66 results about "Differential motion" patented technology

The invention belongs to the technical field of graphite production equipment, and particularly discloses uniformly dispersed mixing equipment for graphite cathode production, which comprises a kettle body, the bottom of the kettle body is communicated with a discharge pipe, and the surface of the kettle body is communicated with a feed pipe; by means of a transmission system composed of the driving ring, the outer gear ring, the gear and the inner gear ring, differential motion is generated between the first grinding block directly driven by the rotating shaft and the second grinding block driven by the rotating ring with the speed changed through the gear, and the differential motion forms strong shearing force in the staggered area of the first grinding block and the second grinding block; the first grinding block and the second grinding block can effectively cut soft aggregate formed by graphite and a coating agent, and meanwhile, the gap between the first grinding block and the second grinding block is gradually reduced along with the distance away from the rotating shaft, so that when materials move outwards under the centrifugal effect, the materials can be subjected to the stage treatment process from coarse crushing to fine grinding, the dispersion uniformity is remarkably improved, uneven coating is avoided, and the service life of the materials is prolonged. And abrasion to equipment caused by one-time excessive grinding is effectively reduced.

The invention provides a 3D visual mechanical gripper which is suitable for sorting and gripping disordered supplied workpieces such as motor rotors. The gripper comprises a three-dimensional sensing unit, a reconstruction and recognition unit, a gripping feasibility scoring unit, a differential motion inner supporting / outer clamping integrated end effector, a hand-eye calibration and online compensation unit, a motion planning and monitoring unit and a three-dimensional visual human-computer interface. A high-quality point cloud is obtained, instance segmentation and attitude estimation are utilized to establish a grabbing reference coordinate system, a grabbing feasibility scoring field is constructed based on a friction cone, an anti-torque, a centroid force arm and uncertainty, probabilistic optimization of a grabbing pose is achieved, and an end effector adopts a differential mechanism to achieve rapid switching between an outer clamping mode and an inner supporting mode. The problem that an existing visual mechanical gripper cannot meet the disordered gripping requirement of complex workpieces such as motor rotors is solved.

The invention relates to the technical field of fluid pollution tests, in particular to a composite fluid pollution test device which comprises a machine table and a partition plate fixed to the machine table, and a storage tank is fixed to the partition plate. The guide pipes are connected to the pumping cylinder and are symmetrically arranged, and hollow rods which are symmetrically arranged are axially arranged in the pumping cylinder in a sliding mode; the piston discs are installed in the pumping cylinder in a sliding and sealing mode and are symmetrically arranged, and a pressure conveying mechanism connected with the hollow rod is arranged in the pumping cylinder; the translation guide mechanism is arranged on the partition plate and connected with the hollow rod, the translation guide mechanism can drive the two piston discs to execute differential motion through the hollow rod and the pressure conveying mechanism, pressure fluctuation changes are formed in the pumping cylinder, and after a solution is sucked into the pumping cylinder through a guide pipe, the solution is pumped into the pumping cylinder through the guide pipe. And mixing and pumping the solution.

The invention relates to a constraint-driven five-axis machining singular area tool path local deformation optimization method. In order to solve the problem that the machining quality is reduced due to the fact that a cutter shaft vector enters a singular area to cause abrupt change of rotation shaft motion, the method comprises the steps that based on an A-C double-turntable five-axis machine tool kinematics model, a singular phenomenon mechanism is revealed through a differential motion relation, and the singular area is defined as a conical area meeting the condition that a cutter shaft vector component Tk is larger than or equal to epsilon k (epsilon k = cos5 degree is approximately equal to 0.9962); identifying a cutter axis vector point set entering a singular region in a cutter path, and expanding transition points along the path to construct a sequence to be optimized; interpolating the rotation angular displacement of the sequence by adopting a B spline curve; establishing an optimization model taking a minimum angle jerk integral square norm (guaranteeing motion stability) and a minimum cutter axis vector deviation (maintaining machining precision) as double targets; and solving an optimal B spline control point through a sequential quadratic programming (SQP) algorithm under a non-singularity constraint machine tool kinematics constraint (angular velocity / acceleration limitation) and a motion continuity constraint (C2 continuity at a connection point), and generating a smooth optimized tool path avoiding a singular region. By means of the optimization method, smoothness optimization of the tool path and stability of machine tool movement are achieved, machining errors are effectively controlled, and the method is suitable for five-axis high-precision machining of complex curved surfaces in the fields of aerospace, mold manufacturing and the like.

The utility model discloses a lifting device and a cleaning robot, the lifting device is connected with an operation assembly, and the lifting device comprises a driving assembly and a connecting assembly. Wherein the driving assembly is connected to the connecting assembly. The lifting device is provided with a lifting part and a transmission part, the lifting part rotates relative to the transmission part, and the friction inertia between the transmission part and the operation assembly is smaller than the self-weight inertia of the operation assembly, so that differential motion is formed between the transmission part and the operation assembly; or, the friction inertia between the lifting part and the operation assembly and the transmission part is smaller than the self-weight inertia of the lifting part and the operation assembly, so that differential motion is formed between the lifting part and the operation assembly and the transmission part, and the lifting part and the operation assembly ascend or descend under the action of the differential motion.

The utility model discloses a control surface control mechanism of a V-tail unmanned aerial vehicle, which comprises a pair of control surface main bodies which are arranged in a V shape, and the included angle between the two control surface main bodies is 90 degrees; the main shaft is vertically arranged on the end faces of the ends, close to each other, of the control surface main bodies; and the control assembly is used for controlling the pair of main shafts to rotate synchronously. The utility model has the following advantages and effects: after being assembled, the control mechanism is completely hidden in the fuselage of the aircraft, so that the flight resistance is not additionally increased; differential motion and homodromous motion of the two control surface main bodies are respectively driven by the same motor, so that the deflection consistency of the control surface main bodies on the two sides can be ensured.

The application belongs to the field of agriculture and specifically relates to a differential belt type aigan orderly separator and method. A seed box serves as a container for filling aigan and ensures that aigan is fully supplied during seeding. The separator device utilizes the differential motion of the belt to achieve orderly separation and delivery of aigan. The inclination angle and gap of the belt are precisely adjusted by a tensioning device and adjusting bolts, ensuring that aigan can be accurately seeded under different land conditions. The design of the brush plate and baffle can effectively prevent aigan from leaking from the seed box, maintaining the stability of the seed delivery. The gap adjusting device, through components such as the sliding block, guide shaft and support seat, enables flexible adjustment of the gap between the belts, adapting to aigan seeds of different sizes. The application has the advantages of strong adaptability and high seeding efficiency by controlling the speed and direction of the belt to scatter tightly wound aigan and orderly seed, and is particularly suitable for automated aigan seeding operations.

The invention relates to the technical field of wastewater treatment, and discloses an explosive production wastewater treatment system which comprises a water inlet system used for conveying to-be-treated explosive production wastewater and provided with a microbead adding system; the pretreatment unit comprises a separation tank body, a plurality of magnetic separation elements arranged in the separation tank body, and a differential driving device for driving the magnetic separation elements to do differential motion; the fine processing unit comprises a non-magnetic shell and a magnetic filter element array arranged in the non-magnetic shell, the magnetic filter element array comprises a plurality of magnetic filter elements arranged in parallel, and an electromagnetic coil is arranged on the periphery of each magnetic filter element; the wastewater diversion control system comprises a concentration detection device and a flow regulation device, the technical problem that a single magnetic separation system cannot cope with explosive production wastewater concentration and composition fluctuation is effectively solved, the continuous and stable operation capacity and the treatment efficiency of the explosive production wastewater treatment system are improved, and the operation and maintenance cost is reduced.

A differential motion device has: an endless component forming an endless path, wherein the endless component has: a first path segment located inside; a second path segment located outside; and a connecting path segment connecting the first path segment and the second path segment; a first drive roller engaging with the first path segment; a second drive roller engaging with the second path segment; a first drive motor rotating the first drive roller; a second drive motor rotating the second drive roller; a control unit controlling the first drive motor and the second drive motor; and a movable pulley unit comprising: a movable pulley engaging with the connecting path segment and moving linearly along a first axial direction and / or rotating with a movement of the first path segment and the second path segment;a first moving component that moves along the first axial direction with a linear movement of the movable pulley; and a second moving component that is held by the first moving component and moves with a rotation of the movable pulley.

The utility model relates to the technical field of garbage recycling, in particular to a discharging mechanism of a dehydrator. The shell cover detachably covers the upper part of the shell; the feeding hole is formed in the shell cover and is vertically formed in the vertical direction of the shell; the discharging hole is formed in the lower end of the shell; the screen is rotationally arranged in the shell and is used for separating water in garbage; the centrifugal rotating assembly is rotationally arranged in the machine shell and used for driving garbage in the screen to do centrifugal motion, and the differential motion assembly is arranged in the machine shell and used for driving the screen and the centrifugal rotating assembly to do differential rotation. The anti-abrasion assembly is arranged on the inner wall of the machine shell and located below the screen, and the water collecting tank is fixedly arranged in the machine shell and surrounds the outer wall of the screen. The device aims at reducing the abrasion effect of garbage discharged out of the centrifugal cylinder on the inner wall of the machine shell as much as possible.

The invention discloses a multi-stage film evaporator for removing low-boiling-point substances in polyether, and relates to the technical field of evaporators, the multi-stage film evaporator comprises an evaporator body, a feed port, a discharge port and a differential mechanism, the feed port is fixedly connected to the upper right end of the evaporator body, the discharge port is fixedly connected to the upper portion of the front end of the evaporator body, and the differential mechanism is fixedly connected to the lower portion of the front end of the evaporator body. The top of the evaporator body is fixedly connected with a differential mechanism, the differential mechanism is arranged, through differential motion among a vibration mechanism, two sets of second adjusting mechanisms and a scraper, strong shear force is generated in the early stage, polyether molecular chain winding is rapidly broken, escaping of low-boiling-point substances is accelerated, and product degradation caused by excessive shear in the later stage is avoided; and a uniform film is maintained to promote deep devolatilization, so that the optimal balance of efficiency and quality is realized, and the technical limitation of traditional fixed rotating speed is broken through.

The invention discloses a central fulcrum shaft sprinkling irrigation mechanism capable of expanding a sprinkling track. The central fulcrum shaft sprinkling irrigation mechanism comprises a universal connecting assembly, an expansion angle arm, a steering assembly and a plurality of irrigation additional nozzles installed on the expansion angle arm. The first end of the universal connecting assembly is connected with the center support through the main rotating arm and communicated with the main pipeline, the second end of the universal connecting assembly is connected with the expansion angle arm, and the steering assembly is installed at the tail end of the expansion angle arm and supported on the ground. The differential-driven double-wheel independent steering assembly is adopted, differential motion is formed in real time according to the angle of the main rotating arm and the position feedback of the expansion angle arm, the spraying boundary is expanded from a circle to an approximate rectangle or polygon, the problem of corner blind areas is effectively solved, and the irrigation coverage rate and the land utilization rate are remarkably increased. The central fulcrum shaft main machine and the expansion angle arm are flexibly connected through the universal joint, torque can be buffered, the device adapts to terrains, the structure is compact and reliable, and an efficient and low-cost precise irrigation scheme is provided for a large rectangular farmland.

The invention relates to the technical field of conveying equipment, in particular to a four-direction moving rail intelligent conveying trolley which comprises a bearing assembly and a conveying trolley body. The position changing assembly comprises a storage bin arranged on the inner wall of the conveying trolley, a fixing frame arranged on the outer side of the storage bin, a first adjusting plate arranged on the inner wall of the fixing frame and a second adjusting plate arranged on the outer wall of the storage bin; and the discharging assembly comprises a discharging plate arranged on the inner wall of the material storage bin, a synchronous wheel arranged on the outer wall of the material storage bin and a synchronous belt arranged on the end face of the synchronous wheel. The storage bin can be taken out of the trolley by starting the position changing assembly so as to ensure that enough space is provided for personnel to conduct discharging, meanwhile, differential motion of the discharging plate relative to the storage bin can be synchronously achieved by starting the discharging assembly, and personnel discharging is assisted.

The utility model relates to an automatic bottle rotating device which can adapt to bottle rotating of filling bottles of different bottle types. The at least one conveying line is used for conveying the filling bottles in the first horizontal direction X; the at least one bottle twisting mechanism and the at least one conveying line are arranged in a one-to-one correspondence mode, each bottle twisting mechanism comprises a first transmission belt and a second transmission belt which do differential motion, and the first transmission belt and the second transmission belt are arranged in the second horizontal direction Y in a spaced mode; the lifting adjusting mechanism is arranged on the rack and comprises a first lifting driving assembly, a second lifting driving assembly driven by the first lifting driving assembly to work and a cross beam, and the cross beam is connected with the first lifting end of the first lifting driving assembly and the second lifting end 521 of the second lifting driving assembly; the cross beam stretches across the conveying line in the second horizontal direction Y and is connected with the bottle rubbing mechanism, and the second horizontal direction Y is perpendicular to the first horizontal direction X.

The utility model relates to the technical field of wire cutting equipment, in particular to a single-side transfer multi-wire cutting machine. The utility model provides a unilateral transfer multi-wire cutting machine, including cutting machine main part, lifting mechanism, cutting subassembly, pay-off subassembly, take-up subassembly, the cutting machine main part is square frame structure, the lifting mechanism is provided on the both sides of cutting machine main part, the cutting subassembly is provided in the cutting machine main part through the lifting mechanism, the pay-off subassembly is provided with pay-off subassembly, take-up subassembly is provided in the cutting machine main part. By means of the single-side transfer structure, a set of lifting structure for controlling the roller support is omitted, and the control mode is relatively simple along with the change of the structure. Angle inclination of a cutting line and a cut object can be achieved without a material platform swinging mode or overall inclination of the cutting frame, and the cutting progress is accelerated.

The utility model relates to the technical field of laser light guide arms, and discloses a differential connection structure and a laser light guide arm thereof, comprising connection blocks which are symmetrically arranged; the differential assembly is arranged between the connecting blocks and used for limiting rotation of the connecting blocks, the differential assembly comprises composition blocks and ratchet gears, the composition blocks are arranged between the connecting blocks and abut against the connecting blocks, the symmetrical ratchet gears are arranged in the composition blocks, one ratchet gear is fixedly connected with the composition block, and the other ratchet gear is fixedly connected with the other ratchet gear. According to the differential assembly, the mode that a nut conducts differential motion in the past is abandoned, so that the problem of thread slipping caused by long-time use of the nut is solved, the position of the light guide pipe body is adjusted by means of meshing state conversion between the ratchet gears, and the light guide pipe body can be adjusted conveniently. And therefore, the service life of the device is prolonged.

The utility model discloses a kind of anti-sticking type discharge structures for rotor sand mixer, it is related to sand mixer discharge technical field, including sand mixing machine main body and being set in sand mixing machine side and with the discharge pipe of sand mixing machine main body inside intercommunication, discharge door of closed sand mixing machine main body and discharge pipe is arranged in the discharge pipe, the end of discharge pipe is fixedly connected with discharge shell, discharge impeller is rotatably arranged in the inside of discharge shell, intermittent mechanism for driving discharge impeller intermittent rotation is installed on the outer wall of discharge shell, scraper for cleaning discharge impeller is arranged in discharge shell, gear transmission assembly is arranged between scraper and gap mechanism to realize differential motion. The utility model is through arc-shaped discharge plate intermittent rotation and scraper differential cleaning, after arc-shaped discharge plate rotation, ration discharging, while discharging, scraper can contact arc-shaped discharge plate to remove sand, blockage rate reduces, solve the frequent blockage problem caused by sand accumulation in traditional discharge port.

The embodiment of the invention provides an intelligent book storing and taking system and method. The system comprises a two-wheel differential motion chassis, a five-degree-of-freedom mechanical arm, a clamping device and a storing device. Wherein the two-wheel differential motion chassis is used for freely moving in a library so as to adapt to different environments and terrains; an advanced control algorithm is adopted to realize accurate speed control and direction control; the five-degree-of-freedom mechanical arm positions the book position through a depth camera and moves, so that the book is accurately positioned by the clamping device; the clamping device rotates along with the stories to clamp the books in different placing states and swing and stir the books up and down, so that the books are pulled out, and through the system, the intelligent storing and taking speed and accuracy are improved.

A power transmission device is provided with a casing drivingly coupled to the power source to create a rotation about an axis, and a differential gear set supported by the casing to rotate with the casing about the axis. The differential gear set includes a pair of side gears capable of making a differential motion from each other, a friction section interposed between the casing and the differential gear set, or internal to the differential gear set, to frictionally limit the differential motion, a disconnect device coupled to one of output shafts for connectably disconnecting one of the side gears from the one of the output shafts, and a cam structure coupled directly or indirectly to the friction section to convert a torque in a direction for accelerating the rotation into a thrust force in an axial direction to exert the thrust force on the friction section.

A granular dampening component for use with an earth-boring tool that includes an inner portion and an outer portion that at least partially surrounds the inner portion. A granular material is disposed between the inner portion and the outer portion. The granular material configured to transfer torque from the outer portion to the inner portion and configured to dissipate energy based on differential motion of the granular material.

The present application relates to a Mars surface sample collector and method based on differential bevel gears and rope driving, and belongs to the technical field of Mars sampling and returning. It comprises a connecting bracket for installing a driving assembly, the output end of the driving assembly being connected with a differential motion assembly for driving the differential motion assembly, the differential motion assembly driving a rope-driven grabbing assembly to act, and the rope-driven grabbing assembly being used for grabbing and releasing samples. The present application designs a Mars surface sample collector based on differential bevel gears and flexible rope driving, which can realize the actions of sampling point adjustment, jaw clamping and arm recovery fixation under the driving of three motors, reduces the number of driving motors while ensuring the adaptability of the sampling device to the position error of the docking point, simplifies the action of sample collection, improves the reliability of sample collection of the sampling device in the autonomous running state, and reduces the launch mass of the equipment.

The invention provides a posture adjusting device of an optical lens box, which comprises a base, a bearing platform, an adjusting assembly and a differential protection assembly, and is characterized in that the adjusting assembly comprises a first lifting unit and a second lifting unit which are arranged in parallel, and the adjusting assembly is connected with and supports the bearing platform through a first flexible supporting element and a second flexible supporting element; the lifting and pitching adjustment of the bearing platform and the optical mirror box on the bearing platform is realized by controlling the synchronous or differential motion of the two lifting units. The differential protection assembly is arranged between the two lifting units and used for monitoring the relative displacement between the two lifting units in real time and triggering a hardware protection signal when the displacement reaches a preset safety threshold value, and movement of the lifting units is forcibly stopped. While high-precision two-degree-of-freedom posture adjustment is achieved, overload damage of the flexible supporting element caused by faults of a control system is effectively avoided through an independent hardware differential protection mechanism, and the reliability and safety of the device are remarkably improved.

The invention provides a differential device which can improve regeneration efficiency even if a differential limiting part is provided. A differential device (1) is provided with: a rotatable differential case (7); a pinion gear (11) that is rotatably supported within the differential case (7) and revolves by the rotation of the differential case (7); a pair of side gears (13, 15) that mesh with the pinion gear (11) and are rotatable relative to each other; and sliding surfaces (33, 43) that are provided between the differential case (7) and the side gears (13, 15) and that use sliding surfaces (33, 43). And a differential restricting part (5) for restricting the differential motion of the pair of side gears (13, 15) by the sliding of the pair of side gears (13, 15), in which an urging member (47) for urging the sliding surfaces (33, 43) of the differential restricting part (5) in the direction in which the sliding surfaces (33, 43) are separated is disposed between the differential case (7) and the side gears (13, 15).

To provide a power transmission device for a vehicle capable of controlling differential motion of a pair of right and left wheels while suppressing increase of vehicle weight.SOLUTION: The vehicular power transmission device 20 includes a right wheel axle 42R, a motor generator 50 having a stator 52 and a rotor 54 relatively rotatable around an axis Cmg1, and an electronic control device 90. (a) a ratio α 1 (= NwR / Nd) of the right wheel speed NwR to the differential-case rotation speed Nd is equal to a ratio α 2 (= Nr / Ns) of the rotor rotation speed Nr to the stator rotation speed Ns, (b) the stator 52 has a coil 52c, (c) the rotor 54 generates a rotating magnetic field for the stator 52 in accordance with the relative rotation between the stator 52 and the rotor 54, and (d) the electronic control device 90 is configured to control the rotation of the motor generator 50 in accordance with a predetermined condition when the predetermined condition is satisfied.SELECTED DRAWING: Figure 1

The invention relates to a numerical simulation method and device for a heavy haul railway ballast track and computer equipment. The method comprises the steps that a target track serves as a continuous beam structure, and a first motion differential equation of the target track is constructed; enabling the middle elastic support of the target orbit to be equivalent to unknown counter force, acting the unknown counter force on the target orbit, and obtaining a second motion differential equation containing the unknown counter force based on the first motion differential equation; analyzing the second motion differential equation to obtain a vibration mode function of the target orbit; and constructing boundary conditions of the target orbit, and combining the boundary conditions and the vibration mode function to obtain a spectral stiffness matrix of the target orbit, the boundary conditions including a displacement boundary condition and a force boundary condition. By adopting the method, the degree of freedom of the stiffness matrix can be reduced, the calculation efficiency is remarkably improved, and the simulation period is shortened.

The invention provides a material throwing device and a dryer, the material throwing device comprises a first transmission assembly, a second transmission assembly, a rotation driving mechanism, a motion synthesis component and a throwing disc used for receiving and throwing materials, and the second transmission assembly is connected between the rotation driving mechanism and the motion synthesis component; the second transmission assembly is used for receiving the power of the rotation driving mechanism, generating differential motion having a rotation speed difference with the rotation motion, and converting the differential motion into periodic asymmetric disturbance acting on the motion synthesis component; and the motion synthesis component is movably connected with the throwing disc, and when the rotary driving mechanism rotates, the throwing disc is driven by the motion synthesis component to simultaneously perform rotary motion and periodic asymmetric disturbance composite motion superposed on the rotary motion. The problems that a traditional throwing device is uneven in material distribution, single in applicable material, high in humidity and prone to blockage are fundamentally solved.

The application provides a method for correcting kinematic parameters based on odometer error, and the method comprises the following steps: establishing a double-wheel differential motion model based on vehicle parameters, calculating the linear speed of the left wheel and the linear speed of the right wheel of the double-wheel differential motion model, and calculating the corresponding motor encoder position value according to the linear speed of the left wheel and the linear speed of the right wheel; combining the motor encoder position value to calculate the motion change of the vehicle odometer; combining the motion change to correct the wheel diameter ratio of the vehicle; combining the motion change and the corrected wheel diameter ratio to correct the wheel diameter of the vehicle; combining the motion change to correct the wheel spacing of the vehicle; and bringing the corrected wheel diameter and wheel spacing of the vehicle into step S2 to verify the motion change. The application solves the problem that the wheel diameter and the wheel spacing affect each other in the mainstream calibration method of the double-wheel differential robot model, separates the calibration of the wheel diameter and the wheel spacing, and has high robot positioning accuracy under comprehensive working conditions.

The invention provides an automatic plugging device and method, and the device comprises a first drive module, a second drive module and a plugging head, and the plugging head is provided with an adsorption end used for adsorbing a to-be-plugged product. The driving end of the first driving module is connected with the second driving module and used for driving the second driving module to move in the first linear direction. The second driving module comprises a first linear driving mechanism and a second linear driving mechanism which are arranged in parallel and are mutually independent, the movable ends of the first linear driving mechanism and the second linear driving mechanism are jointly connected with a connecting plate, and the connecting plate is connected with the connecting plug; when the first linear driving mechanism and the second linear driving mechanism move synchronously, the connecting plug is driven to move in the second linear direction. And when the first linear driving mechanism and the second linear driving mechanism perform differential motion or reverse motion, the connecting plug is driven to rotate around a preset axis. Space compact adaptation, high-precision alignment and rapid machine type switching of the plugging device are realized, and the plugging damage risk of a product is reduced at the same time.

The invention provides a measuring device, a conveying system and a plate detection method. The measuring device comprises an installation body, a first movable part, a second movable part, a measuring part and a differential motion mechanism. The differential motion mechanism comprises a driving piece, a rotating body, a first connecting rod and a second connecting rod. The driving piece controls the first connecting rod and the second connecting rod to be in staggered transmission through the first differential motion part and the second differential motion part on the rotating body, so that the second movable piece moves in the second direction relative to the first movable piece and the first movable piece moves in the first direction relative to the mounting body in a staggered mode; therefore, the measuring parts on the second movable part can respectively and independently perform scanning measurement and measurement position adjustment, the complex structure and complex motion control are simplified, the number of the driving parts and the measuring parts is reduced, the cost is reduced, and the measurement accuracy is improved. And the installation transmission superposition error caused by multiple driving pieces and the coordinate system calibration difficulty and precision loss caused by multiple measuring pieces are reduced, and the measuring precision is improved.

The invention relates to a device and a method for realizing all-fiber flexible upset bending forming of a large crankshaft on a single-action press, and the device comprises an upper rack which can be connected with the single-action press and can move up and down along with the single-action press; the lower rack is positioned below the upper rack; the bending die mechanism comprises an upper bending die and a lower bending die, the upper bending die is arranged on the upper rack in a sliding mode, and differential motion is formed between the upper bending die and the upper rack in the moving direction of the single-action press; the upper and lower die mechanism comprises an upper die block and a lower die block which can be separated, the upper die block is suspended above the lower die block through a rope piece, and when the upper die block and the lower die block are meshed together and driven to move towards the lower bending die, the two ends of the blank located on the lower bending die can be extruded and upset. Compared with the prior art, upsetting and bending processes can be decoupled, the first upsetting and second bending forming process of the large crankshaft is completed on a common single-action press, and the purpose of forming the large marine crankshaft is achieved.