8465 results about "Sprocket" patented technology

A crossbow with a de-cocking crank mechanism having sprockets preferably includes a cranking mechanism, which utilizes a clutch sprocket and clutch assembly axial to a drive gear, and a one-way bearing axial to a bearing sprocket to cock a crossbow. The clutch assembly includes a clutch sprocket, a flywheel surface, a friction disc, and a pressure plate. The use of a one-way bearing may control the rotation of the drive unit used to wind (take-up) an elongated connecting device. Functional properties of a crank mechanism for the winding and unwinding of the elongated connecting device such as a rope, chord or the like device for pulling a secondary object from a first position to a second position are well known in the art.

The invention belongs to the technical field of optical fiber laser welding, and particularly relates to optical fiber laser welding equipment which comprises a rack, a conveying mechanism used for conveying a battery module is arranged in the rack, an XYZ-axis moving mechanism is installed on one side of the rack, a laser welding device is installed on the XYZ-axis moving mechanism, and a conveying belt is connected to one side of the end of the rack. The conveying mechanism comprises two sets of transmission shafts, the two sets of transmission shafts are rotationally installed in the rack, chain wheels are installed on the two sets of transmission shafts, the two sets of chain wheels are meshed with a chain, a plurality of sets of shifting forks used for containing battery modules are arranged around the chain, and one ends of the shifting forks are fixedly connected with the chain. According to the battery module welding device, feeding, welding and discharging of the battery module can be conducted at the same time, the automation rate of the device is increased, meanwhile, the battery module can be continuously welded, and the welding efficiency of the battery module is improved.

A polyimide film production line, comprising a steel belt casting machine (A), a peeling transition unit (B), a transverse stretching machine (C), an inspection unit (D), an annealing unit (E) and a winding unit (F) which are sequentially arranged, wherein a drying oven (1) of the steel belt casting machine (A) comprises a frame (11), outer thermally-insulating structures (5) arranged on two sides of the frame (11), and an upper air duct assembly (193) and a lower air duct assembly (194) which are arranged on the frame (11); the frame (11) comprises a bottom thermally-insulating layer (111), a middle-lower heat thermally-insulating layer (112), a middle-upper thermally-insulating layer (113) and a top thermally-insulating layer (114) which are sequentially spaced apart from each other from bottom to top and are parallel to each other; and the transverse stretching machine (C) comprises a transverse pulling box body (7) and a conveying system, and inner tracks (85) located in the transverse pulling box body (7) and outer tracks (86) located outside the transverse pulling box body (7) are provided between a driving sprocket assembly (82) and a driven sprocket assembly (81) of the conveying system. The polyimide film production line effectively reduces the total heating space in the drying box (1) and in the transverse pulling box body (7), the structure is more compact, and the heat loss during heat transfer is reduced, such that the energy consumption can be reduced, and the production cost is reduced.

The invention discloses a laser cutting platform cleaning device which comprises a supporting frame, a driving chain shaft and a driven chain shaft are arranged on the supporting frame, the driving chain shaft and the driven chain shaft are in transmission through a supporting chain wheel and a supporting chain, a supporting plate is fixed to chain links of the chain, and supporting teeth are vertically installed on the plate. A cleaning assembly is arranged on one side of the supporting frame and is in linkage with the driving chain shaft through a speed changing assembly. The cleaning assembly comprises a cleaning supporting shaft, a cleaning frame, a cleaning shaft and a polishing fluted disc, the driving motor drives the polishing fluted disc to rotate through transmission of a belt and a chain, and the telescopic cylinder drives the cleaning frame to swing to adjust the positions of the polishing fluted disc and supporting teeth. The speed change assembly is engaged with the reduction gear set or the synchronous gear through switching of the clutch gear, and the two modes of low-speed grinding of the driving chain shaft and high-speed supporting tooth switching are achieved. The device further comprises a supporting guide rail, a sliding block, a protective cover and adjustable supporting legs. The device can automatically switch a supporting tooth cleaning mode and a rapid replacement mode, is compact in structure and meets different operation requirements.

The invention belongs to the technical field of powder metallurgy production, and discloses a silver tungsten carbide graphite waste recovery treatment device and method.The silver tungsten carbide graphite waste recovery treatment device comprises a treatment box, a conveying module is arranged on the outer wall of the treatment box, a discharging port is formed in the outer wall of the treatment box, and smashing rollers are arranged on the inner wall of the treatment box; a downward pressing mechanism is arranged on the inner wall of the treatment box, a shielding mechanism is arranged on the outer wall of the treatment box, and a screening mechanism is arranged on the outer wall of the treatment box; the screening mechanism comprises a motor, an output shaft of the motor is fixedly connected with a chain wheel A, and the outer wall of the chain wheel A is in transmission connection with a chain wheel B through a chain; through cooperation of the motor and the trapezoidal block, waste materials crushed by the crushing roller can fall on the screen, and the waste materials can be stacked more uniformly through continuous movement of the moving frame and the screen, so that the problem that the screening efficiency is affected due to the fact that the waste materials fall on the screen and then are stacked at one position is avoided.

The invention discloses road and bridge construction concrete detection equipment, and relates to the field of concrete detection.The road and bridge construction concrete detection equipment comprises a sample seat and a movable pressing plate, vertical plates are fixed to the two sides of the upper surface of the sample seat, top plates are fixed to the top ends of the two vertical plates, and a limiting groove used for placing a concrete block is formed in the center of the upper surface of the sample seat; the pressing plate is located above the limiting groove, a groove is formed in the center of the upper surface of the pressing plate, a liquid storage cylinder is fixed in the groove, and liquid penetrating holes are formed in the positions, located in the groove, of the lower surface of the pressing plate and the bottom end of the liquid storage cylinder; a pressure applying assembly and two transmission assemblies are arranged above the liquid storage cylinder, the two transmission assemblies are symmetrically arranged on the pressure applying assembly, and inner chain wheel teeth are arranged on spokes corresponding to the two rope winding rollers respectively. And the stress environment of the road and bridge concrete in real service is restored, and the comprehensiveness and reliability of detection data are improved.

A blind cord spool structure has a cord spool. The cord spool includes a bottom case, force-receiving wheel, driven chainwheel, top case, two rotatable units, and two spool rollers. The bottom case is in long rectangular shape. The bottom case and the top case allow the force-receiving wheel, driven chainwheel, rotatable units and spool rollers to be fitted together. The force-receiving wheel meshes with the driven chainwheel through a plurality of planetary gears and interlocks with the spool rollers and rotatable units through a driven gear. The high speed reduction ratio of the planetary gears effectively reduces the required weight of a volute spiral spring and reduces the operation cost of the volute spiral spring. With the bottom case being in long rectangular shape, the force-receiving wheel, rotatable units and spool rollers can be collectively mounted on the same standard surface, allowing the cord spool to be structurally simple.

The invention relates to the technical field of fire escape, in particular to a multi-user shared unpowered circulating hanging chain high-rise emergency constant-speed descent control machine which comprises a box body and an outer frame, after the front end of the outer frame extends out of a building, the box body is located outside the building, and a chain transmission mechanism comprises a first chain wheel, a second chain wheel and a third chain wheel. Third mounting blocks are arranged on the two sides of the third chain wheel on the third transmission shaft and slidably connected with the floating sliding rails, first supporting springs are fixed to the bottoms of the third mounting blocks, and a chain extends into the box body from the bottom of the box body, firstly bypasses the top of the third chain wheel and then bypasses the bottom of the second chain wheel; then bypasses the top of the first chain wheel and downwards extends out of the box body; the first transmission shaft is connected with a speed reduction device for automatically adjusting the rotating speed of the first transmission shaft according to the total weight of escape persons on the chain and an illumination assembly for automatically generating electricity. The device has the technical effects that the device can be used by multiple persons, and the manufacturing and maintenance cost is low.

The invention provides intelligent suspension conveying equipment for textiles, and relates to the technical field of textile processing. The intelligent suspension conveying equipment for the textiles comprises a supporting shell and a drag chain mechanism, the drag chain mechanism is composed of a motor and a chain wheel, the drag chain mechanism is arranged on the inner side of the supporting shell, a drag chain is arranged on the outer side of the drag chain mechanism, a plurality of bearing rolling shafts are connected to the outer side of the drag chain, a moving rail is arranged on the inner side of the supporting shell, and the bearing rolling shafts roll on the surface of the moving rail. The bearing rolling shaft is sleeved with a bearing sleeve, and the bearing rolling shaft is sleeved with the bearing sleeve in a sliding mode to correct the sagging angle. According to the intelligent suspension conveying equipment for the textiles, the moving track is arranged on the inner side of the supporting shell, and a bearing rolling shaft rolls on the surface of the moving track, so that the bearing rolling shaft cannot influence movement when being dragged by falling, and the effects that stable transportation is achieved, and the dragging chain cannot be derailed due to stress of a hook are achieved; the problem that when a hook is stressed, a transmission mechanism is stressed to derail is solved.

The invention relates to the technical field of flower cultivation, and discloses an efficient hippeastrum seedling cultivation device and an optimized cultivation method.The efficient hippeastrum seedling cultivation device comprises a box body, a motor is arranged on the inner wall of the box body, the output end of the motor penetrates through a fixing plate to be fixedly provided with a first chain wheel, and a partition plate is fixedly arranged at the bottom end of the fixing plate; a chain is connected to the tooth end of the first chain wheel, a second chain wheel is connected to one section of the chain, a rotating shaft is fixedly arranged in the middle of the second chain wheel, one end of the rotating shaft is rotationally connected to one side of a fixing plate, a guide rail is arranged on the side wall of the fixing plate, and a cultivation box is arranged on one side of the chain through a plurality of second fixing rods. Dynamic and stable cultivation of hippeastrum hippeastrum seedlings in the box body is achieved through cooperative operation of the motor, the chain wheel, the chain, the cultivation box, the guiding and stabilizing structure and other components, the cultivation box is always kept in a stable state that an opening and leakage holes face upwards, and healthy growth of the seedlings is facilitated. The problem that a cultivation container is unstable in traditional dynamic cultivation is solved.

The squirrel-cage type overturning demolding machine is provided with a supporting device, an overturning mechanism, a vibration demolding mechanism and a conveying mechanism, wherein the conveying mechanism is used for preventing the components from falling off and falling off in the overturning process, and finished products are laterally output along a production line after demolding; the turnover mechanism is provided with turnover discs, a driving motor, a chain wheel, a chain, a tensioner, an upper fixing frame and a lower fixing frame, the chain connected with the chain wheel bypasses one part of the outer circumferential surface of the corresponding turnover disc, the two free ends of the chain are connected with the tensioner, and the two turnover discs are limited and supported by the supporting device; the vibration demolding mechanism is installed on the lower fixing frame, and the conveying mechanism is installed on the upper fixing frame. The tension of the transmission body for driving the overturning body (overturning disc) is easy to adjust, material receiving and conveying after stable falling of components are achieved, the situation that other equipment needs to be matched with a demolding machine for operation is avoided, reliability is high, automatic batch demolding of small prefabricated components is achieved, and the operation efficiency of the whole production line is improved by 12% or above.

A device for retaining a bicycle chain on a sprocket includes a base plate defining a plurality of fastener openings centered on an origin. A center of each of the plurality of fastener openings is disposed at a first radial distance from the origin. The origin defines an axis extending substantially orthogonally from a plane defined by two lines extending from the origin and at least two centers of the centers of the plurality of fastener openings. A first guard is secured to the base plate and includes a first guard retaining surface including a first curved surface defined by a second radial distance from the axis that is greater than the first radial distance and a first guard guiding surface having a first end adjacent the first guard retaining surface and a second end distal from the first end. The first end is disposed at the second radial distance from the axis. The second end is disposed at a third radial distance from the axis. The third radial distance is greater than the second radial distance. A second guard is secured to the base plate and includes a second guard retaining surface including a second curved surface defined by the second radial distance from the axis. A second guard guiding surface has a first end adjacent the second guard retaining surface and a second end distal from the first end. The first end is disposed at the second radial distance from the axis. The second end is disposed at a fourth radial distance from the axis. The fourth radial distance is greater than the second radial distance.

The invention discloses a mining chain wheel repaired based on an intelligent optical tracking technology and a technology. The repairing technology comprises the following steps that S1, an optical scanning device is used for scanning a worn chain wheel, surface point cloud data of the chain wheel are obtained, and an actual three-dimensional model of the chain wheel to be repaired is generated according to the point cloud data; s2, Boolean operation is carried out on the actual three-dimensional model generated in the step S1 and a preset chain wheel standard digital model, so that a relative wear model only representing a chain nest wear area is extracted; s3, based on the relative wear model, automatically generating a robot welding path for filling a wear area, and generating a repair program; and S4, the welding robot is controlled to execute the repairing program generated in the step S3, and self-adaptive surfacing repairing is conducted on the abrasion area of the chain nest. According to the method, through a digital closed loop of accurate scanning, model comparison, automatic programming and robot repairing, accurate repairing of irregular abrasion of each chain nest is achieved, the repairing quality is improved, and the maintenance period is shortened.

The utility model discloses a material circulation conveying mechanism, which belongs to the technical field of material conveying equipment and comprises a material transmission device and a material carrier, the material transmission device comprises two groups of parallel chain transmission components, and each chain transmission component comprises a chain wheel and a transmission chain connected with the chain wheel. The chain wheels, located at the corresponding positions, of the two chain transmission assemblies are connected through a transmission shaft, the material carrier comprises a plurality of strip-shaped bearing strips arranged in parallel, the two ends of each strip-shaped bearing strip are connected with a carrier traction chain through connecting bases, a gap is formed between every two adjacent connecting bases, and carrier moving guide rails are symmetrically arranged in the direction parallel to the chain transmission assemblies. The carrier traction chain is in sliding fit with the carrier moving guide rail, deflector rods are installed on the transmission chain at equal intervals, the deflector rods and the gaps of the carrier connecting bases form a space fit relation, and when the transmission chain operates, the deflector rods are inserted into the gaps and make contact with the connecting bases. According to the utility model, material direct conveying disc-free and one-way linear direct conveying are realized, and the production efficiency and the space utilization rate are improved.

There is provided a driving device that provides an exercise load to the user to enable strength exercise, and exercise equipment including the same. A driving device according to one aspect of the present disclosure, which winds a portion of a cable part and provides the cable part with an exercise load against an external force applied to the cable part, may include: a stator disposed on the outer side of a motor shaft in a circumferential direction; a rotor positioned on the outer side of the stator in the circumferential direction to be rotated by the stator, and coupled to the motor shaft to rotate together with the motor shaft; and a rotor sprocket formed along the outer surface of the motor shaft at the end thereof to rotate together with the motor shaft; a bobbin installed to be rotatable around a bobbin shaft and configured to wind a portion of the cable part therearound; and a timing belt connecting the rotor sprocket and the bobbin to transmit the rotation force of the rotor sprocket to the bobbin.

The invention belongs to the field of manufacturing of other special equipment, and particularly relates to a folding chair cross brace welding device which comprises a rack, a transmission mechanism is arranged in the rack, two welding mechanisms are symmetrically arranged on the two sides of the rack, a conveying belt mechanism is arranged at the bottom of the rack, the transmission mechanism comprises two transmission shafts, and the two transmission shafts are rotationally installed in the rack. The transmission mechanism comprises a transmission shaft, two groups of chain wheels are symmetrically mounted on the transmission shaft, the chains are meshed with the two groups of chain wheels, a plurality of groups of assembling frames used for assembling a cross brace are arranged between the two groups of chains in a surrounding manner, and the cross brace is composed of two groups of vertical rods and a group of cross rods; the laser welding gun is slidably connected with the guide rail; after being welded, the cross brace can do circular motion along with the assembling frame and automatically fall onto the conveying belt mechanism, workers do not need to take away the cross brace, the workload of the workers is reduced, and meanwhile the automation rate of the device is increased.

A sprocket system including a sprocket assembled from multiple disc sprockets coaxially aligned and secured together to provide a desired axial width for the sprocket is described. In some embodiments, the sprocket described herein is a hub-less sprocket.

The present invention relates to a drive sprocket member for a drive wheel member of a tracked vehicle. The drive wheel member is rotatable about a centre axis for rotating an endless track. Said drive sprocket member comprises a set of tooth members arranged around the circumference of said drive sprocket member, and a ring-shaped support member for said tooth members. Said tooth members are, in an operation position, configured to project from the ring-shaped support member in a main direction essentially parallel to the axial direction of said centre axis. Said tooth members are arranged in connection to said ring-shaped support member and shaped so as to provide resilient properties in the radial direction such that, if a tooth member is subjected to a radial force exceeding a certain threshold, said tooth member is configured to deform relative to its operation position.

The invention relates to an automatic goods delivery device and a delivery vehicle, the automatic goods delivery device comprises a container and a mechanical arm, the container comprises a goods shelf and a container arranged on the goods shelf, the container is provided with a bottom wall used for bearing goods, and the bottom wall is a retractable movable part; the mechanical arm is used for moving the container between the designated position and the container, the mechanical arm comprises a mechanical arm body and a tail end executor installed at the end of the mechanical arm body, and the tail end executor is used for grabbing the container and driving the movable part to be folded to release goods when the container moves to the designated position. The cargo box can contain different types of cargoes, one cargo box is used for achieving standardized design and retractable movable part design in the circulation process, after the roller shutter is retracted, the cargoes automatically fall to the delivery position, only the cargoes are thrown at the tail end, the asset management problem caused by throwing of the container is avoided, and the utilization rate of the container is increased. A power source of the roller shutter comes from a chain wheel on the end effector, and the roller shutter can be driven to be folded only when the end effector is connected with the container.

The present invention discloses an automated three-dimensional storage warehouse system, which relates to the technical field of three-dimensional storage warehouses. It includes a base and guide rails. Both sides of the top of the base are fixedly connected with several support columns, and the guide rails are fixedly connected to the tops of the support columns. A driving and releasing mechanism is movably connected inside the guide rails, and packaging boxes are placed on the surface of the driving and releasing mechanism. In the present invention, a driving motor 1 is used to drive the rolling rollers inside the guide rails to rotate through a sprocket and a chain. At this time, the packaging box is driven by the rolling rollers and moves to directly above the last stacking platform. Due to the self-weight of the stacking platform, it will slowly slide downward along the support column by using a sliding ring. At the same time, the lifting strip follows its trajectory. At this time, the opposite sides of the rolling rollers open downward. During this process, the insertion tenons fall out of the card slots until the lifting strip completely detaches from the rolling rollers, which is beneficial for the convenient self-conveyance and automatic stacking of the packaging boxes, reducing the storage difficulty in the warehouse and improving the degree of automation at the same time.

The invention discloses a refrigeration pipe welding positioning method and device. The method comprises the following steps that S1, branch pipes are placed in all storage boxes; s2, the main pipeline is placed in a matching groove of the supporting frame, and the main pipeline is fixed through cooperation with a pressing ring; s3, a third electric cylinder is started, the third electric cylinder drives a supporting frame and the main pipeline to move to be close to the welding gun, and a branch pipe of the main pipeline moves to cross the welding gun; s4, a first electric cylinder is started, and the first electric cylinder drives a synchronous plate and an ejector sleeve to move; the motor, the first chain wheel, the second chain wheel, the chain and the hollow rotating disc are matched to drive the vortex line groove and linear groove linkage adjusting block and the rolling wheel to move, the purposes of clamping positioning and circle center correction of the branch pipe are achieved, the branch pipe is corrected to the position concentric with the disc, the coaxiality of the branch pipe and a main pipeline branch pipe is guaranteed, and the machining efficiency is improved. And the quality problems of insufficient welding, welding skips, poor welding seam forming and the like caused by positioning deviation are avoided.

The utility model discloses a part detection device, and relates to the technical field of detection. The conveying device comprises a conveying mechanism, the conveying mechanism comprises a base, guide rods are rotationally arranged at the two ends of the base, chain wheels are fixedly arranged at the two ends of each guide rod, the four chain wheels correspond in pairs, chains are arranged on the two corresponding chain wheels in a transmission and winding mode, and a plurality of bearing rods are connected between the two chains in the conveying direction of the chains in an array mode; the mounting frame is arranged on the base, and an industrial camera is arranged on the mounting frame; the two chains and the multiple bearing rods form a transmission part for parts, the parts are sequentially arranged on the transmission part for transmission through the feeding mechanism, when the parts are transmitted to the position below an industrial camera, the parts are clamped and rotated through the clamping and rotating mechanism, the peripheral sides of the parts can be comprehensively detected, and the detection efficiency is improved. And the transmission piece does not need to be separated, so that the time delayed by taking and placing processes is reduced, and the detection efficiency is improved.

The invention relates to the technical field of forklift door frames, and discloses a forklift door frame chain tensioning device which comprises a door frame body and is characterized in that chain tensioners are symmetrically arranged on the side walls of the door frame body; the portal frame body comprises an outer portal frame, a middle portal frame, an inner portal frame, a pallet fork frame, a pallet fork, a goods blocking frame, a front lifting oil cylinder, a front cylinder chain, a front cylinder chain wheel, a rear lifting oil cylinder, a rear cylinder chain and a rear cylinder chain wheel, a lower cross beam and a middle cross beam are fixed in the inner portal frame, the front lifting oil cylinder is fixed on the side wall of the lower cross beam, and the rear lifting oil cylinder is fixed on the side wall of the middle cross beam. A front cylinder chain hanging plate is fixed to the side wall of the middle of the front lifting oil cylinder, the front cylinder chain hanging plate and the middle cross beam are fixed through a threaded installation bolt and a penetrating nut, a piston rod is arranged at the top of the front lifting oil cylinder, and a front cylinder chain wheel is arranged at the top of the piston rod. The chain tensioner is additionally arranged, oil leakage faults of the oil cylinder are reduced, the product service life is prolonged, the application range is wide, and the assembly method is simple.

The stone machining device comprises a step frame, a three-axis carving machine is installed on the upper step face of the top end of the step frame, and two symmetrical L-shaped shaft frames are installed on the portion, on one side of the three-axis carving machine, of the lower step face of the step frame. Rotary plate containing bases are rotationally installed on the outer walls of the opposite sides of the two L-shaped shaft brackets correspondingly, and at least four annular rectangular notch grooves at equal intervals are formed in the outer walls of the rotary plate containing bases. The double-end split clamping plate assembly firmly fixes a stone plate, the chain wheel driving unit drives the rotary plate containing base to rotate, the carved stone plate is turned over to the belt plate conveying machine till the stone plate is conveyed out of a storage station, so that the purpose of continuous discharging is achieved, and workers only need to manually support the stone plate to turn over in the discharging process.

The invention discloses a system for lowering and recovering a hydraulic pipe of an underwater blowout preventer, which comprises a winch drum, a driving assembly and a bearing seat are respectively arranged on shafts at two ends of the winch drum, the driving assembly is used for driving the winch drum to rotate, and the bearing seat is used for supporting the winch drum; a replaceable chain wheel and a hydraulic slip ring are sequentially mounted on the projecting shaft on the other side of the bearing seat, and the replaceable chain wheel is connected with a cable arrangement device through a chain; a hydraulic pipe of the underwater blowout preventer is led into the winch roller through the hydraulic sliding ring, then led to the cable arrangement device through the winch roller and finally led to the underwater blowout preventer through the cable arrangement device, and the cable arrangement device is used for enabling the hydraulic pipe to be arranged in order along the winch roller. The driving assembly is connected with a pneumatic control system which is used for controlling the driving assembly to drive the winch drum. According to the system, hydraulic pipes with different diameters can be automatically collected and released, the heat dissipation effect is good in the collecting and releasing process, and serious heating of the hydraulic pipes cannot be caused.

The utility model relates to a three-position clutch switching device which comprises an input shaft, clutch outer teeth, a manual chain wheel, clutch inner teeth, a clutch sleeve, a pneumatic chain wheel, a seat frame and a switching shifting mechanism. The input shaft is fixedly connected with clutch outer teeth, two sides of the clutch outer teeth are respectively connected with a manual chain wheel and a pneumatic chain wheel through bearings, clutch outer teeth are externally provided with clutch inner teeth and a clutch sleeve, one ends of the manual chain wheel and the pneumatic chain wheel are provided with chain wheels, and the other ends of the manual chain wheel and the pneumatic chain wheel are provided with external splines matched with the clutch inner teeth; and a three-position clutch switching shifting mechanism is arranged between the clutch sleeve and the seat frame. The clutch switching device for switching the three kinds of power is used for switching the three kinds of power of a special gate device. The special gate device is driven by the motor normally, and the special gate device can be opened and closed emergently by a manual or pneumatic emergency operating mechanism in case of power failure, so that the safety of the special gate device is improved, the structure is compact, and the operation is simple.

The utility model provides a stacking machine which comprises a walking vehicle, a cargo carrying platform and a lifting mechanism. A lifting guide wheel is installed on the cargo carrying platform and arranged on a lifting guide rail of the walking vehicle in a lifting and sliding mode, so that the cargo carrying platform can do lifting motion relative to the walking vehicle. The lifting mechanism comprises a first movable chain wheel, a second movable chain wheel, a third movable chain wheel, a fourth movable chain wheel, a first fixed chain wheel, a second fixed chain wheel set, a third fixed chain wheel set, a tensioning chain wheel, a driving motor, a fourth fixed chain wheel set, a fifth fixed chain wheel set, a sixth fixed chain wheel, a first chain, a second chain and a balance weight piece. The first movable chain wheel and the second movable chain wheel are horizontally mounted on left and right sides of the top of the cargo platform; the third movable chain wheel and the fourth movable chain wheel are horizontally mounted on left and right sides of the bottom of the cargo platform; the first fixed chain wheel is installed on the upper left corner of the walking vehicle, the second fixed chain wheel set and the third fixed chain wheel set are installed on the upper right corner of the walking vehicle, and each of the second fixed chain wheel set and the third fixed chain wheel set is provided with two parallel fixed chain wheels. The two tensioning chain wheels arranged up and down are installed on the right side of the walking vehicle, the driving motor is installed on the walking vehicle, and a driving chain wheel of the driving motor and the two tensioning chain wheels are arranged in a triangular mode. A fourth fixed chain wheel group and a fifth fixed chain wheel group are mounted at the lower right corner of the walking vehicle, and each of the fourth fixed chain wheel group and the fifth fixed chain wheel group is provided with two parallel fixed chain wheels; the sixth fixed chain wheel is mounted at the lower left corner of the walking vehicle; one end of a first chain is connected to the upper left corner of the walking vehicle, sequentially bypasses a first movable chain wheel, a first fixed chain wheel, a second fixed chain wheel set, a third fixed chain wheel set, a tensioning chain wheel, a driving chain wheel of a driving motor, a fourth fixed chain wheel set, a fifth fixed chain wheel set, a sixth fixed chain wheel and a third movable chain wheel and is connected to the lower left corner of the walking vehicle. One end of a second chain is connected to the upper right corner of the walking vehicle, sequentially bypasses a second movable chain wheel, a second fixed chain wheel group, a third fixed chain wheel group, a tensioning chain wheel, a driving chain wheel of the driving motor, a fourth fixed chain wheel group, a fifth fixed chain wheel group and a fourth movable chain wheel and is connected to the lower right corner of the walking vehicle; the counterweight parts are wound on a fixed pulley at the top of the walking vehicle through a traction rope and then connected to the cargo carrying platform, and the two counterweight parts are oppositely arranged on the left side and the right side of the walking vehicle. According to the stacking machine, efficient and stable lifting of the cargo carrying platform can be achieved, stability and safety of cargos in the lifting process are guaranteed, the stacking machine is suitable for stacking operation of long and heavy cargos, and reliability and stability of a lifting system are further improved.

The utility model relates to a cleaning type bucket elevator in the field of elevator equipment. The cleaning type bucket elevator comprises an engine base, an elevator body, a driving chain wheel, a driven chain wheel, an elevating chain and an elevating hopper, a cleaning cabin is arranged below the discharge port, a vibrating roller and an air knife are arranged in the cleaning cabin, a plurality of flexible vibrating hammers are spirally and uniformly distributed on the roller surface of the vibrating roller, and the flexible vibrating hammers can respectively form alternate knocking on the bottom of the lifting hopper and the bottom of the discharge port in the rotating process; the air knife is mounted at the bottom of the cleaning cabin, an air outlet of the air knife is obliquely upwards close to the outer edge of the lifting hopper, and the air knife does not interfere with each lifting hopper and the flexible rapping hammer; and a driving motor is arranged above the machine body and is in transmission connection with the driving chain wheel and the vibrating roller respectively. The cleaning type bucket elevator has a more perfect self-cleaning function, residual powder materials on the inner wall of the discharging port of the elevator and the inner wall of each lifting hopper can be cleaned at the same time, and the lifting and conveying efficiency of the bucket elevator can be guaranteed.

A drivetrain for a mobility vehicle includes: an electric motor and a gearshift device having a plurality of gear ratios between a first gear ratio and an upper gear ratio, the electric motor being connected to at least one output sprocket of the gear shift device.

A bicycle hub kit has a hub body, a driver disposed to a first end of the hub body, a sprocket connected to the driver, a clutch sleeve disposed inside the hub body and connected to the driver, and a shaft kit. The shaft kit includes a shaft body, an end base fixed to the shaft body, a ball retainer sleeved on the end base and supporting between the hub body and the end base, and a positioning kit disposed between the end base and the clutch sleeve. The positioning kit can be selected from a sleeve positioning kit and a braking positioning kit. The shaft kit can be detached from the hub body for replacing the positioning kit to transform the bicycle hub kit between with and without a coaster brake.