30results about How to "Reduce the number of impacts" patented technology

The plate forming process and apparatus belongs to the field of laser processing technology. The present invention has CO2 laser for pre-heating plate, infrared thermometer for measuring and controlling the plate heating temperature, neodymium glass laser for providing powerful short laser pulse to induce the generation of laser shock wave as the forming force source in processing plate and plate deformation measuring feedback device. The present invention is superior to laser thermal stress forming process, which has inferior formed surface quality, and laser shock forming process, which has small deformation amount, and can form plate directly in relatively great deformation amount, relatively high size precision and relatively high surface quality.

The embodiment of the invention discloses a method and device for preventing link switching in networking, network equipment and a storage medium. The method comprises the following steps: when it ismonitored that a first ring port is recovered from a fault state to a normal state, configuring a port overhead value of the first ring port; operating the spanning tree protocol, and determining thatthe path overhead value from the first ring port to the root network bridge is greater than the root path overhead value from the second ring port to the root network bridge according to the port overhead value of the first ring port; configuring the port state of the first ring port to be a blocking state, and configuring the port state of the second ring port to be a forwarding state, wherein when the first ring port is in a fault state, the port state of the first ring port is a blocking state, and the port state of the second ring port is a forwarding state. The embodiments of the presentinvention can prevent back-switching of a forwarding link.

The invention provides a design method of a synchronous motion transmission error curve and a spiral bevel gear using the transmission error curve. The synchronous motion transmission error curve of the invention has two tooth changing points, which means that the number of tooth changing impact is small; the slope of adjacent transmission error curves is very close to each other at the point of gear change, which means that the angular velocity of gear change is almost the same. The engaging-in and engaging-out points are close to the inflection point of the transmission error curve, and thesecond derivative is zero, which means that the inertial dynamic load is almost zero when the gear is changed. The synchronous motion of the adjacent transmission error curve between the engaging-in and engaging-out points means that the non-uniform coefficient of load distribution between teeth is minimized. The above characteristics will greatly reduce the load on the teeth and vibration and impact caused by gear change, improve the load distribution between the teeth, and further improve the transmission performance of spiral bevel gears.

The invention discloses an intelligent ash removal control method of a bag type dust removing device. According to the method, an ash removal procedure, dust removing device outlet discharge and overall dust removing device resistance are associated; a pressure difference transmitter is arranged to monitor the pressure difference balance condition of a bag chamber, such that the pressure difference of a bag type dust removing device is stable and small in fluctuation, the times of impacting on the filtering bag by compressed air are reduced, and the service life of the filtering bag is substantially prolonged; and according to the concentration of the dust real-timely collected at the air outlet, the upper and lower limit values of the pressure difference and the interval ash removal timeare adjusted so as to avoid the excessive ash removal action, protect the dust layer on the surface of the filtering bag, reduce the escape of ultrafine dust and the system energy consumption, prolongthe service life of the filtering bag, reduce the emission caused by ash removal to the maximum extent, and achieve the ultralow-concentration dust emission at the outlet.

The invention provides a gray code based cam structure and a driver controller. The cam structure comprises four layers of cam and is characterized in that central through holes of the four layers of cam are coaxial, the outer rim of each layer of cam comprises at least one bulge which is used for pushing a contact of a high-speed speed so as to enable the high-speed switch to be switched on, and the bulges of the first layer of cam are located at arcs corresponding to parts, which are from 22.5 degrees to 67.5 degrees, from 112.5 degrees to 157.5 degrees, from 202.5 degrees to 247.5 degrees, and from 292.5 degrees to 337.5 degrees, of the outer rim; the bulges of the second layer of cam are located at arcs corresponding to parts, which are from 45 degrees to 135 degrees, and from 225 degrees to 315 degrees, of the outer rim; the bulge of the third layer of cam is located at an arc corresponding to a part, which is from 90 degrees to 270 degrees, of the outer rim; the bulge of the fourth layer of cam is located at an arc corresponding to a part, which is from 180 degrees to 360 degrees, of the outer rim; and 0 degree references of the four layers of cam are the same. According to the cam structure and the driver controller provided by the invention, the abrasion of the switch and the cam structure can be reduced effectively, and driving is ensured to be stable and safe.

The invention discloses a damping and damper selection method for reducing wheel tread failures in rail transit. A positive non-linear damper is selected, wherein the change rate of the absolute value of damping force F of the positive non-linear damper to the vibration velocity absolute value V is a constant or a progressive increase coefficient; when a damping object is subjected to positive or negative damping relative to the polarity of the vibration velocity V, the polarity of the generated damping force F is always opposite to the polarity of the vibration velocity V. The damping and damper selection method has the advantages that persistent wheel vibration and persistent wheeltrack impact caused and induced by accidental wheeltrack impact can be reduced effectively, vibration amplitude and impact frequency of wheeltrack resonance can be reduced, and accordingly, wheel damage caused by accidental impact is inhibited effectively; particularly, damage 'duplication' caused by induced continuous impact is inhibited, and occurrence and quick development of polygon out-of-round is also inhibited; a solution is provided for solving blindness in current damper selection and damping methods as well as solving the wheel tread failures and the polygon out-of-round which occur frequently in China's rail transit.

The invention relates to a marine photovoltaic platform and an operating method of the marine photovoltaic platform. The marine photovoltaic platform comprises a base body and a plurality of hinges arranged around the base body, wherein the base body comprises a bowl-shaped water collection part, a cylindrical floating part and a cone-shaped gravity part for stabilizing the gravity and adjusting the buoyancy force of the platform from top to bottom; one end of each of the hinges is articulated with the periphery of the water collection part, and the upper surface of each hinge is provided with a plurality of photovoltaic panels; and the hinges can be enclosed with the water collection part after rotating along articulated points to form a sealed cavity. According to the marine photovoltaic platform and the operating method of the marine photovoltaic platform, marine photovoltaic power generation equipment is used for carrying out sealing to be isolated with the outside in the period of time that solar power cannot be utilized for power generation at night, so that the time that the photovoltaic power generation equipment is eroded is reduced; and due to the fact that the night approximately accounts for half of the whole day, the time that the photovoltaic power generation equipment is eroded can be effectively reduced by half, so that the service life of the photovoltaic power generation equipment is greatly prolonged.

The invention relates to a cleaning device for a cutting base. The cleaning device comprises a moving block, a connecting rod, a driving mechanism and a cleaning mechanism, the driving mechanism comprises a connecting plate, a transverse plate, a moving rod, a sliding block and a first spring, and the cleaning mechanism comprises a piston cylinder, a second spring, a pulling rod, a blade and a pulling assembly. According to the cleaning device for the cutting base, the cleaning mechanism and the driving mechanism are matched to clean a main body, the blade impacts a cut product through the restoring force of a second spring, the blade better abuts against the main body through the restoring force of a torsional spring, and therefore the cleaning effect is improved, the impact force of the blade is improved through a third spring, so that the impact frequency is reduced, the working efficiency is improved, the labor intensity of workers is reduced, meanwhile, a movable block is limited through a positioning mechanism, the movable block can better move on the main body, meanwhile, the cleaned main body is swept, and the use practicability is improved.

The invention discloses an electric tool which comprises a casing, a motor, an output shaft and a clamping head, wherein the motor is contained in the casing; the output shaft is driven by the motor to rotate; and the clamping head is connected with the output shaft and a cutting tool. The electric tool is characterized in that the casing is provided with first impact teeth; the output shaft is provided with an impact device which can be axially moved to disconnect or connect with the clamping head; and the impact device is provided with second impact teeth which are matched with the first impact teeth of the casing. When the impact device and the clamping head are connected to rotate, the first impact teeth on the casing and the second impact teeth on the impact device form impact. As the automatic impact structure is adopted, the electric tool effectively utilizes the driving force of the motor, and applies the impact force on the clamping head in the clamping or loosening direction, the clamping head automatically loosens or clamps, and then the cutting tool can be conveniently and quickly disassembled or assembled. The invention has the advantages of simple structure, low cost and convenient use.

The invention discloses a counter balance leveled by using communicating vessels, wherein the communicating vessels are arranged at the two ends of a balance lever, the balance is leveled by using the flowing of liquid in the communicating vessels, and then the flowing of the liquid is blocked. Therefore, the leveling time is shortened, and the service life of the balance can be prolonged due to low manual impact frequency and low strength.

The invention discloses an electric router. The electric router comprises a casing, an electric motor, an output shaft, a grip and a spin device, wherein the electric motor is arranged in the casing; the output shaft is driven by the electric motor to rotate; the grip is sleeved on the output shaft, is used to connect the output shaft with a cutter and can perform axial movement relative to the output shaft; and the spin device is connected with the casing in a fitting manner, is fixedly connected with the grip in a rotating manner and can perform axial movement relative to the output shaft when the output shaft rotates. The electric router of the invention adopts the spin device and utilizes the rotation of the output shaft to ensure the grip to perform axial movement for loosing or clamping, thus the cutter can be convenient and fast to dismount; and the electric router of the invention is characterized by simple structure, low cost and convenient operation.