327results about How to "Stable speed" patented technology

The invention provides a robot collaborative sewing method and system based on speed look-ahead control. The system comprises an image detection module, a pressure detection module, sewing equipment, a controller and a mechanical arm. The image detection module acquires image information of the fabric in real time and transmits the image information to the controller; the controller processes the image information to generate the position of a pressing point at the tail end and a motion path, introduces speed look-ahead control, optimizes a speed extreme value according to the motion path, completes speed planning of the whole track, and interpolates the planned track to obtain an interpolated result; the controller sends expected force to the pressure detection module, and the pressure detection module outputs the pressing height; the mechanical arm presses the height to execute the action to the fabric based on the interpolation result; the controller sends a control signal to the sewing equipment, and the sewing equipment carries out cloth feeding and sewing; the speed of the sewing equipment is matched with that of the mechanical arm, and cooperative sewing is carried out.

The invention discloses energy-saving high-pressure cleaning equipment for square and rectangular pipes, and relates to the technical field of high-pressure cleaning, the energy-saving high-pressure cleaning equipment comprises a main body frame, a cleaning module is mounted above the main body frame, a rotational flow collaborative cleaning mechanism is arranged in the cleaning module, and the rotational flow collaborative cleaning mechanism is used for changing a water flow mode to ensure internal and external water flow collaborative high-pressure cleaning; the introduced air conveying bin only surrounds the outmost periphery of the nozzle, air flow flows along spiral water flow on the outmost periphery of the nozzle after being discharged in a vertical flowing mode, through the design, the peripheral water flow obtains additional momentum under the action of wind power, and then the momentum is transmitted to the internal water flow through collision among fluid molecules; according to the process, redistribution of energy is achieved, energy of internal water flow is supplemented, and water flow impact force borne by the peripheral square and rectangular pipes and the internal square and rectangular pipes is more balanced through the effect of wind power on the peripheral water flow and transmission of the energy to the internal water flow.

The invention relates to a virtual reality technology-based humanoid robot remote control system and method, the system comprises a VR device and a humanoid robot, and the VR device comprises a head-mounted device, a hand device, a visual information sampling unit, a hand device sampling unit and a visual information imaging unit; the humanoid robot comprises a robot system communication unit, a robot system planning control unit, a visual sensor and a joint motor execution unit. The technical problems that existing robot control mainly depends on field teaching operation of workers, so that the mechanical arm control threshold is high, and the field limitation is large are solved, and the beneficial effects of being low in threshold, high in interactivity, low in delay, high in safety, high in flexibility and the like are achieved.

The invention belongs to the field of hydraulic engineering, and relates to an arch dam cable crane real-time obstacle avoidance trajectory smooth transition planning method, which comprises the following steps: 1) initializing working initialization parameters of an arch dam cable crane; 2) constructing a two-dimensional grid environment map; 3) performing simplest geometric obstacle avoidance path planning based on the two-dimensional grid environment map to obtain path nodes; 4) optimizing the simplest geometric obstacle avoidance path plan to generate a trajectory cluster; 5) screening the trajectory clusters to form a preferred trajectory; 6) executing the optimal trajectory, and updating the two-dimensional grid environment map in combination with the collision risk in the event; and 7) in combination with the updated two-dimensional grid environment map, repeatedly executing the step 3), and constructing a real-time obstacle avoidance track smooth curve. The invention provides the smooth transition planning method for the real-time obstacle avoidance track of the arch dam cable crane, which can provide theoretical research and engineering application support for dynamic simulation and beforehand rehearsal of a cable crane hoisting operation process, real-time obstacle avoidance track result output and safe and efficient construction guidance of a construction process.

The invention relates to the technical field of motor control technologies, and particularly provides a permanent magnet synchronous motor back electromotive force reconstruction and position speed extraction method, which comprises the following steps of: establishing a mathematical dynamic model of a permanent magnet synchronous motor under a static coordinate system, and designing an improved super-spiral observer according to the model, the reconstruction precision and the convergence speed of the back electromotive force are enhanced; and standardizing the reconstructed back electromotive force, and extracting the position and speed of the permanent magnet synchronous motor rotor through an integral compensation phase-locked loop. According to the invention, by improving the existing super-spiral observer and the phase-locked loop, the convergence speed and the position estimation precision of the system are obviously improved.

The invention relates to the technical field of engines, and provides an opposed engine which comprises a crankshaft, a power unit and a torque eliminating device, the crankshaft rotates around a third direction, the power unit comprises a Scotch yoke transmission mechanism and two air cylinders, and the Scotch yoke transmission mechanism comprises a power sliding block, a power connecting rod and two power pistons. The power sliding block is rotatably installed on the crank throw, the power sliding block can be installed on the power connecting rod in a sliding mode in the second direction, the two power pistons are installed at the two ends of the power connecting rod in the first direction respectively, and each power piston can be arranged on the corresponding air cylinder in a sliding mode in the first direction; a moment elimination mass block of the moment elimination device is driven by a crankshaft to do reciprocating rectilinear motion in the first direction, and the direction of inertia moment generated by the moment elimination mass block and acting on an engine body is opposite to that of inertia moment generated by all Scotch yoke transmission mechanisms and acting on the engine body. The inertia moment of the Scotch yoke transmission mechanism is effectively counteracted or reduced, and the NVH performance is remarkably improved.

The invention discloses a workpiece trajectory planning method and device and a storage medium, and belongs to the technical field of workpiece measurement. Through spline interpolation and application of a Frenet coordinate system, the method can guarantee the stable speed, achieves the optimal trajectory in time, improves the measurement efficiency and precision of the curved surface of a complex workpiece, solves the problems of many measurement points and long time consumption in a conventional method, effectively processes singular points and curvature changes on the curved surface, and improves the measurement precision of the curved surface of the complex workpiece. Therefore, the measurement precision of the scanning measuring head is higher, and the operation speed is faster. Finally, a high-precision measurement task can be completed in a short time.

The invention belongs to the technical field of robot automatic force control polishing of optical elements, and particularly discloses a robot polishing force speed planning method and system considering the surface shape precision and the machining efficiency of the optical elements. The method comprises the steps that based on the Preston theory, a material removal model of the small grinding head polishing device is established; acquiring surface shape data of a detection point of the optical element, and planning a polishing path of the optical element in an off-line manner; discrete cutter points are fitted, a parameterized position curve is obtained, points are taken uniformly to obtain surface shape optimization resident points, and a unit material removal matrix is established in combination with a material removal model; and constructing a first-step optimization model and a second-step optimization model, and obtaining the optimized contact force and feed speed. According to the invention, optimization of contact force and feeding speed during optical element processing can be realized, and high-quality optical elements can be obtained with high efficiency.

The invention discloses a pipeline butt joint welding seam surplus height grinding device and method, the grinding device comprises an electric control module, a vehicle body module and a milling and grinding device module, and the appearance of a main body of the grinding device is of a cuboid trolley structure with an n-shaped handheld handle on the upper portion; the vehicle body module comprises a vehicle body shell, a lifting hand wheel hole and a metal magnetic wheel; the electric control module is located on the upper portion of the vehicle body module and provides power for the grinding device and controls electrical equipment. The milling and grinding device module is located in a vehicle body shell of the vehicle body module and comprises a lifting hand wheel, a speed reducer, a motor, a frame body and a spiral milling cutter. The grinding device makes contact with a to-be-treated pipeline through the metal magnetic wheel, the position of the milling and grinding device module is controlled by rotating the lifting hand wheel, then the carry distance of the spiral milling cutter is controlled, and the purpose of milling and grinding the weld reinforcement is achieved. The device is compact in structure, convenient to carry, simple in structure, low in use and maintenance cost and easy to operate, and the grinding speed and quality are improved.

The invention discloses a conveying device for a hollow glass production line, and relates to the technical field of hollow glass production line conveying, the conveying device comprises a fixing plate, the top of the fixing plate is rotatably connected with a connecting rod, one end, away from the fixing plate, of the connecting rod is rotatably connected with a plurality of square plates, and the plurality of square plates are uniformly arranged on the outer side of a frame body; the two ends of the connecting rod are rotationally connected with the staggered fixing plate and the square plate, the top of the connecting rod is rotationally connected with a middle rod, the middle of the connecting rod is rotationally connected with a rotating rod, the side, close to the rotating rod, of the fixing plate is fixedly connected with a middle plate, and the inside of the outer side of the fixing plate is rotationally connected with a guide roller. According to the conveying device for the hollow glass production line, the distance between the guide rollers can be adjusted according to the size of fixed glass, glass supporting and positioning of equipment in the conveying process are improved, the conveying efficiency of the glass can be improved, shaking and deviation of the glass in the conveying process can be reduced, and therefore the production quality is improved.

The invention, which relates to the technical field of unmanned driving, discloses an unmanned driving control system comprising the following components: an environment sensing layer, a positioning mapping layer, a path planning layer, a decision control layer and a bottom execution layer. According to the invention, the improved YOLOv7-tiny target detection algorithm and the DeepSort target tracking algorithm are adopted, and laser radar point cloud processing is combined, so that accurate identification and tracking of track markers such as cone buckets are realized, the real-time performance and accuracy of target detection are improved, the robustness of environmental perception is further enhanced through a data fusion technology, and the method has the advantages of being high in practicability and easy to popularize. Meanwhile, on the path planning and decision control level, a graph search tree and a B spline curve are used for optimizing the path, and a Stanley / MPC hybrid transverse control algorithm is combined, so that the racing car can still keep stable driving track and speed in high-speed driving and complex racing track environments, and the stability and accuracy of an unmanned driving system are remarkably improved.

The invention belongs to the technical field of varnished wire detection, and particularly relates to a detection device for an inductance element varnished wire, which comprises a base, a winding traction mechanism, a guide diameter measuring mechanism, a pressurization air supply mechanism, a wire diameter feedback regulation and control mechanism, a detection angular velocity control mechanism, a detection result visual display mechanism and a PLC (Programmable Logic Controller). According to the invention, continuous and relatively stable tensile force is provided through constant-speed rotation of the winding drum, the increase of the tensile force is more linear, additional damage to the enameled wire caused by sudden impact force is avoided, the test result can more accurately reflect the tensile property of the enameled wire in actual use, and the test can be carried out in a relatively compact space, so that the test efficiency is improved. According to the device, the requirement for a site is relatively low, the angular speed of the winding drum and the detection height of the winding drum in the detection process can be automatically adjusted, and a final test value in a tension test can be displayed more visually and clearly.

The utility model discloses a multi-gear constant-speed regulating circuit for a low-voltage brushless motor of an electric hair cutter. The multi-gear constant-speed regulating circuit comprises a main control circuit, a power supply circuit, a voltage detection circuit, an inverter circuit and a back electromotive force detection circuit, the output end of the power supply circuit is connected with the voltage detection circuit, the output end of the voltage detection circuit is connected with the master control circuit, the inverter circuit is connected with the output end of the master control circuit, the output end of the inverter circuit is connected with the driving device, the driving device is connected with the back electromotive force detection circuit, and the output end of the back electromotive force detection circuit is connected with the master control circuit. By the adoption of the design, the square wave output duty ratio is adjusted according to different input power supply voltages, the multi-gear constant speed function is achieved, different rotating speeds are adjusted according to different use requirements, the use smoothness of a product is improved, the rotating speed is stable, the working efficiency and the use experience are improved, the heating value of the product is reduced, the service life is prolonged, and the structure is simple and convenient to use. The cost is low, and the market reference prospect is relatively great.

The utility model discloses a six-arm type inspection robot capable of realizing single-line and double-line switching inspection, which comprises a robot body, and three primary line changing wheel discs are sequentially arranged on the robot body from front to back at intervals; two front movement mechanisms capable of independently rotating are arranged on the first-stage wire changing wheel disc at the front end; two self-power-taking mechanisms capable of independently rotating are arranged on the middle first-stage wire changing wheel disc; two rear movement mechanisms capable of independently rotating are arranged on the first-stage wire changing wheel disc at the rear end; the front movement mechanism, the self-power-taking mechanism and the rear movement mechanism are all connected to the overhead line in a suspended mode, and the front movement mechanism, the self-power-taking mechanism and the rear movement mechanism which are horizontally arranged on the same side are connected to the same overhead line in a suspended mode and can rotate synchronously when the overhead line is switched. According to the utility model, on-line real-time switching can be carried out, line obstacle crossing inspection of a single line and a part of split conductors can be completed, and the requirement of an inspection robot on the number of specific lines can be reduced.

The invention discloses a multi-angle numerical control machining device, and relates to the technical field of numerical control machining, the multi-angle numerical control machining device comprises a numerical control module, a driving module is mounted above the numerical control module, a laser module is mounted in the driving module, and an efficient punching heat dissipation mechanism is arranged on the side wall of the driving module; the efficient punching heat dissipation mechanism conducts continuous punching treatment on a machining material in a periodic sine wave motion mode, the sine wave motion mode ensures that the speed and acceleration changes of a laser nozzle in the whole punching process are smooth and do not suddenly change, and vibration and impact in movement of an internal structure of the laser nozzle are reduced; therefore, the stability of equipment punching treatment movement is improved, precise components in the laser head can be protected against damage of additional stress, the service life of the equipment is prolonged, the controllability and precision of the machining process are remarkably improved, and the machining efficiency is improved. And the problems of inconsistent aperture size, increased surface roughness and the like caused by discontinuous movement are effectively avoided.

The invention relates to an automatic running control system and method for a trolley, belongs to the technical field of automatic control, is used for controlling the trolley to run automatically on a set track, and comprises a sensor module, a main control module, a speed control module and a direction control module. The sensor module is used for identifying a set track and acquiring the speed and the driving direction of the trolley in real time; the main control module is used for generating a first driving control instruction and a second driving control instruction when the speed and the driving direction of the trolley are not the target speed and the target direction; the speed control module is used for responding to the first driving control instruction and adjusting the speed of the trolley to the target speed; and the direction control module is used for calibrating the gyroscope, after a Kalman filter is adopted to predict calibrated data in real time, a second driving control instruction is responded, the driving direction of the trolley is adjusted to the target direction based on a direction ring-motor ring cascade PID, and the control precision and stability are improved.

The utility model discloses a turnover panel sorter workbin pushing frame mechanism, automatic confluence mechanism, sorting line, including workbin, workbin support plate, base support, drive unit and pushing frame plate, workbin is placed on the workbin support plate, workbin support plate is installed on the top of base support, drive unit is arranged below one end of workbin support plate, and the other end of workbin support plate is installed on the base support. The frame pushing plate is arranged on the material box supporting plate, one end of the frame pushing plate extends downwards to be connected with the driving unit, the frame pushing plate is driven by the driving unit to reciprocate in the lengthwise direction of the material box supporting plate, the material boxes are pushed by the frame pushing plate to move, and the confluence conveying line transversely arranged on the frame pushing mechanism is used for conveying the material boxes pushed by the frame pushing mechanism. The plate turnover machine body comprises a sorting trolley tray used for throwing materials into the material box, and through the structural design, the problems that according to an existing plate turnover sorting machine, the efficiency is affected and the labor cost is increased due to the fact that the full-material containers and the materials still need to be manually carried to a designated operation area to be packaged and sealed are solved.

This invention provides a cup assembly for a food processor, including a cup body, a cup lid, and a processing component disposed within the cup body. It also includes a gearbox, which comprises a movably disposed clutch output shaft. When the clutch output shaft moves to a first position, it drives the processing component to output a first rotational speed; when the clutch output shaft moves to a second position, it drives the processing component to output a second rotational speed. The cup lid is installed in place, maintaining the clutch output shaft in either the first or second position. Furthermore, a food processor with the aforementioned cup assembly is provided. In the first position, the clutch output shaft outputs a first rotational speed to adapt to multi-functional cooking; in the second position, it outputs a second rotational speed to adapt to another multi-functional cooking method requiring a different speed. By changing the position of the clutch output shaft, the processing component can be replaced and the rotational speed can be automatically switched. Moreover, the output speed range is wide and the torque is high, avoiding stalling caused by high processing resistance.

The invention relates to an automatic gilding press which comprises a gilding press body, an unwinding mechanism, a winding mechanism, a rotating speed adjusting mechanism, a rolling diameter measuring mechanism, a gilding mechanism and a controller. The rotating speed adjusting mechanism comprises a supporting plate, a first motor and an adjusting assembly. The adjusting assembly is used for adjusting the rotating speed of the winding mechanism and the rotating speed of the unwinding mechanism. The adjusting assembly comprises a driving chain wheel in transmission connection with the first motor, a plurality of adjusting chain wheels with different diameters, a chain in meshing connection with the driving chain wheel and the adjusting chain wheels and a derailleur used for changing the position of the chain, and the derailleur is electrically connected with the controller; the adjusting chain wheel is used for driving the winding mechanism and the unwinding mechanism to rotate, the winding diameter measuring mechanism is in signal connection with the controller, and the controller drives the derailleur to adjust the position of the chain. By adjusting the rotating speed of the unwinding mechanism and the rotating speed of the winding mechanism, the difference between the unwinding speed and the winding speed of the alumite is reduced, and therefore the tension borne by the alumite is reduced, and the gold stamping machining quality is improved.

The invention relates to the technical field of new energy power generation, and discloses an industrial new energy power generation device which comprises a power generator, a supporting rod is installed on the power generator, a flow guide cylinder is fixedly installed at the upper end of the supporting rod, an annular photovoltaic panel is fixedly installed at the upper end of the flow guide cylinder, a rotating shaft is rotatably installed in the flow guide cylinder, and a plurality of fan blades are fixedly installed on the rotating shaft. According to the new energy power generation device, wind power is used for driving the wind measuring plate to deflect, the sleeve drives the push strip to move upwards, the flexible strip is jacked up, the roller shaft rotates, thrust borne by the fan blades corresponds to the rotating distance of the roller shaft, meanwhile, the roller shaft drives the reel to wind the connecting rope, and therefore the connecting rope can be driven to rotate. The wedge-shaped plate moves upwards, the wedge-shaped plate is matched with the wedge-shaped strip, the wedge-shaped strip drives the wind shield to adjust the size of the air inlet of the flow guide groove, thrust borne by the fan blades can be in a stable state as much as possible, and the power generation efficiency and stability of the wind power generation device are improved.

The utility model provides a modified star-shaped cinder valve. The modified star-shaped cinder valve comprises a shell, an impeller, a driving motor, a baffle assembly and a plugging assembly. The impeller is arranged in an inner cavity of the shell and comprises a rotating shaft and a plurality of blades, the driving motor is in transmission connection with the impeller, the baffle assembly comprises two baffles fixedly connected in a feeding port of the shell, an inlet is formed between the two baffles, and the plugging assembly comprises a sealing plate connected between the outer ends of every two adjacent blades. The two partition plates are connected to the outer side of each sealing plate, a material receiving groove is formed between the two partition plates, and the material receiving grooves sequentially pass through the position below the inlet along with rotation of the impeller; the baffle assembly can reduce entering of materials, the blocking assembly can reduce the conveying amount of the materials, and therefore the requirement for the small conveying amount of the materials is met, and the motor frequency does not need to be reduced.

The invention relates to the field of internet, and discloses a motor which comprises at least one first magnet and at least one second magnet, the first magnet and the second magnet can rotate relative to each other, and at least one magnetic pole of the first magnet is wrapped by a wire; the wrapping direction of the wire is different from the relative rotation direction of the first magnet and the second magnet, and the heteropolar distance between the magnetic pole end, wrapped by the wire, of the first magnet and the second magnet is close to the homopolar distance. The motor has the advantages of stable rotating speed, high efficiency, low cost, less electromagnetic interference, low noise and long service life.

The utility model provides a manual wrapping film winding device, which relates to the technical field of winding devices and comprises a bottom plate, a support plate A and a support plate B are fixedly mounted at the top end of the bottom plate, a motor is fixedly mounted on the surface of the support plate A, a two-way threaded rod is mounted at the output end of the motor, a clamping plate is sleeved on the surface of the two-way threaded rod, and the clamping plate is fixedly mounted on the bottom plate. A rotating roller penetrates through the end, away from the two-way threaded rod, of the clamping plate, and a roller bearing wheel is fixedly installed at the end, away from the bottom plate, of the supporting plate A. According to the winding device, the bidirectional threaded rod, the motor and the clamping plates are arranged, the motor B is started, the bidirectional threaded rod rotates to drive the two clamping plates to move in the opposite direction or the opposite direction, a winding film needing to be wound is limited by adjusting the distance between the clamping plates, and the winding film is wound through limiting control. The winding film can keep stable tension and speed in the winding process, the problems of material breakage and the like are avoided, and stable winding of the winding film is guaranteed.

The present invention relates to the technical field of steel cord processing, and specifically provides a pay-off frame device for steel cord unrolling, comprising a mounting bracket; a pay-off drum, which is mounted on the mounting bracket and used for steel cord unrolling, and the pay-off drum is coaxially connected to a driving wheel; a magnetic tensioner, which is mounted on the mounting bracket and coaxially connected to a driven wheel; and a conveyor belt, which is sleeved on the outer wall of the driving wheel and the driven wheel. When the speed of the pay-off drum changes abnormally, the pressure applied to the tensioning wheel by the conveyor belt will change, and the pressure sensor senses the pressure increase and transmits a signal to the controller, and the controller controls the magnetic tensioner to convert the torque change to increase the damping force, control the speed of the driven wheel to slow down, and then control the speed of the driving wheel to slow down through the conveyor belt. Because the driving wheel is coaxially connected to the pay-off drum, the speed of the pay-off drum can be adjusted according to the pay-off tension, so that the speed of the pay-off drum tends to be stable.

The invention discloses an angle deflection structure with tooth poles and a deflection mirror device thereof, the angle deflection structure comprises a rotor assembly and a stator assembly, the rotor assembly is composed of a rotating shaft and at least two permanent magnets with adjacent staggered poles, and the stator assembly comprises a stator ring, two first tooth poles and two second tooth poles. The first tooth poles and the second tooth poles are evenly arranged in the stator ring at intervals in a pairwise opposite mode, the two ends of the oppositely-arranged first tooth poles in the length direction are provided with insulating wire frames, and coil windings are wound around the insulating wire frames and suspended on the outer sides of the permanent magnets. On the basis of four poles, the first tooth poles and the second tooth poles are arranged outside the permanent magnets, so that magnetic field lines can be better gathered and guided, the influence of the tooth poles on the torque output smoothness of the rotating shaft can be reduced as much as possible, air gaps around the permanent magnets are reduced to about 0.3 mm, and the torque output smoothness of the rotating shaft is improved. Therefore, the same performance as that of the existing structure can be achieved by using a weaker magnet and fewer coils.

The present application relates to the technical field of vehicles, and specifically discloses a control method and device for a hydraulic retarder system, a vehicle and a storage medium, wherein the control method for the hydraulic retarder system acquires a control instruction of the hydraulic retarder; when the control instruction is a starting instruction, a synchronizer is combined with an enablement; the rotational speed V11 of a rotor is acquired; the rotational speed V12 of a driving gear is acquired; a first rotational speed difference rate is calculated, the first rotational speed difference rate=(V12-V11) / V12; and the hydraulic retarder is started when the first rotational speed difference rate is not more than a first set value. The rotational speed of the rotor and the rotational speed of the driving gear are both stable when the hydraulic retarder is started, and normal operation can be maintained, thereby avoiding power jerk and improving the user driving experience.

The invention belongs to the technical field of aluminum alloy solid phase welding, and particularly relates to an aluminum alloy thick plate single-shaft-shoulder stirring head and a manufacturing and welding method thereof. Comprising a clamping handle, a stirring needle and a shaft shoulder, and two annular inner grooves are formed in the bottom of the shaft shoulder around the center; the stirring needle is integrally conical, the cross section of the stirring needle is of a hexagonal structure, and the hexagonal structure is formed by alternately arranging planes and cambered surfaces; the side walls of the three cambered surfaces of the stirring needle are provided with conical threads, and the side walls of the three planes are smooth surfaces; an aluminum alloy plate with the thickness of 20 mm is adopted for welding, and the downward rolling speed, the rotating speed and the welding speed of a stirring head are determined; continuous and stable welding of the butt joint of the thick aluminum alloy plate with the thickness being 15 mm or above can be achieved; the problems that holes, flashes and burrs exist in welding seams of aluminum alloy thick plates are solved.

The present invention relates to an automatic cover-tie device and system for finished cigarette boxes, the device comprises a strap bracket, an unfolding mechanism for flipping the cover of the box cover, and a strapping mechanism for picking up the strap from the strap bracket and covering the strap on the side of the carton, wherein: the unfolding mechanism comprises four cover-tie modules for flipping the cover of each box cover; the strapping mechanism comprises four clamping modules for clamping the strap, a moving module for driving the clamping modules to transfer, and a stripping module for pulling the strap away from the clamping modules, and the straps clamped by each clamping module at the same time are in a rectangular ring shape that matches the carton cover area; the strap bracket comprises four vertical rods for pre-tensioning the annular strap to a rectangular ring shape, and the annular strap tensioned by the vertical rods is also in a rectangular ring shape that matches the carton cover area. It can automatically flip the carton cover and automatically perform the strapping operation, reduce manpower occupation, and reduce the restriction of the cigarette box cover-tie process on the operation speed of packing and supplying finished cigarettes.

The invention relates to the technical field of cosmetics, in particular to a preparation method of a hydrogen molecule mask containing a liquid organic hydrogen sustained-release material. The preparation method comprises the following steps: (1) preparing an oil phase; (2) preparing a water phase; and (3) preparing the hydrogen molecule mask. The invention has the following technical advantages: (1) a water-phase formula system can react with an oil phase at normal temperature and safely and stably generate hydrogen, the formula system is safe and harmless to skin, the problems of difficult reaction conditions (high temperature or strong alkali) and uncontrollable hydrogen desorption speed of hydrogen-containing silicone oil are solved, and the water-phase formula system has the advantage of high compatibility with skin; test data show that hydrogen production can be maintained for at least 4 hours, the solution hydrogen concentration reaches 300 ppb or above, and the formula system reacts at normal temperature, is gentle and stable in hydrogen desorption speed and good in effect. (2) the liquid organic hydrogen sustained-release material is applied to the mask product for the first time, and feasibility is provided for application of the organic hydrogen sustained-release material for external hydrogen medical cosmetology in the mask product.

The utility model discloses a gas engine camshaft. The wrap angle of a first cam peach ranges from 94 degrees to 124 degrees, the wrap angle of a second cam peach ranges from 150 degrees to 175 degrees, the valve opening angle of an air inlet cam ranges from 331 degrees to 353 degrees, the valve closing angle of the air inlet cam ranges from 527 degrees to 551 degrees, the valve opening angle of an exhaust cam ranges from 118 degrees to 130 degrees, and the valve closing angle of the exhaust cam ranges from 360 degrees to 375 degrees. The cam shaft of the diesel engine is transformed, new processes and new technologies are not added, parameters such as a wrap angle, a valve opening angle and a valve closing angle of a cam profile are reasonably designed, and the requirements of the cam shaft of the gas engine for intake and exhaust are met. Due to the fact that the cam shaft can be developed on the basis of a cam shaft blank of a diesel engine of the same type, the commonality of a gas engine and a diesel engine can be guaranteed, the manufacturing cost is almost not increased, and the high cost advantage and the high process advantage are achieved for batch production.