10results about How to "Simplified weight" patented technology

The invention relates to the technical field of chip mounting, in particular to a die bonder and a die bonding method. The die bonder comprises a track device, a feeding device, a gluing device, a mounting device, a chip supply device and a discharging device. The feeding device and the discharging device are arranged at the two ends of the track device in the length direction correspondingly. The gluing device is arranged at the end, close to the feeding device, of the side edge of the rail device. The mounting device is arranged at the end, close to the discharging device, of the side edge of the rail device, the mounting device and the gluing device are located on the same side of the rail device, and the mounting device comprises a visual positioning component and a mounting component which are independently arranged; and the chip supply device is arranged on the other side of the track device and corresponds to the mounting device. The die bonder provided by the invention is compact in structure, the moving distance of each link is reduced, and the mounting efficiency is improved.

The invention discloses a system and a method for measuring the weight center of gravity of an unmanned helicopter, belongs to the technical field of unmanned aerial vehicles, and is used for solving the problems of low measurement precision and limited measurement scene of the system for measuring the weight center of gravity of the unmanned helicopter. The measuring system comprises a weight measuring unit, a horizontal measuring unit, a lifting unit and a distance measuring unit. The weight measuring unit comprises four weight measuring assemblies; the horizontal measuring unit comprises a first bevel protractor and a second bevel protractor, the first bevel protractor and the second bevel protractor are located on a main shaft of the unmanned helicopter, the distance measuring unit comprises a horizontal laser instrument and a laser centering tool, the laser centering tool is fixed on the main shaft of the unmanned helicopter, and the laser centering tool comprises an inclined laser centering line. The center line of the laser pair and the center line of the spindle are coplanar. According to the measuring system and the measuring method, the position of the weight gravity center of the unmanned helicopter measured by a four-point weighing method in the horizontal direction can be improved, and testing of different helicopter types and different sites can be met.

The invention provides a method for accurately calculating the transmission efficiency of an aerospace electromechanical servo actuator, and relates to the field of servo actuators. The method for accurately calculating the transmission efficiency of the spaceflight electromechanical servo actuator comprises the following steps that S1, the spaceflight electromechanical servo actuator drives a ball screw to generate linear displacement mainly through a permanent magnet synchronous motor directly or by being connected with a reduction gearbox; and S2, the whole electromechanical servo actuator and the rocket engine jet pipe are fixed together through an upper supporting lug nut, an upper supporting lug bolt, a lower supporting lug nut and a lower supporting lug bolt. According to the electromechanical servo actuator, the structural design of the electromechanical servo actuator is optimized, the transmission efficiency of the actuator is accurate, the structure of the actuator can be designed more reasonably according to the accurate transmission efficiency, the weight of the actuator is further reduced, more theoretical bases are provided for design of the electromechanical servo actuator, and when a fault occurs, the electromechanical servo actuator can be effectively protected. And the accident reason can be found more accurately.

The invention discloses a split type washing machine. The washing machine comprises a base module and a cleaning module, a water inlet system, a drainage system and a driving system of the washing machine are integrated in the base module, and the cleaning module comprises an impeller and an impeller shaft; the water inlet system, the water outlet system and the driving system comprise a first water inlet, a first water outlet and a motor shaft which protrude out of the base module on the same side; the motor shaft is located at a middle shaft of the base module, and the first water inlet and the first water outlet are asymmetrically arranged on the base module relative to the motor shaft; the washing module is detachably installed on the base module, the bottom structure of the washing module is matched with the first water inlet, the first water outlet and the motor shaft which protrude out of the base module, and a user can take and place clothes by detaching the washing module through the split design of the washing module and the base module. The clothes processing convenience is enhanced, and the use experience of a user is improved.

The present invention relates to the technical field of transport vehicles, and proposes a screw-propelled general-purpose wetland transport vehicle, including a frame, an isolation plate arranged at the lower side of the frame, forming an installation space with the frame, the isolation plate having a through hole, an emergency stop member arranged to be lifted and lowered relative to the frame, the emergency stop member being located in the installation space, the emergency stop member being configured to have a lifting path passing through the through hole, a buoyancy plate arranged to be lifted and lowered relative to the isolation plate, and being located below the isolation plate, the buoyancy plate having an emergency stop perforation, the emergency stop member being configured to pass through the emergency stop perforation after being lowered, a screw propulsion roller being rotatably arranged below the isolation plate, a telescopic push member being arranged on one side of the isolation plate, a connecting frame being arranged on the frame, and being located at the lower side of the frame, the connecting frame and the telescopic push member being respectively arranged on both sides of the screw propulsion roller, and the telescopic push member being extended to push the sludge in front of the transport vehicle. Through the above technical scheme, the problem of the inconvenience of starting and stopping the screw-propelled wetland transport vehicle in the prior art after emergency stop is solved.

The utility model relates to a gas distribution system of an internal combustion engine. The gas distribution system comprises an electric control valve (1), a Hall sensor (2) and a controller (3), the electric control valves (1) are installed at an air inlet and an air outlet of an internal combustion engine air cylinder (4), replace traditional air valves and are controlled by the controller (3) to be opened or closed. The electric control valve (1) comprises a valve control motor (9), a valve body (10), a valve core (11), a reciprocating lead screw (12) and an air vent (13); the Hall sensor (2) monitors the position of a piston (5) of the internal combustion engine; the controller (3) is connected to the electric control valve (1) and the Hall sensor (2) and used for controlling opening or closing of the electric control valve (1) and monitoring the position of the internal combustion engine piston (5). Compared with the prior art, the utility model has the advantages of simple and light structure, high reliability, no risk of collision between the piston of the traditional gas distribution system and the valve, no need of replacing the timing chain / belt of the traditional gas distribution system, and the like.

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to a portable nest device, which integrates a router, a remote controller, an encoder, an industrial personal computer and a power supply module in a shell, is convenient and flexible to move, and expands the inspection range. Besides, the industrial personal computer can be accessed through external equipment, the route of the unmanned aerial vehicle is planned through the industrial personal computer, route information and instruction information are directly transmitted to the remote controller, and automatic cruise of the unmanned aerial vehicle is achieved. In addition, the remote controller transmits acquired related information of the unmanned aerial vehicle to the industrial personal computer, real-time videos of the unmanned aerial vehicle are transmitted to the industrial personal computer through the encoder, the videos shot by the unmanned aerial vehicle are displayed and analyzed in the industrial personal computer, automatic monitoring and hidden danger recognition are achieved, and the workload of operators is reduced.

The utility model relates to the field of building machinery, and discloses an attachment supporting rod for an ultra-large tower crane and the ultra-large tower crane. The attached supporting rod comprises a main supporting rod, the main supporting rod comprises a plurality of supporting rod sections which are continuously connected in the axial direction of the main supporting rod, and a first lug plate set and a second lug plate set are arranged at the two ends of each supporting rod section respectively; the adjustable supporting rod section is connected with the main supporting rod in the axial direction of the main supporting rod; the adjacent supporting rod sections are connected in an aligned mode through the first lug plate set and the second lug plate set, and the first lug plate set and the second lug plate set are detachably connected through a plurality of pin shafts which are arranged in a non-coaxial mode. The lifting height of the ultra-large tower crane exceeds 200 meters. The attached supporting rod for the ultra-large tower crane is more suitable for the ultra-large tower crane and more convenient to install, and the safety of the ultra-large tower crane is higher.

The utility model relates to the field of inspection robot power supply, concretely relates to a kind of intrinsic safety type inspection robot lithium battery multipath parallel driving walking structure, including four brushless motors connected with four wheels respectively, the brushless motor all adopt intrinsic safety type, battery pack for its separate power supply is equipped on each brushless motor, the intrinsic safety type inspection robot lithium battery multipath parallel driving walking structure, by the parallel power supply mode of intrinsic safety type lithium battery, 4 intrinsic safety type brushless motor driving of intrinsic safety type inspection robot is driven, realize the intrinsic safety driving design of inspection robot, lighten the robot load weight, improve the cruising ability. Parallel driving walking control structure is powered by 5-way intrinsic safety lithium battery, lithium battery is designed as Ex ib I Mb explosion-proof grade, wherein 4-way is respectively powered to four driving wheels, 1-way is powered to control host computer. After parallel connection of each lithium battery, double overcurrent overvoltage charge-discharge protection of ib grade is realized after battery protection circuit.

The utility model discloses a composite structure cable blowout preventer which comprises a shell, the shell is of a hollow structure, flashboard assemblies are symmetrically installed on the side faces of the shell, a front sealing structure is installed at the front end of each flashboard assembly, a hydraulic cylinder is installed at the rear end of each flashboard assembly, and the hydraulic cylinder is connected with the shell. A hollow structure is arranged at the front end of the flashboard assembly, a grease injection channel communicated with the hollow structure is arranged in the flashboard assembly, and after the flashboard assembly is closed, an armored cable is tightened and used for sealing a wellhead through the cable when cable accidents such as cable clamping and wire jumping happen to the cable. Grease injection sealing can be achieved in a pair of flashboards, and the size and the weight of the blowout preventer are greatly simplified.