, the ratio of the pitch of the chain wheel to the pitch of the chain is n, and n = Pa / Pb; n is greater than 0.97 and less than 1. By means of the arrangement, the pitch of the chain wheel is smaller than that of a chain wheel in the prior art, and meshing order noise in the meshing process of the chain and the chain wheel can be remarkably reduced. And moreover, the ratio of the pitch of the chain wheel to the pitch of the chain is between 0.97 and 1, so that the effect of improving the meshing order noise is relatively good.

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.

The invention discloses a dynamic laser measuring device and method for highway investigation, and relates to the technical field of laser measurement, and the dynamic laser measuring device comprises an automatic guided vehicle capable of autonomously moving and a measuring module installed on the automatic guided vehicle. The measuring module comprises a chain type transmission mechanism installed on the top of the automatic guiding vehicle through a height adjusting assembly and a dynamic laser measuring assembly installed on the chain type transmission mechanism. The chain type transmission mechanism comprises a rotary seat and a chain type rotary assembly, and the chain type rotary assembly is configured to drive the rotary seat to do rotary motion of a closed path in a set plane. The chain type transmission mechanism drives the laser distance measuring sensor to circularly move in a closed track, the automatic guiding vehicle moves at a constant speed, transverse section scanning and longitudinal section measurement are alternately completed in the continuous moving process of the vehicle, the shackle that traditional equipment needs to be started and stopped frequently is broken away, and the working efficiency is improved. Uninterrupted three-dimensional flatness data acquisition of the whole section of the expressway is realized, and the measurement efficiency is improved.

A high-speed silent chain transmission system for an electric vehicle, relating to the field of chain transmission. The high-speed silent chain transmission system comprises a chain (1) and a sprocket wheel (2); the chain (1) comprises inner chain links (11); every two adjacent inner chain links (11) are connected by means of an outer chain plate (12); each inner chain link (11) comprises an inner chain plate (13); the inner side of the inner chain plate (13) is provided with two inner engagement teeth (132); each inner engagement tooth (132) has two engagement surfaces (131); the sprocket wheel (2) is provided with outer engagement teeth (21); each inner chain link (11) is internally provided with at least one shock absorption chain plate (14), and the inner side of the shock absorption chain plate (14) is provided with shock absorption teeth (141); each shock absorption tooth (141) has shock absorption surfaces (142), and a plurality of engagement protrusions (145) are distribution on each shock absorption surface (142); a shock absorption pad (3) made of an elastic material is provided on the sprocket wheel (2), and the shock absorption pad (3) is located on the side surfaces of the outer engagement teeth (21). The high-speed silent chain transmission system can adjust the damping characteristic of the chain, reduce the noise of the chain transmission system in a shock absorption mode, and expand the application scenario of the chain transmission system.

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.