53results about How to "Flexible speed control" patented technology

The invention discloses a hand-held automatic winding machine and a using method thereof. The hand-held automatic winding machine comprises a handle, a control switch, a transmission box, a motor, a first driven gear, a drive gear, a second driven gear, a winding rotator, a coil, a line clamping mechanism, a first swing arm, a guide block, a knife edge and a second swing arm. The transmission shaft of the motor drives the drive gear to transmit power to the driven gears, the driven gears rotate in same speed and direction and are engaged with the winding rotator, and the transmission shaft of the motor transmits power to the winding rotator; the swing arms rotate in the same speed as the winding rotator; when the line end is led out, the line end is fixedly wound on an object to be wound axially through the guide block, the coil rotates the object to be wound when an operator presses the control switch, and the purpose of winding is achieved. By the aid of the machine, winding intensity of the operator is reduced greatly, and winding efficiency is improved greatly.

The present invention discloses a hybrid power drive system of motor coach, and belongs to the technological field of vehicle engineering; wherein, an engine is coaxially connected with an integrated starting generator; the integrated starting generator is connected with an automatic clutch driving disc; the automatic clutch is connected with a reducing mechanism through a driving motor; the reducing mechanism is respectively connected with the driving motor and a main reducer-differential; the main reducer-differential is connected with vehicle wheels through a driving bridge; a power battery is connected with a motor controller through a cable; and the motor controller is respectively connected with the integrated starting generator and the driving motor through a cable. The hybrid power drive system maintains the traditional vehicle structure to the greatest extent, and adopts two motors to optimize the working points of the engine, so that the engine can stably operate in the high-efficiency and low-emission regions, in particular in the operating conditions of low-speed city buses.

The invention relates to a method for vertically laying HDPE geomembranes underground. In the method, a crane, a membrane expansion frame, a fixed depression bar and a balance weight are adopted. The method for vertically laying the geomembranes comprises the following steps; through the adoption of the technical scheme of the method disclosed by the invention, a vertical soft anti-seepage wall of continuous underground HDPE geomembranes can be established, so that migration and diffusion of contaminated soil or contaminants in underground water can be controlled, and further appropriate comprehensive methods for treating the contaminants can be adopted to gradually reduce and remove the contaminants, and recover the soil and water; the method disclosed by the invention is mature in equipment and technology, and safe to operate, and the vertical paving depth and the vertical paving speed can be flexibly controlled; the free combination of the balance weight and the HDPE geomembranes and the separation of the balance weight from the HDPE geomembranes are realized, and besides, the length and the width of the frame can be adjusted according to the needs of engineering, so that the construction efficiency is improved; the HDPE laying speed is controlled; the HDPE geomembranes can be stabilized and prevented from floating upwards; the purpose for vertically putting down the HDPE geomembranes is achieved by utilizing the free combination of the HDPE geomembranes and the membrane expansion frame and the separation of the HDPE geomembranes from the membrane expansion frame; and the continuity and the completeness of a wall body are guaranteed. The method disclosed by the invention is simple to operate, free from secondary pollution, safe and environmental friendly.

The substrate treatment apparatus 10 includes a housing shape cover 11 having a substrate input port 11a and a substrate discharge port 11b provided in parallel in a vertical direction, and a treatment mechanism 20 mounted in the cover 11. The apparatus 10 further includes the treatment mechanism 20 having a conveying/supporting means for receiving and supporting the substrate conveyed from the input port 11a and discharging the substrate from the port 11b, a support substrate 21 for supporting the conveying/supporting means, a substrate inclining means for inclining the substrate supported by the conveying/supporting means, and a treatment fluid discharge means arranged above the substrate/supporting means to discharge a treatment fluid on the substrate inclined by the substrate inclining means, and a lifting means 40 for supporting the treatment mechanism 20, lifting the treatment mechanism 20 in a vertical direction and making the treatment mechanism 20 pass via the port 11a and the port 11b.

The automatic bicycle speed variator mounted on the shaft has power input chain wheel, speed varying output hub, speed variator and speed variation controller inside the hub casing. The speed variator includes three planetary gear trains with separated speed varying ratchet wheel and three ratchets separately fitting these three ratchet wheels inside the hub casing. The speed variation controller includes one second and one third centrifugal block balancing discs with hinged centrifugal block each, and the each of the centrifugal blocks has axial ratchet shifting rod connected to the ratchet. In the automatic bicycle speed variator, the ratchets and the ratchet wheels for the medium speed and high speed are controlled with the centrifugal blocks of different masses, so that the present invention has flexible speed variation and easy speed variation control.

The present invention relates to the field of fertilization technology, and especially relates to a fertilization test platform, which comprises a soil tank, a trolley, an air-conveying fertilizer apparatus and a measurement and control system. The trolley is arranged on a track and is driven to move along the direction of the track by a hydraulic motor. The air-conveying fertilizer apparatus comprises a motor, a fan, a fertilizer applicator, a fertilizer sowing pipe and an air supply pipe. The motor drives the fertilizer applicator to convey the fertilizer into the fertilizer sowing pipe. One end of the air supply pipe is connected with the fertilizer sowing pipe, and the other end of the air supply pipe is connected with the fan. The measurement and control system comprises a control unit and an acquisition unit. The acquisition unit comprises an air pressure sensor, an air speed sensor and a speed measurement encoder. By means of the fertilization test platform, the condition of a paddy field can be repeatedly simulated. Meanwhile, during the air-conveying fertilizer sowing process, parameters such as air pressure, air speed, the displacement of the trolley, the speed of the trolley and the like, can be acquired and processed in real time. Therefore, the fertilizer sowing amount of a fertilizer sowing wheel at different rotation speeds in different intermittent rotation conditions and the distribution state of the fertilizer can be tested.

The invention discloses a magnetorheological fluid variable damping carrier roller, and belongs to the technical field of mechanical braking. A magnetorheological fluid variable damping part is additionally arranged in an undamped carrier roller, namely, a rotating magnetic ring (9) is embedded into a rotating shell (6) in an interference mode, the rotating magnetic ring and a rotating magnet vane (11) are fixedly connected through a bolt, a gap between the rotating magnet vane and a static magnetic barrel (10) is filled with magnetorheological fluid (8) and sealed through a sealing ring (12), a magnet exciting coil (7) is fixed into a groove of the static magnetic barrel, and the static magnetic barrel and a static shaft (1) are connected in an interference fit mode. The magnetorheological fluid variable damping carrier roller is simple and compact in structure and flexible and convenient to control, and cost is remarkably reduced; controllable damping force can be provided, the rotating speed of a rotating part of the carrier roller is effectively reduced, the overspeed phenomenon is avoided, reliability of a belt conveyor is improved, and safe production is guaranteed.

The invention discloses a nano-magnetic fluid huff-and-puff oil extraction method and well network structure for extra-heavy oil and super-heavy oil reservoirs. A huff-and-puff well, magnetic source wells and monitoring wells constitute a huff-and-puff well group in an oil reservoir exploitation area; electromagnets are fed into shafts of the huff-and-puff well and the magnetic source wells; a nano-magnetic fluid dispersing solution is injected into the huff-and-puff well; the downhole electromagnets of the magnetic source wells are started, and the magnetic flux is adjusted, so that a large magnetic field is formed in a target oil layer by the magnetic source wells; the electromagnets of the magnetic source wells are shut off, meanwhile, the electromagnet of the huff-and-puff well is started, and the magnetic flux is adjusted, so that nano-magnetic fluids which enter the deep oil layer flow back under the action of the magnetic force of the huff-and-puff well; and the huff-and-puff well is opened for production. According to the nano-magnetic fluid huff-and-puff oil extraction method and well network structure, the nano-magnetic fluids are injected into the oil layer and then spreads in a wide range outwards under the action of the magnetic field of the magnetic source wells, the viscosity of crude oil is reduced, and the nano-magnetic fluid huff-and-puff oil extraction method and well network structure has the advantages of being wide in huffing and puffing range of oil reservoirs where injected media are used, high in oil extraction rate during huff-and-puff recovery, high in huff-and-puff recovery rate and the like.

The invention discloses a nerve axon stretching grower which consists of a culturing and stretching control system and a mechanical device, wherein the culturing and stretching control system comprises a cell culture box, an upper computer, a controller and a stepping motor; the mechanical device comprises a coupler which is connected with the stepping motor, a ball screw linear sliding table, a stretching connecting block, a cell stretching grower, a device supporting rack and a chassis; the controller is connected with and drives the stepping motor to rotate so as to drive the ball screw linear sliding table at one end of the coupler to generate displacement, and the cell stretching grower is fixedly arranged on the device supporting rack and is used for indirectly stretching nerve axons by virtue of the stretching connecting block which is fixedly arranged on the linear sliding table. Different input commands can be set by virtue of the controller so as to regulate the growing direction and speed of the nerve axons. In addition, electrode contacts can be plated on a stretching film and a bottom film and can be connected with a multichannel neural signal recording and stimulating system for recording neural signals of the nerve axons and selectively stimulating different sites.

The invention discloses a method for improving the organic field effect transistor mobility through rapid annealing. The method comprises the steps that a gate insulating substrate with a polymer modifying layer is prepared; rapid annealing is carried out on the gate insulating substrate; an organic semiconductor layer and source and drain electrodes are evaporated on the polymer modifying layer to prepare an organic field effect transistor; the transfer characteristic curve of the transistor is tested; the corresponding mobility is extracted; and the average mobility is calculated. The invention further provides the organic field effect transistor prepared by the method for improving the organic field effect transistor mobility through rapid annealing. The invention further provides the preparation method of the organic field effect transistor. According to the invention, the mobility of the organic field effect transistor is effectively improved through a simple solution processing technology, which is convenient for popularization and application.

The invention provides an assembled tower type crane with a mobile balancing weight system. The assembled tower type crane comprises a steel structure base, a jacking sleeve frame, a tower body, a rotary supporting device, a lifting arm, a lifting hook, a tower head, a pull rope, a balancing arm, a lifting arm amplitude variation mechanism, a lifting mechanism, a control chamber and the mobile balancing weight system, wherein the balancing weight system comprises a balancing weight, a balancing weight bearing trolley, a balancing weight traction mechanism, a traction steel wire rope, a steering pulley and a control system; the balancing weight bearing trolley bears the balancing weight to move along the balancing arm; the mobile balancing weight can reduce unbalanced torque on the tower body and improve the stress condition of the tower body, so that the hoisting capacity of the tower crane is improved or under the same hoisting capacity, the sectional size and the weight of the tower body are reduced; and therefore, the processing cost is lowered, and transportation, mounting, dismounting and on-site carrying are facilitated. The assembled tower type crane has the advantages of small structural size and light weight of the tower body, high safety, flexibility in lifting, high construction efficiency and the like and can meet an assembling requirement on all types of power transmission line iron towers with various voltage levels.

The invention discloses a high-pressure oil feeding pump assembly for a diesel engine common rail system. The high-pressure oil feeding pump assembly for the diesel engine common rail system comprisesa pump body part, an oil delivery pump part, an oil pumping system part, a pressure stabilizing valve part and a fuel oil metering valve part, wherein the oil delivery pump part, the oil pumping system part, the pressure stabilizing valve part and the fuel oil metering valve part are connected with the pump body part. The pump body part comprises a pump body, a driving shaft part and a tappet body part. A bearing pedestal and a tappet body installation hole are arranged in the pump body part. The driving shaft part comprises a camshaft. The tappet body part is installed in the tappet body installation hole of the pump body, and a rolling wheel on the lower portion of the tappet body part makes contact with a cam on a shaft portion shaft. The oil delivery pump part is driven by the camshaft to generate the negative pressure so as to suck diesel oil from a diesel oil tank. The pressure stabilizing valve part and the fuel oil metering valve part are connected in parallel, and the fuel oil metering valve part quantitatively conveys the low-pressure diesel oil to the oil pumping system part. The oil pumping system part enables the diesel oil metered by the fuel oil metering valve partto be pressurized and then drives the diesel oil to enter a common rail pipe. The two ends of the camshaft are connected with the bearing pedestal on the pump body and a bearing pedestal support on ashaft cover plate part through two bearings correspondingly.

A special fan for a road sweeper comprises a fan housing, an impeller, a fan air inlet, an air inlet pipe, a silencer, a spindle, a bearing seat, a bearing and a support, wherein the impeller is arranged in the fan housing, the fan air inlet is arranged on the fan housing, the bearing seat and the bearing are used for supporting the spindle, and the support is used for supporting the integral fan. One end of the spindle is connected with the impeller, the other end of the spindle is driven by an engine of the road sweeper through a belt pulley, the fan is integrally fixed in a road sweeper carriage through the support, the air inlet pipe is arranged at the bottom of the road sweeper carriage, one end of the air inlet pipe is connected with the fan air inlet, and the other end of the air inlet pipe is connected with a sucker of the road sweeper. One end of the silencer is mounted at an air outlet of the fan housing, and the other end of the silencer penetrates through the top of the carriage to the atmosphere. The special fan is simple in structure and low in noise. By accurately arranging internal components of the fan and optimizing the runner of the fan, fluid in the runner can flow more smoothly to be more accordant with practical runner state of airflow in the runner, loss caused by vortex is reduced and efficiency of the special fan for the road sweeper is improved.

The invention discloses a mini-tiller gear shift speed change mechanism. The mini-tiller gear shift speed change mechanism comprises a box body, a spindle assembly, a gear shift speed change assembly and a reverse gear assembly. The gear shift speed change assembly comprises a countershaft, a synchronous double-gear, a countershaft gear shift gear, a gear shift double-gear, a countershaft gear ring and a worm rod, wherein the synchronous double-gear, the countershaft gear shift gear, the gear shift double-gear, the countershaft gear ring and the worm rod are sequentially sleeved outside of the countershaft. The gear shift speed change assembly further comprises a worm rod mesh gear for controlling the countershaft gear ring and the worm rod to mesh and separate, wherein the worm rod mesh gear is sleeved outside the worm rod and can move along a shaft of the worm rod. Through the mutual matching action of three gear shift devices which are the countershaft gear shift gear, the gear shift double-gear and the worm rod mesh gear, the walking speed change of the mini-tiller is achieved, gears are arranged more, the mini-tiller speed is more flexible to control, and under different environments, the selectivity is stronger. The invention further discloses a mini-tiller which uses the mini-tiller gear shift speed change mechanism. The mini-tiller has the advantages of being low in power loss, low in failure rate, strong in reliability, low in working noise and capable of working normally in various complicated working places and environments.

The invention provides a data transmission method and system based on an electromagnetic shielding body, the method is applied to a data sending end in the electromagnetic shielding body, and the method comprises the following steps: receiving communication data sent by each electronic information device; sequentially caching the communication data to a first ping-pong cache space and a second ping-pong cache space through ping-pong cache; caching the communication data cached in the first ping-pong cache space and the second ping-pong cache space to a corresponding first annular queue according to the data type of the communication data; reading the communication data cached in the first annular queues in sequence for data splicing to obtain spliced data; and sending the spliced data to a data receiving end outside the electromagnetic shielding body through an optical fiber. The communication data generated by the plurality of electronic information devices in the electromagnetic shielding body are cached in a ping-pong cache and annular queue mode, so that the problem of data loss caused by processing the data generated by the plurality of electronic information devices at the same time is avoided, and the validity and stability of data processing are ensured.

The invention relates to an automated greenhouse used for producing agricultural products. The automated greenhouse comprises a base, a main body and a sweeping mechanism; an air guide mechanism and two ventilation mechanisms are arranged in the main body, the air guide mechanism comprises a rotary shaft, a speed adjusting assembly, two blades, two casing pipes and two suspension rods, and the speed adjusting assembly comprises a translation unit, a connecting block, a first motor, a driving block and a turntable; the sweeping mechanism comprises a sweeping frame, two movable assemblies and several sweeping assemblies; each sweeping assembly comprises a swinging rod, a steering unit, a connecting plate, a spring, a sweeping plate and two orienting rods. According to the automated greenhouse used for producing the agricultural products, through the sweeping mechanism, accumulated snow on the main body can be swept away, so that the good light transmittance of the main body is restored,and photosynthesis is facilitated; moreover, according to the flow rate of external air, the air guide mechanism automatically adjusts the rotary speed of the blades, so that stable ventilation insidethe main body is kept, carbon dioxide is supplemented while moisture is conveniently discharged, the growth of plants is promoted, and the practicability of the automated greenhouse is improved.

The invention provides a double-sided laminating machine driving mechanism, comprising a frame, a rubber upper wheel rotatably installed in the frame, and a rubber upper wheel rotatably installed in the frame and located on the upper rubber wheel The lower rubber wheel directly below, the first power mechanism for driving the upper rubber wheel to rotate, and the second power mechanism for driving the lower rubber wheel to rotate, through the first power mechanism and the The second power mechanism drives the speed of the upper rubber wheel and the lower rubber wheel to be controlled synchronously, so that the upper conveyor belt driven by the upper rubber wheel and the lower conveyor belt driven by the lower rubber wheel run synchronously. Through the unique structural design, it flexibly controls the second power mechanism of the present invention and the rotation speed of the servo motor of the second power mechanism, realizes the instant synchronization of the upper and lower rubber wheels, and effectively overcomes the defective cardboard produced due to the speed deviation of the upper and lower conveyor belts. Extend the service life of upper and lower rubber wheels and conveyor belts, improve work efficiency and reduce maintenance costs.