17results about How to "Easy to control speed" patented technology

The invention discloses a synthetic method of a water soluble ultraviolet light absorber BP-9. The method mainly comprises the following process steps: (1) carrying out methylation on the main raw materials of 2, 2', 4, 4'-tetrahydroxyl benzophenone, a transition metal salt catalyst and a mixed solvent which is prepared from dichloroethane and anhydrous ethanol in equal parts by weight to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone; (2) carrying out sulfonation reaction on the main raw materials of methylate, sulfamic acid and C1-C3 halohydrocarbon to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone-5, 5'-disulfonic acid; and (3) carrying out neutral reaction on the main raw materials of sulfonated product, inorganic base and ethanol water to finally obtain the BP-9 product. The synthetic method disclosed by the invention is few in reaction step, low in cost, high in product purity and stable in quality, and raw materials are easily available.

The invention discloses a Bluetooth communication method and device of intelligent devices and a readable storage medium, applied to a mobile terminal, the method comprises: monitoring a first number of intelligent devices having established a Bluetooth connection with the mobile terminal, the intelligent devices having a Bluetooth connection function, and the first number being greater than 1; if it is monitored that Bluetooth connection of a second number of intelligent devices fails, scanning is carried out again, and the second number is smaller than the first number; and performing Bluetooth connection based on the second number of intelligent devices which have the strongest signal intensity after scanning and belong to the group, thereby ensuring stable communication between the mobile terminal and the intelligent devices, and improving the working efficiency of the intelligent device system.

The application relates to the field of mechanical arm control, and discloses a mechanical arm speed control method and device, computer equipment and a storage medium, the method comprising the following steps: acquiring an actual position of a robot end flange at a current moment, and acquiring a desired position of the end flange of the mechanical arm at a next moment according to path planning of the mechanical arm; calculating a control speed of the mechanical arm at the current moment according to the actual position, the desired position and a preset trajectory tracking model; performing inverse Jacobian transformation on the control speed to obtain corresponding motor output force, and performing corresponding control according to the motor output force. The movement of the mechanical arm can be controlled in a speed control mode, the control speed and real-time performance are improved, and control errors are reduced.

The application discloses a contact type laser scalpel convenient for speed control, and relates to the technical field of laser scalpel, which comprises a joint, a scalpel head arranged at the bottom end of the joint, and support assemblies symmetrically arranged on the two sides of the scalpel head; the support assembly comprises a spreading part, the spreading part is arranged in an inclined mode, the distance between the two spreading parts gradually decreases in the vertical upward direction, and the top end of the spreading part is hinged to the joint; the bottom end of the spreading part is in contact with human tissue S, and when the scalpel head is pushed down, the bottom ends of the two spreading parts gradually move away to push the wrinkled human tissue S flat. Two inclined spreading parts are symmetrically arranged on the two sides of the scalpel head, when the scalpel head is pushed down, the downward movement of the scalpel head can drive the bottom ends of the two spreading parts to gradually move away, so that the wrinkled human tissue S can be pushed flat, the bleeding part buried in the wrinkles is exposed, hemostasis is facilitated, the whole hemostasis process is short, the speed can be conveniently controlled, and the actual hemostasis efficiency is improved.

This utility model discloses an adjustable-angle concrete unloading chute device, relating to the field of concrete construction technology. It includes a base, a lifting plate, a main chute, and an auxiliary chute. Two guide rails are fixedly connected to the upper end of the base, and servo motors are fixedly installed on the upper ends of each guide rail. Threaded rods are fixedly connected to the power output ends of the servo motors. A lifting plate is located above the base, and sliders are fixedly connected to both sides of the lifting plate. The servo motor drives the threaded rods, and in conjunction with the sliders and guide rails, the chute height can be precisely and conveniently adjusted to accommodate unloading points of different heights. The auxiliary chute, through a limiting strip cooperating with the limiting groove of the main chute, can slide flexibly and be locked using fixing screws. The total length of the chute can be flexibly adjusted according to the unloading distance. Furthermore, a servo cylinder can adjust the tilt angle of the main chute, facilitating control of the concrete unloading flow direction and speed, making the unloading process more in line with construction needs, and improving construction efficiency and quality.

The application discloses a mechanical movement system and an automatic system for ultrasonic detection in a limited space, which comprises a shell, a sliding plate, a Z-axis lifting assembly, a rotating assembly, a linear guide rail and a clamp, the Z-axis lifting assembly and the linear guide rail are arranged on the inner wall of the shell along the axial direction of the shell respectively, and the clamp is fixed to the bottom of the shell, one side edge of the sliding plate is connected with the lifting part of the Z-axis lifting assembly, and the other side edge of the sliding plate is slidably sleeved on the linear guide rail, the rotating assembly is fixed to the middle position of the sliding plate, and the axis of the rotating assembly is coaxial with the central axis of the clamp. The application combines each system with each other, finally forms an automatic system for integral detection, and completes the detection work, so that the detection efficiency is greatly improved, the system can implement the detection on the surfacing weld in the inner wall of the limited space, and meets the requirements of technical conditions and standard specifications.

The application provides a speed control system of a weak magnetic method stress on-line detector and a control method thereof. The detector speed control system is used for detecting a component to be detected. The detector speed control system comprises a control structure and a control module. The control structure and the control module are signal connected. The control structure comprises an inner shell, an outer shell, a driving motor, a blade, a first flow hole, a second flow hole and a speed measuring sensor. The inner shell is arranged in the outer shell. The first flow hole is arranged between the inner shell and the outer shell. The driving motor is arranged in the inner shell. The output end of the driving motor is connected with a rotating rod. One end of the rotating rod which is arranged to pass through the side wall of the inner shell is connected with the blade. A plurality of second flow holes are arranged on the side wall of the outer shell which is close to the blade. The first flow hole is connected with the second flow hole. The problems that the existing nondestructive detection device cannot control the running speed when working in the pipeline, the detection precision is poor, the detection time is increased and the detection efficiency is reduced are solved.

The invention discloses a material pressing device and a material pressing method for a vehicle back door outer plate, and relates to the technical field of material pressing, the material pressing device comprises an upper sliding block and a lower working table which are arranged in the vertical direction, the upper sliding block can move towards or away from the lower working table in the vertical direction, and a die pressing structure is located between the upper sliding block and the lower working table; the upper die is fixedly connected with the upper sliding block, the lower die is fixedly connected with the lower workbench, the upper die and the lower die are oppositely arranged in the vertical direction, the first material pressing plate can move in the vertical direction relative to the upper sliding block, and the second material pressing plate can move in the vertical direction relative to the lower workbench. The first pressing plate and the second pressing plate are additionally arranged to participate in pressing at the same time, uniform pressure can be applied in the pressing process, the flowing direction of plates is limited, process fluctuation caused by material movement is reduced, the problems of flowing and forming of the plates, R-angle sliding lines and the like in the forming process of workpieces such as a back door outer plate are solved, and the product quality is improved. And therefore, the product quality and consistency of the workpieces can be effectively improved.

The application provides a kind of electric power strong clamping device, including shell, clamping arm, rotating assembly, fork, screw rod, nut, frameless motor, rotating shaft, encoder and drive assembly;The shell has a channel for linear motion of the screw rod and the fork, the clamping arm is connected to the fork through the rotating assembly, the fork is fixedly connected to one end of the screw rod, the other end of the screw rod is screwed with the nut, the outer periphery of the nut is fixedly connected with the rotating shaft, the rotating shaft is drivingly connected with the frameless motor, the clamping arm is located on both sides of the upper end of the shell, so that the clamping arm switches between tightening and opening state with the movement of the screw rod;The frameless motor is fixed in the shell, the encoder is located below the rotating shaft, the drive assembly is located on one side of the shell, and the drive assembly is electrically connected with the frameless motor through the encoder.

The invention discloses an intelligent panel type fire-fighting voltage-stabilizing control system which comprises a power supply loop, a main loop, a secondary control loop, a voltage-stabilizing pump controller and a signal acquisition module which are arranged in a fire-fighting cabinet, the power supply loop adopts a three-phase four-wire system power supply inlet wire, the main loop comprises two groups of alternating current contactors, a thermal relay and a water pump motor which are sequentially connected in series, the secondary control loop comprises a controller fuse, an intermediate relay and an indicator lamp, and the stabilized voltage pump controller is provided with a MicroSD card to record working state data. The signal acquisition module comprises a pipe network pressure transmitter, a water tank liquid level transmitter and a float switch; by integrating the intelligent control module and optimizing the circuit structure, the problems of low integration level, poor automation degree and insufficient reliability of the existing fire-fighting voltage-stabilizing control system are solved, and the fire-fighting voltage-stabilizing control system has the advantages of high flexibility, complete protection functions, high intelligence degree, strong communication capability, high integration level, safety, energy conservation and high precision; the method can be widely applied to fire-fighting water supply pressure-stabilizing control scenes of various buildings.

The application is specifically a railway dynamic environment multi-source data fusion intelligent operation and maintenance management method and system, relating to the technical field of railway machine room power environment monitoring, comprising: a multi-source data acquisition preprocessing module; a heterogeneous data space-time alignment module; a multi-dimensional feature conflict resolution module; an operation state evaluation and early warning module; and an intelligent linkage execution management and control module.In the application, the adaptive noise reduction method based on singular value decomposition can filter out various random noises and interference, and at the same time, data completion is carried out in a high-order interpolation mode, thereby guaranteeing the integrity and continuity of the time sequence; a three-dimensional space distance matrix considering the influence of environmental factors is constructed, reflecting the physical space relationship between different sensors, and combining the cubic spline upsampling and cross-correlation phase compensation technology, the alignment of multi-source heterogeneous data in the time and space dimensions is realized.

The utility model provides a resistance walker which comprises a frame, a rear axle, a rear wheel resistance mechanism and a folding mechanism, and the frame is provided with a front end and a rear end which are oppositely arranged; the rear axle is mounted at the bottom of the rear end; the rear wheel resistance mechanism is installed on the rear axle and comprises a resistance part, a clamping pin and an assembly part. The resistance piece is provided with a mounting hole, the resistance piece is fixed on the rear wheel shaft, and a wave-shaped groove is formed in the outer side of the resistance piece; the bayonet lock is provided with a first end part and a second end part which correspond to each other, and the first end part is embedded into the wave-shaped groove; the assembly part penetrates through the rear wheel shaft and is fixed on the outer side of the resistance part, the assembly part is provided with a storage groove, and the second end part is embedded into the storage groove and can move along the storage groove; the folding mechanism is installed at the tail end of the frame and close to the rear axle, and the folding mechanism can be folded in the direction close to the frame. According to the resistance walker, the speed can be reduced, and higher safety is provided.

The invention discloses aero-engine fan impact vibration testing equipment and method, and belongs to the technical field of aero-engine testing. The equipment comprises a test box, the interior of which is a sealed cavity; the temperature adjusting unit is used for changing the temperature in the sealed cavity; the transmitting unit is used for transmitting compressed air shock waves to enter the sealed cavity through the transmitting tube and impact the rotating fan test piece; the angle adjusting unit is used for changing the inclination angle of the launching tube so as to change the impact angle; and the vibration response pickup unit is used for capturing the vibration state of the fan test piece after being impacted. By integrating the temperature, angle and speed adjusting functions, complex working conditions of different working temperatures and different impact angles and speeds can be simulated, and accurate measurement of the vibration response after the fan blade is impacted by the foreign matter is achieved. According to the invention, an efficient and accurate test platform is provided for evaluating the shock resistance and vibration characteristics of the composite material fan blade in a complex environment.

The invention provides an industrial fiber cloth tensile detection device and a detection method, and relates to the technical field of tensile detection. The detection table is of a long-strip-shaped structure, the digital display end is fixedly installed at one end of the detection table, and the traction motor is fixedly installed at the other end of the detection table. A rail groove is upwards formed in the detection table along the long edge, and a traction detection end is slidably mounted on one side, far away from the digital display end, in the rail groove; one end, close to the digital display end, of the detection table is fixedly provided with a traction seat, one side, close to the digital display end, of the traction detection end is also provided with a movable traction seat, the lower end of the movable traction seat is clamped with the upper end of the detection table in a sliding manner, and to-be-detected cloth is arranged between the two traction seats. The device realizes rapidness, automation and high reliability of cloth clamping. The upper feeding roller and the lower feeding roller in the cloth feeding assembly are matched with the guide supporting tongue, the cloth can be stably and smoothly guided to enter a preset position, the edge of the cloth is effectively prevented from being curled or deviated, and a good foundation is laid for follow-up uniform stress.

The utility model relates to the technical field of aluminum plate processing, and discloses an aluminum plate surface coating uniform spraying device which comprises a bottom plate, the top of the bottom plate is fixedly connected with a plurality of L-shaped frames, rotating shafts are rotatably connected between every two adjacent L-shaped frames, the outer walls of the sides, away from each other, of the rotating shafts are rotatably connected with a conveying belt, and the conveying belt is fixedly connected with the bottom plate. A first supporting block is fixedly connected to the position, close to the edge, of the left side of the top of the bottom plate, a first motor is fixedly connected to the top of the first supporting block, the output end of the first motor is rotationally connected with the front side of the left rotating shaft, and a U-shaped frame is fixedly connected to the left side of the top of the bottom plate. According to the aluminum plate spraying device, transmission of the conveying belt is driven by the first motor, so that an aluminum plate can be conveyed at a constant speed, it is guaranteed that the position and the speed of the aluminum plate in the whole spraying process are controllable, the uniformity of coating is guaranteed through the stirrer, blocking is prevented, and meanwhile the situation that the local spraying effect is poor and the coating is wasted due to uneven components is avoided.

The utility model discloses continuous dosing equipment capable of automatically quantifying, which belongs to the technical field of dosing equipment and comprises an electronic scale, the top of the electronic scale is distributed in a rectangular shape and is fixedly connected with four stand columns, a medicine bin is fixedly connected above the stand columns, a spiral blanking rod is rotatably connected in the medicine bin, and the spiral blanking rod is fixedly connected with the top of the electronic scale. The top of the medicine bin is fixedly connected with a rotating motor used for driving the spiral discharging rod to rotate, a feeding port is formed in the top of the medicine bin, the bottom of the medicine bin fixedly communicates with a discharging connector, the lower end of the discharging connector is transversely and fixedly connected with a blowing pipe, and the top of the electronic scale is fixedly connected with a fan. According to the chemical feeding device, chemical feeding has continuity and stability, the chemical feeding amount and the chemical feeding speed are controllable, high automation is achieved, the chemical feeding efficiency can be improved, and the labor cost of chemical feeding is reduced.

The application provides a strip steel annealing temperature control method and device, relates to the field of cold-rolled strip steel processing, and comprises the following steps: determining whether the running speed of the strip steel needs to be adjusted according to the time of the strip steel weld from a detection point to the entrance of a heating furnace; if yes, determining the to-be-adjusted running speed according to the length of the heating furnace, the current running speed and the current strip steel temperature; if no, determining whether the temperature of the heating furnace needs to be adjusted according to the thickness of the current strip steel and the thickness of the next strip steel; if yes, determining the heating furnace temperature adjustment amount according to the current heating furnace temperature corresponding to the thickness of the current strip steel and the to-be-adjusted heating furnace temperature corresponding to the thickness of the next strip steel; if no, determining whether the preset yield index is met according to the thickness of the next strip steel and the current running speed; and if no, increasing the current running speed. The application can improve the control precision and control speed in the strip steel production process, and realizes the transition control of the dynamic specification change of the plate temperature in the continuous annealing process.