101results about How to "Adjustable speed" patented technology

The invention provides a full-automatic rapid welding device for a circular seam of a special-shaped guide pipe. The full-automatic rapid welding device comprises a base; the gantry bracket is arranged on the base; the gantry cross beam is arranged on the gantry bracket; the gantry sliding rail is arranged on the gantry bracket and the gantry cross beam; the automatic welding gun assembly lifting motor is arranged on a gantry sliding rail on the gantry cross beam; the automatic welding gun assembly is connected with the automatic welding gun assembly lifting motor; the flexible clamping and displacement device is arranged on the base, and the flexible clamping and displacement device is used for clamping and displacing the special-shaped guide pipe; the control box assembly is arranged on the base in a sliding mode, and the control box assembly is used for controlling the automatic welding gun assembly lifting motor, the automatic welding gun assembly and the flexible clamping and displacement device; meanwhile, the invention further provides a full-automatic rapid welding method for the circular seam of the special-shaped guide pipe.

The invention discloses a semi-coke tail gas chemical looping hydrogen production system which is characterized in that a first gas inlet chamber and a second gas inlet chamber are arranged in the hydrogen production system, and a reaction tube comprises a first reaction chamber and a second reaction chamber; the gas inlet of the first reaction chamber is communicated with the gas inlet of the second reaction chamber; the air outlet of the first reaction chamber is communicated with the air outlet of the second reaction chamber, so that the first reaction chamber and the second reaction chamber can supply air independently, the air speed in the first air inlet chamber is higher than that in the second reaction chamber, internal airflow circulation is effectively formed in the internal circulating fluidized bed, the reaction process is more sufficient, and the reaction efficiency is improved. The device effectively improves the hydrogen production efficiency, is simple in structure, realizes the independent air supply process through the independent design of the two cavities of the gas inlet pipe and the reaction pipe, realizes the effective circular reaction of tail gas in the reaction pipe through the control of the air speed, and improves the conversion efficiency.

The utility model discloses a seeding device and relates to the technical field of agricultural robots. The device comprises a plurality of seed leakage mechanisms, a plurality of soil breaking and covering mechanisms and a driving mechanism, the seed leaking mechanism comprises a seed box and a seed leaking roller rotationally mounted in the seed box, and seed clamping holes with different hole diameters are formed in the peripheral side of the seed leaking roller; the driving mechanism comprises a seeding rack and a driving shaft rotationally mounted on the seeding rack, and the seed leaking roller is mounted on the driving shaft; walking wheels are rotationally installed at the two ends of the sowing machine frame, and the walking wheels and the driving shaft are in transmission connection through a variable-speed first transmission assembly. The driving mechanism is adopted to drive the seed leaking roller to rotate, the driving mechanism adopts the walking wheel to drive the driving shaft to rotate, so that the seeding rate is matched with the advancing rate of the whole device, the seeding uniformity is ensured, and the walking wheel is in transmission connection with the driving shaft through the variable-speed first transmission assembly, so that the seeding efficiency is improved. The seeding speed is adjusted, and the seeding requirements of various seeds are met.

The invention provides an FPGA-based universal JPEG grayscale image compression module. The FPGA-based universal JPEG grayscale image compression module comprises a grayscale data caching module, a grayscale data reading module, a one-dimensional DCT conversion module, a two-dimensional DCT conversion module, a quantization module, a zigzag scanning module, a DC coefficient coding module, an AC coefficient coding module, a JPEG data stream generation module and an output framing module. According to the method, the storage area occupied by the image data in the DDR3 is stipulated by configuring the initial storage address of the DDR3; by configuring image width and image height parameters, performing JPEG (Joint Photographic Experts Group) compression processing on any grayscale image which is smaller than the capacity of the DDR memory and has image height and image width which are positive multiples of 8; adjusting the speed of an image compression process by configuring a compression speed parameter; and the quality of the compressed image and the total data volume of the JPEG data stream are accurately controlled by configuring an image compression ratio parameter. The transmission efficiency of the remote sensing image is improved, and the occupied storage space is reduced; and the method can be conveniently and flexibly applied through parameterized configuration, and is easy to transplant and high in universality.

The utility model relates to maintenance-free hub assembly detection equipment, which belongs to the technical field of detection equipment, and comprises a workbench, a rack and a protection box, and a detection mechanism is arranged outside the workbench; the detection mechanism comprises an air cylinder fixedly installed at the top of the rack, an output shaft of the air cylinder is fixedly connected with a moving table, a gear motor is fixedly installed at the top of the moving table, a rotating connector is installed at the front end of an adjusting rod, and a torque sensor is installed between the rotating connector and the gear motor. An ABS gear ring jumping sensor and an ABS signal sensor are installed outside the detection support, a loading shaft is fixedly connected to the top of the mounting plate, and a pull pressure sensor is installed outside the loading shaft. According to the maintenance-free hub assembly detection equipment, through arrangement of the detection mechanism, the function of efficient and multifunctional detection is realized, multiple detection contents can be completed by one piece of equipment, and the detection efficiency of a hub assembly is further improved.

The application discloses a geothermal energy adjustable power generation system based on carbon dioxide working medium, which comprises a power generation well, a temperature and pressure adjusting device connected through a pipeline, a gas-liquid heat exchange device connected with the temperature and pressure adjusting device at one end and connected with a steam superheating device at the other end, a heat supply device and a turbine arranged on the steam superheating device, a power generation device connected with the turbine, the power generation device connected with the gas-liquid heat exchange device through a pressure adjusting device, a plunger pump connected with a recharging well at one end and connected with the gas-liquid heat exchange device through a refrigeration device at the other end. The system can further heat the carbon dioxide working medium after being converted into steam, thereby improving the temperature and pressure of the steam and the power generation efficiency of the turbine. Moreover, the output of the heat supply device is adjusted, the rotating speed of the turbine and the output power of the power generation device are adjusted, the adjustability of the power generation capacity is realized, and the defect of the vacancy of the technology in China is solved.

The present invention relates to the technical field of air-conditioning heat dissipation, and specifically to a multi-stage heat dissipation device and method for air-conditioning with a function of preventing heat accumulation, comprising: an air duct, and a discharge pipe fixed to the side wall of the air duct, a first sieve plate fixed to the end of the air duct facing away from the discharge pipe, a second sieve plate fixed to the side wall of the discharge pipe, and a liquid storage tank fixed to the air duct; a fan rotatably installed in the air duct and used to control the outside air to enter the air duct; a driving mechanism arranged in the air duct, a water-cooling circulation mechanism connected to the driving mechanism is also arranged in the air duct, and a circulating cooling pipe connected to the liquid storage tank is connected to the water-cooling circulation mechanism; a temperature control adjustment mechanism is arranged on the driving mechanism. The present application can achieve multi-stage heat dissipation of the air conditioner through the cooperation of water cooling and air cooling, and automatically adjust the output power of water cooling and air cooling according to the temperature of the air conditioner, thereby automatically adjusting the heat dissipation effect.

The utility model relates to a three-position type rotary drum device, and relates to the technical field of rotary drum devices. The device comprises a vertically arranged stand column, a rotating shaft is arranged on the stand column, the rotating shaft is rotatably connected with the stand column, a speed regulating motor is arranged on the rotating shaft, an output shaft of the speed regulating motor is connected with a drum body, an adjusting assembly is arranged on the side wall of the stand column, and the adjusting assembly is connected with the rotating shaft. And the rotating shaft, the speed regulating motor and the drum body are driven to rotate. The rotary drum device has the effects that under the condition that the drum body and the speed adjusting motor are not frequently disassembled, convenient feeding and discharging are achieved, and the safety of the rotary drum device is improved.

The invention relates to the technical field of sowing quality detection, and discloses a highland barley sowing quality detection device and method for a highland barley sower, the device comprises a sowing box, the sowing box is provided with a movement mechanism, the movement mechanism is used for driving the sowing box to move, the movement mechanism is connected with a depth adjusting mechanism, and the depth adjusting mechanism is used for adjusting the sowing quality of the highland barley sower. According to the device, the sowing quality of highland barley can be detected, the sowing line spacing can be detected during detection, the planting depth of seeds can be detected, meanwhile, the distance between the buried seeds can be detected, and the change of the distance between the seeds before and after the seeds are buried can be conveniently researched; according to the highland barley planting device, the row spacing can be adjusted to a proper planting row spacing, the planting depth can be adjusted to a proper depth for planting, the yield of highland barley can be improved conveniently, and the seeding speed can be adjusted, so that the distance between seeds is adjusted.

The invention discloses a rice pot seedling transplanter, which comprises a control system, a supporting mechanism, a pressure plate mechanism, a transplanting arm mechanism, a lateral box shifting mechanism and a longitudinal conveying mechanism, wherein the transplanting arm mechanism, the lateral box shifting mechanism and the longitudinal conveying mechanism all comprise a driving motor connected to the control system, and the control system realizes a coordinated cooperation scheme of the three driving motors, thereby realizing accurate conveying and transplanting of the pot seedlings.

The present invention discloses a control method for a pure mechanical pneumatic control logic actuator of a vacuum toilet, comprising the following steps: 1) 0-position state control, 2) system start-up of a flush, 3) sewage tank pumping, 4) secondary flushing, 5) sewage tank discharge, and 6) resetting. The control method of the present invention has simple steps, and can not only adjust the speed of opening or closing of the first pneumatic stop valve and the second pneumatic stop valve, and reduce the noise of the toilet during the suction and sewage discharge process, but also play the role of airflow flushing the inner wall of the flow channel, preventing the risk of dirt adhesion and jamming, and improving the sewage discharge efficiency, and at the same time can ensure that the sewage and air in the sewage tank will not flow back through the first pneumatic stop valve.

A resistance tape winding mechanism and method, belonging to the field of electronic component packaging devices. Including variable diameter shaft core, limit plate positioning block, foot switch, PLC controller, servo controller, tension spring, rack shell, feeding limiting mechanism, sensor mounting bracket, sensor, linear bearing seat, equipment platform, guide shaft, limit plate, pressing block, servo motor, torsional spring, servo motor mounting seat. The variable diameter shaft core is used as the winding shaft core, and different gears are selected for winding resistance carrier tapes of different lengths. Manual feeding is adopted, the device is started to automatically wind the tape, the device automatically stops after winding, then the wound tape is manually removed, and the outermost circle is manually fixed with adhesive tape. The purpose of achieving the same outer diameter of resistance carrier tapes of different lengths after winding into products is achieved, and the consistency of the outer diameter of the wound tape, the roundness of the wound tape, the efficiency of the wound tape and the consistency of the quality are improved. It is used for winding tape-shaped packaging products.

The object of the present invention is to provide a cutting device and a method of using the same, so as to achieve efficient sorting of rubber materials and solve the problems of low cutting efficiency and obvious incision in traditional cutting equipment. To achieve the above-mentioned object, the solution of the present invention is to provide a cutting device, including: a closed-loop wire saw, the four ends of the wire saw are respectively provided with fulcrums, the fulcrums are arranged on the inner side of the wire saw, the upper side of the wire saw is provided with a cutting device, the cutting device forms an inwardly concave U-shaped cutting groove on the upper side of the wire saw, the cutting device is used to push the wire saw for cutting, the lower side of the wire saw is provided with a damper, the damper is used to compensate for the stroke of the wire saw when the cutting device is working, the wire saw is also connected to a driving device, and the driving device drives the wire saw to move at high speed.

The utility model discloses a one -way fan direct current pressure regulating circuit and one -way fan, one -way fan direct current pressure regulating circuit includes input interface CN1, filter module, voltage reducing chip U1, voltage stabilizing module, modulate right module and output interface CN2, input interface CN1 has one end, two end and three end, voltage reducing chip U1 has IN pin, EN pin, FSW pin, SW pin and FB pin, and output interface CN2 has four end and five end, one end of filter module is connected with one end of input interface CN1 and IN pin of voltage reducing chip U1 respectively, and its other end is grounded with two end of input interface CN1, one end of voltage stabilizing module is connected with SW pin of voltage reducing chip U1 and four end of output interface CN2 respectively, and its other end is connected with five end of output interface CN2 and is grounded, and the input of modulate right module is connected with three end of input interface CN1, and its output is connected with FB end of voltage reducing chip U1.

The utility model discloses a kind of foldable combination portable conveyors, it is related to conveyor technical field, including rotating roller assembly, multiple rotating roller assembly is arranged along straight line, the rotating roller assembly includes rotating roller and two support legs, the rotating roller is rotatably installed between two support legs, the top end of the support leg is fixedly connected with hinged connecting piece, slot is equipped on the hinged connecting piece;Connecting component, the connecting component includes first sliding slot, second sliding slot and connecting rod, the first sliding slot and second sliding slot are respectively installed on two adjacent support legs, the connecting rod is inserted in first sliding slot and second sliding slot;Baffle, two the baffle is respectively inserted in the support leg on both sides, a plurality of plug blocks are connected on the baffle, the plug block is inserted in corresponding slot.The utility model is through the design of foldable linkage mechanism, modular assembly and multifunctional baffle, solve the problem that traditional conveyor is not easy to carry.

The utility model belongs to the technical field of glass guide rails, and particularly discloses a glass guide rail with a V-shaped guide structure, which comprises a shell, a second sealing ring is embedded at the edge of an opening at one end of the shell, a bottom cover is attached to the second sealing ring at one end of the shell close to the second sealing ring, and a sealing bolt is sleeved in the bottom cover. A first sealing ring is arranged between the sealing bolt and the bottom cover, a sleeve is arranged on the side, close to the second sealing ring, of the bottom cover, a plurality of open holes are formed in the side face of the bottom cover, a spring is sleeved with one end of the sleeve, an abutting block is attached to one end of the spring, a push rod is fixed to the side, away from the spring, of the abutting block, and a tray is fixed to the end, away from the abutting block, of the push rod. A rubber pad is embedded in the tray, the spring is matched with the abutting block to push the push rod outwards, second-time damping operation is prepared, and an open hole formed in the sleeve limits the flowing speed of hydraulic oil and slows down the moving speed of the push rod.

The invention provides a train carriage cleaning system and method, and belongs to the technical field of train carriage cleaning, the system comprises a car pusher rail installed on one side of a train rail and an automatic cleaning device, the car pusher rail is parallel to the train rail, a car pusher is arranged on the car pusher rail, and the automatic cleaning device is arranged on the car pusher rail. The automatic cleaning device is located in the advancing direction of the train carriage, used for cleaning the train carriage and matched with the sliding speed of the train carriage on the train track. The carriage can continue to slide under the action of inertia after unloading coal and being pushed out of an operation area of the car dumper by the car pusher, and the automatic cleaning device is matched with the sliding speed of the carriage and performs cleaning operation on the carriage when the carriage slides, so that the carriage is cleaned when the carriage slides, and the efficiency of cleaning the carriage is improved. And the cleaning efficiency is improved.

The present invention discloses a rotating target plate device and method for a high-speed target damage experiment, the device comprising: a frame and a power motor, a rotating target, a load bearing device, a cooling and lubricating device and a braking device that are sequentially fixed on the frame and coaxially connected with the working axis, and a controller, the controller is communicatively connected with the power motor, the load bearing device, the cooling and lubricating device and the braking device to simulate a high-speed target penetration damage experiment. The high-speed target damage experiment rotating target plate device and method disclosed by the present invention can improve the accuracy of evaluating the damage effect of a high-speed moving target.

The utility model discloses a kind of tank uniform shaking devices, including rack, at least two groups of parallelly arranged rotating shaft assembly, transmission sprocket, drive assembly and idler sprocket. Rotating shaft assembly includes shaft and at least two adjustable wheel diameters adjusting wheel of sleeve set in the outer periphery of shaft, by locking bolt fixed and spacing adjustable;Transmission sprocket is positioned by way of key and is axially fixed using locking bolt, and different specifications can be quickly replaced to adjust transmission ratio;Drive assembly is driven by chain, cooperates idler sprocket and symmetrically arranged double-tension sprocket to realize chain stable tensioning, and idler sprocket height is adjustable to enhance tensioning force;Shaft both ends adjusting wheel is equipped with anti-slip retaining edge, rack bottom is equipped with universal caster and threaded lifting foot cup;The device has high universality, and different specifications tank is adapted by adjusting wheel diameter and spacing, transmission sprocket replacement realizes speed regulation, and double-tension structure ensures transmission stability, solves chain slack problem, and is suitable for the efficient mixing demand of multi-specification tank.

The utility model discloses modified plastic particle conveying equipment, which relates to the technical field of plastic particle conveying, and is characterized by comprising a frame body, a material conveying pipe is obliquely arranged on the frame body, a rotating spiral feeding rod is arranged in the material conveying pipe, a discharge port is arranged at the top end of the material conveying pipe, and a feeding box is arranged at the bottom end of the material conveying pipe. A material injection hopper is arranged above the feeding box and provided with a material injection opening corresponding to the feeding box, and the material injection opening is movably connected with a plurality of baffles used for blocking the material injection opening. According to the utility model, the plurality of baffle plates for blocking the material filling port are movably arranged at the material filling port of the material filling hopper, so that the material conveying speed of the material filling port can be adjusted by adjusting the angle of the baffle plates, and the material filling speed can be adjusted by equipment while the material conveying pipe is maintained; plastic particles in the injection hopper are prevented from entering the conveying pipe again to affect maintenance operation, and the maintenance efficiency of the conveying pipe is improved.

The utility model provides an adjustable flushing system of a mechanical direct flushing valve, which comprises a valve body provided with a water inlet channel and a water outlet channel, a control valve used for controlling the on-off of the water outlet channel is arranged on the valve body, and the water inlet channel is communicated with the water outlet channel; a water drainage channel is formed in a cylinder body of the driving cylinder, a movable driving rod is arranged in the driving cylinder, and the driving rod can be in transmission fit with the control valve to open or close the water outlet channel; the water inlet channel communicates with the driving cylinder, and water in the water inlet channel enters the driving cylinder to drive the driving rod to move; and the adjusting piece is arranged on the water drainage channel and can adjust the overflowing sectional area of the water drainage channel. The water drainage speed is controlled by adjusting the overflowing sectional area of the water drainage channel through the adjusting piece, then the moving speed of the driving rod is adjusted, the opening and closing speed of the control valve matched with the driving rod can be adjusted, the opening and closing duration of a water path can be adjusted in a power-off state without using an electromagnetic valve, and the water path can be normally used in the power-off state.

The application relates to the technical field of hydraulic motor testing, in particular to a hydraulic motor series-parallel control valve group, a testing system and a test bench. In the control valve group, in addition to two electromagnetic valves for controlling two hydraulic motors, a first speed regulating valve and a second speed regulating valve are added, so that the rotating speeds of the two hydraulic motors can be adjusted in real time when the hydraulic motors work alone or the two hydraulic motors work in parallel, and the rotating speeds are not affected by the loads of the hydraulic motors; an overflow throttle valve is added, so that the rotating speed of the second hydraulic motor can be adjusted when the two hydraulic motors work in series; a first one-way valve and a second one-way valve are added, so that the air suction problem of the hydraulic motor when the motor fails, the hydraulic pump fails or the rotating speed of the motor decreases from high speed to low speed is solved; the middle position of the electromagnetic valve directly connected with the hydraulic motor adopts a U type, so that the air suction problem of the hydraulic motor when the hydraulic motor works from high speed to stop is solved.

The utility model relates to the technical field of organic fertilizer storage, and provides a valve block slow-closing mechanism and a check valve, the valve block slow-closing mechanism comprises a main body assembly, the main body assembly comprises a valve body, a fixed plate connected in the valve body, a fixed frame connected on the fixed plate, and a valve rod movably connected on the fixed frame; the adjusting assembly comprises a moving plate movably connected to the valve rod, a rack connected to the lower portion of the moving plate, a gear rotationally connected to the rack, a rotating shaft connected to the gear and a rotary knob connected to the rotating shaft. The rotating shaft is rotationally connected to the fixing frame and the valve body. By means of the technical scheme, the problems that in the prior art, when water flows, a valve plate of an existing check valve is driven to be opened under the pressure of the water, the water flows pass through, after the water flows stop, the valve plate is slowly closed under the action of a spring to achieve the slow closing function, but the closing speed and force of the existing valve plate cannot be adjusted according to the actual working condition, and the valve plate cannot be closed slowly are solved. And the use effect is influenced.

The invention relates to a method for operating a wiper device (12), in particular a windscreen wiper, of a vehicle (10), by means of which a windscreen (14) of the vehicle (10) is cleaned in that at least one wiper (16) of the wiper device (12) sweeps over a wiper region (20) of the windscreen (14) at a wiper speed. According to the invention, the wiper speed of the wiper (16) is reduced relative to normal operation at least in a partial region (22) of the wiper region (20) depending on at least one opening parameter of the window pane (18) and / or of the open roof (46) of the vehicle (10).

The utility model discloses a servo type full-automatic double-end pipe end machine which comprises a machine frame. The clamp is arranged on the rack and used for installing a pipe fitting to be machined, and the pipe fitting is used in the compressor; the clamping mechanism is arranged on the rack and is used for fixing the pipe fitting on the clamp; the first machining mechanism is arranged on the rack and located on one side of the clamp, the first machining mechanism comprises a first servo driving mechanism and a first machining component, and the first servo driving mechanism is used for driving the first machining component to machine one end of the pipe fitting; the second machining mechanism is arranged on the rack and located on the other side of the clamp, the second machining mechanism comprises a second servo driving mechanism and a second machining component, and the second servo driving mechanism is used for driving the second machining component to machine the other end of the pipe fitting; the control system is electrically connected with the clamping mechanism, the first machining mechanism and the second machining mechanism. The speed of the machining mechanism can be adjusted easily.

The invention belongs to the field of charging piles, and discloses a charging pile gun line recovery device and method.The device comprises a telescopic assembly, a rotating shaft, a transmission gear, a supporting piece and a transmission assembly; the transmission assembly is fixedly installed at the upper end of the charging pile, the transmission gear sleeves the rotating shaft and is meshed with the transmission assembly, the two ends of the rotating shaft penetrate through the supporting pieces to be fixedly connected with the telescopic assembly, a gun line supporting rod is arranged on the side, away from the transmission gear, of the telescopic assembly, and a first motor is arranged in the transmission assembly. The first motor or the second motor rotates the gun wire supporting rod, the gun wire supporting rod is used for winding the charging pile gun wire, the telescopic assembly or the transmission assembly controls the gun wire supporting rod to rotate, the gun wire supporting rod rotates the charging pile gun wire in the rotating process, and the situation that the charging pile gun wire is abraded to the ground or is directly still on the ground is effectively reduced; the telescopic assembly or the transmission assembly controls the gun line supporting rod to rotate reversely, and it is guaranteed that a client with small strength can operate the gun line easily.

The utility model discloses a kind of rapid cleaning device of sample bottle in threshing and redrying detection room, it includes shell, the top surface of shell is provided with the dust collection groove of top opening, rotation mechanism is equipped in shell, rotation mechanism includes pivot, pivot rotates and is vertically set on the top surface of shell, pivot rotates and is through setting on the groove bottom of dust collection groove, the end of pivot is coaxially connected with cleaning brush, it further includes gas delivery pipe, gas delivery pipe is vertically and fixedly set on the top surface of shell, gas delivery pipe is through setting on the groove bottom of dust collection groove, one end of gas delivery pipe is connected with gas supply system, the other end is connected with air jet nozzle, the inside of groove bottom of dust collection groove is inverted conical, the lowest position of the inside of groove bottom of dust collection groove is equipped with air hole, dust interception net is arranged in air hole, air exhaust pipe is connected below air hole, negative pressure fan is equipped on air exhaust pipe;The device is relative to manual cleaning, and cleaning efficiency is higher, and it is cleaned more cleanly.

This disclosure relates to the technical field of mixing equipment. One embodiment of this disclosure provides a high-temperature refractory mixing device, which includes: a base, a support, and a high-temperature mixing tank. The support is fixed on the base, the high-temperature mixing tank is mounted on the support, a sleeve is rotatably connected to the support via a rotating shaft, a oscillating stirring assembly is disposed between the sleeve and the high-temperature mixing tank, and a feeding / discharging assembly is disposed on the sleeve and the high-temperature mixing tank. The oscillating stirring assembly includes a main motor, which is disposed on the side surface of the support. The output end of the main motor is connected to the rotating shaft of the high-temperature mixing tank. Auxiliary motors are installed on both sides of the high-temperature mixing tank, and stirring frames are disposed at the output ends of the auxiliary motors. The stirring frames are located at both ends inside the high-temperature mixing tank. Through the above technical solution, traditional mixing devices generally suffer from low stirring efficiency and cumbersome discharge processes, making it difficult to meet the refined production requirements of high-temperature refractory materials.

Disclosed by embodiments of the present disclosure are a multimedia file playback control method and a terminal device, the method being applied to a terminal device comprising a first screen and a second screen, and the method comprising: receiving a bending input for a target screen from a user, the bending input being used for triggering a change in folding angle between a first screen and a second screen; adjusting playback parameters of a target multimedia file in response to the bending input; the target screen is the first screen or the second screen; and the playback parameters comprise playback progress and / or playback speed.