17results about How to "Constant speed" patented technology

This utility model discloses a die-cutting device, including a mounting frame, a conveyor roller assembly, a tension roller, a first sensor, a second sensor, and a driver. The conveyor roller assembly includes multiple rotatable conveyor rollers mounted on the mounting frame. The tension roller and the multiple conveyor rollers together form a conveyor line for moving the material belt. The tension roller is slidably mounted on the mounting frame in the vertical direction and can tension the material belt downwards under its own weight. The first sensor is used to detect whether the tension roller is in a first position. The second sensor is used to detect whether the tension roller is in a second position, which is below the first position. The driver is drivenly connected to one of the conveyor rollers and can adjust the rotational speed of the conveyor roller when the first sensor detects that the tension roller is in the first position, or when the second sensor detects that the tension roller is in the second position, so that the tension roller is between the first and second positions. This application can improve the efficiency of roll changing for workers.

A method and system are described to provide a powertrain or driveline for operating a hybrid vehicle including two electric machines and a transmission. In one example, vehicle propulsion is maintained while determining transmission operating parameters to improve transmission operation. In particular, a rear drive unit maintains vehicle speed and monitors torque transmitted via the output of the transmission.

The invention discloses a fan front-end speed regulation constant rotating speed output system and a design method thereof. The fan front-end speed regulation constant rotating speed output system comprises a wind wheel, a front-end speed regulation device connected with the wind wheel, a generator connected with the front-end speed regulation device, a transformer connected with the generator and a power grid connected with the transformer. The front-end speed regulation device comprises a low-speed rotor, a high-speed rotor, a stator winding and a frequency converter; a high-speed rotor of the front-end speed regulation device is connected with a rotating shaft of the generator, and a low-speed rotor of the front-end speed regulation device is connected with a rotating shaft of the wind wheel and fixed with the stator winding; according to the fan front end speed regulation constant rotating speed output method, automatic regulation can be conducted according to the rotating speed change of a wind wheel to ensure that the rotating speed of a generator is kept constant, so that the generator outputs electric energy with constant frequency, and a transmission chain has the advantages of being sensitive in speed regulation, large in speed regulation range, simple in structure, convenient to control, high in efficiency, low in maintenance cost, high in reliability and the like.

The application discloses a sludge treatment method and a treatment system, and belongs to the technical field of environmental protection. The system comprises a sludge pool, a sludge metering hopper, a sludge mixing machine, a sludge hopper and a dewatering device. The dewatering device comprises a filter pressing structure and two cloth stacking machines. The filter pressing structure can move forward and backward to be directly below the filter pressing structure. The cloth stacking machine can reciprocate forward and backward to stack the filter cloth in the filter pressing structure. One cloth stacking machine is used for feeding or discharging, and the other cloth stacking machine is used for filter pressing. The cloth stacking machine comprises a reciprocating driving mechanism, a rack and a conveying mechanism on the rack, an upper filter cloth operating mechanism, a feeding mechanism, a lower filter cloth operating mechanism and a mud pressing roller. The lower filter cloth operating mechanism comprises a lower cloth winding assembly, a lower deviation rectifying detection assembly, a first lower flattening assembly, a lower material scraping assembly, a second lower flattening assembly and a traction assembly. The upper filter cloth operating mechanism comprises an upper cloth winding assembly, an upper deviation rectifying detection assembly, an upper flattening assembly, an upper material scraping assembly and a cloth pressing roller.

The utility model discloses a speed simulation device for calibration of a speed test module, and relates to the technical field of photoelectric measurement. The rotary driving part is assembled at the top end of the mounting bracket; the rotation simulation part is assembled on an output shaft of the rotation driving part, the rotation driving part drives the rotation simulation part to rotate, and the instantaneous speed of train equipment monitored by pantograph dynamic monitoring equipment when the train equipment passes is simulated; the adjusting guide rail is assembled on the mounting bracket; and the measuring piece is assembled on the adjusting guide rail in a sliding manner and is used for measuring the number of times and interval time when the rotating simulation piece passes through in a rotating manner with different distance measuring radiuses. The rotation driving part drives the rotation simulation part to rotate, the instantaneous speed monitored by the pantograph dynamic monitoring equipment when train equipment passes is simulated, and compared with the speed change simulated by a horizontal movement mechanism, the motion range of the device is not limited, large impact cannot be generated, the target operation speed is constant, and the simulation calculation speed is more accurate.

The invention discloses a horizontal type self-adaptive girder belt winding unit which comprises an assembly bottom plate, a self-adaptive material pressing and winding mechanism and a split type material collecting and discharging mechanism. The self-adaptive material pressing and winding mechanism comprises a sliding assembly plate, a pressing roller is rotationally assembled above the sliding assembly plate, and a pressing cover is arranged above the pressing roller in a matched mode. And the split type winding and unwinding mechanism comprises an unwinding wheel, the unwinding wheel is rotationally assembled on one side of the pressing roller, a guide wheel is arranged above the unwinding wheel, a hot air gun nozzle is arranged above the guide wheel, and a winding wheel is rotationally assembled on the side, away from the unwinding wheel, of the assembly bottom plate. According to the horizontal type self-adaptive girder belt winding unit, when a fiber prepreg belt is wound and formed, the winding tension and the winding speed can be automatically adjusted, the fiber winding stability is guaranteed, the product quality is improved, the risk that a PE isolation film is stacked, twisted or snapped in the recycling process is reduced, and the production efficiency is improved. And the overall production efficiency and the regularity of products can be improved.

The invention provides a snow pressing vehicle and a control method thereof, and relates to the technical field of snow pressing vehicles. The snow pressing vehicle comprises a main controller; the closed hydrostatic transmission loop group is integrally controlled by the main controller, oil is supplied to the loop group through a unified hydraulic pump station, and the loop group comprises a walking hydraulic loop which comprises a left walking pump, a right walking pump, a left walking motor and a right walking motor, and the left walking motor and the right walking motor are connected with the left walking pump and the right walking pump respectively and used for independently driving tracks on the two sides to achieve running and steering of the vehicle; the working device hydraulic circuit comprises a snow plough pump and a snow plough motor driven by the snow plough pump, and is used for driving a snow roller of a snow plough to perform snow beating operation; the auxiliary action hydraulic circuit comprises an action oil cylinder used for controlling multiple degrees of freedom of the snow shovel and a posture oil cylinder used for controlling the posture of the snow plough. By adopting the closed hydrostatic transmission loop group and the main controller for centralized control, the problem of coupling interference easily occurring when each hydraulic loop of the traditional snow pressing vehicle works independently is solved, and the snow pressing vehicle has stronger anti-interference capability and better controllability.

The constant-tension bidirectional fabric rolling and cropping integrated device comprises a guide rail, a first rolling frame and a second rolling frame are fixedly connected to the guide rail, and a first pressing arm assembly and a second pressing arm assembly are arranged on the sides, away from each other, of the first rolling frame and the second rolling frame correspondingly; two moving frames corresponding to the first pressing arm assembly and the second pressing arm assembly respectively are connected to the guide rail in a rolling mode, and cloth rollers and cloth motors driving the cloth rollers to rotate are arranged on the moving frames. A fabric conversion assembly is arranged between the first cloth rolling frame and the second cloth rolling frame, a tension control assembly is arranged at the position, located above the first pressing arm assembly, of the first cloth rolling frame, and a cloth falling mechanism is arranged at the position, located above the second pressing arm assembly, of the second cloth rolling frame. The cloth rolling and cropping integrated machine has the advantages that a cloth rolling structure and a cloth cropping structure are integrated, different working states of cloth rolling and cropping of fabric can be freely switched, the operation cost is reduced, and the working efficiency and the fabric rolling quality are improved.

This utility model discloses a sheet composite device based on sheet packaging, comprising: a mounting plate, on one side of which a sheet feeding roller for introducing flexible sheets is rotatably mounted, and a preliminary composite roller is provided on one side of the sheet feeding roller. This utility model uses an angular velocity sensor to monitor the speed differences of the guide roller, the preliminary composite roller, and the sheet feeding roller in real time, and automatically adjusts the chain tension with an electric telescopic rod to achieve synchronized speeds of the three rollers; a servo motor dynamically adjusts its output speed according to the real-time thickness of the protective film and the composite sheet to ensure a constant feeding speed, effectively avoiding the composite misalignment or wrinkling problems caused by material thickness variations in traditional devices; the exhaust roller adopts a film-coated rubber sleeve design, with its central part bulging outward to form a gradient pressure zone, with the highest pressure in the middle area and gradually decreasing at both ends, which can powerfully expel air between the sheet and the protective film, significantly improving the composite tightness and reducing air bubble residue.

The present invention provides a machine for applying adhesive tape to automobile sealing strips, comprising a conveying device, a grinding device, a xylene spraying device, a glue spraying device, a drying device, an adhesive tape applying device and a defective product ejecting device; the conveying device is installed on a rack, a driving device is provided at the bottom of the rack, the driving device is connected to the conveying device by transmission, and a grinding device, a xylene spraying device, a glue spraying device, a drying device, an adhesive tape applying device and a defective product ejecting device are installed on the top of the rack in sequence, a defective product detecting device is provided on the glue spraying device, and the grinding device, the xylene spraying device, the glue spraying device and the adhesive tape applying device are all installed on the rack through a servo screw; a numerical control system is used for control, so that the conveying device, the grinding device, the xylene spraying device, the glue spraying device, the drying device, the adhesive tape applying device and the defective product ejecting device can cooperate to complete the entire adhesive tape applying operation of the sealing strip.

The application relates to a method for judging the low-temperature plasticizing capacity of polyethylene, which detects the peak temperature, lamella thickness, methylene sequence length and peak area of each fraction of a polyethylene sample by testing the resin chain structure branching degree and the performance of the aggregate structure through SSA, establishes the correlation with the plasticizing condition of the polyethylene, and realizes the rapid evaluation of the plasticizing condition of the polyethylene in the low-temperature extrusion.

The utility model relates to a high-flow mute volumetric air pump which comprises a lower shell, a PCBA (printed circuit board assembly) arranged in the lower shell, a stator, a rotor, an air path assembly and an upper shell, the stator is installed on the PCBA board, the rotor is installed on the stator and rotates relative to the stator, the rotor is sleeved with the air path assembly, a plurality of air paths distributed in a spiral upward mode are arranged on the air path assembly, a plurality of rolling bodies are arranged on the rotor, and the shortest distance between the adjacent rolling bodies is smaller than the transverse distance between the air path upper exhaust hole and the air path lower air inlet hole. When the rolling bodies rotate along with the rotor to press the uppermost end of the air path, the adjacent rolling bodies can press the tail end of the air path, the upper shell is installed on the lower shell, the upper shell is provided with an outer exhaust area and an inner air inlet area, the outer exhaust area is communicated with the upper end of the air path assembly, and the rotor is communicated with the inner air inlet area. The air pump is continuous and pulseless in exhaust, axially symmetrical in structure, free of axial vibration in the operation process, free of a valve one-way valve structure, low in operation noise, capable of achieving integrated design and small in size.

This utility model discloses a crusher, belonging to the field of crushing equipment. A top sealing cover is bolted to the upper end of the crusher casing. A material conveying pipe is installed on the side wall of the top sealing cover. A first drive shaft and a second drive shaft are sequentially installed on the side wall of the crusher casing from bottom to top. A first gear and a second gear are respectively connected to the ends of the first and second drive shafts, achieving connection through the first and second gears. A first crushing and grinding wheel is installed on the shaft of the first drive shaft, and a second crushing and grinding wheel is installed on the shaft of the second drive shaft. This crusher, through the precise dual-stage design of the crushing and grinding system, the forced synchronization and power guarantee of the transmission system, and the controllability and sealing design of the material feeding and discharging mechanism, achieves a high degree of synergy among these three elements, ultimately realizing comprehensive superior performance in terms of high-efficiency crushing, controllable particle size, stable operation, flexible operation, and environmental friendliness, significantly improving the practical value and economy of the equipment.

This utility model relates to the field of polishing module technology and discloses a multifunctional electric polishing module, including a robotic arm fixing rod. A motor bracket is mounted on the robotic arm fixing rod, and a dual-head motor and a single-head motor are mounted on the motor bracket. A grinding eccentric shaft is mounted on the dual-head motor, and a square grinding head is mounted on the single-head motor. This utility model is applicable to various industrial fields, utilizing modular design to ensure functional versatility. It is particularly suitable for the field of robotic polishing, performing polishing of various products and achieving one-time polishing. By changing different sizes and types of grinding heads, seamless switching can be achieved, expanding the application range and improving production efficiency. The grinding head speed can be precisely controlled and kept constant according to the processing technology of different products, ensuring a constant grinding linear speed during polishing and improving product polishing yield. Furthermore, different grinding heads can be installed according to different process requirements, enabling rapid switching between product polishing processes.

The utility model discloses a two -stage double -cylinder hydraulic device. The hydraulic device includes: cylinder cover, cylinder base, upper hydraulic cylinder, lower hydraulic cylinder, first oil pipe, second oil pipe, rodless cavity oil pipe, rod cavity oil pipe and connecting rod, be provided with upper hydraulic cylinder, lower hydraulic cylinder, rodless cavity oil pipe, rod cavity oil pipe and connecting rod between cylinder cover and cylinder base, the upper hydraulic cylinder includes upper cylinder barrel and the upper piston rod telescopic in upper cylinder barrel, the upper piston rod passes through cylinder cover and can telescopic stretch out upward, the lower hydraulic cylinder includes lower cylinder barrel and the lower piston rod telescopic in lower cylinder barrel, the lower piston rod passes through cylinder base and can telescopic stretch out downward, first oil pipe is communicated with the rodless cavity of upper cylinder barrel and the rodless cavity of lower cylinder barrel through rodless cavity oil circuit and rodless cavity oil pipe, and second oil pipe is communicated with the rod cavity of upper cylinder barrel and the rod cavity of lower cylinder barrel through rod cavity oil circuit and rod cavity oil pipe. The device is more suitable for square column lifting of operating table.