41results about How to "Improve launch accuracy" patented technology

The invention relates to a vehicle-mounted six-degree-of-freedom platform. The vehicle-mounted six-degree-of-freedom platform comprises a base, a vertical vibration layer, a horizontal vibration layer, a pitching layer, a direction adjusting layer and an acceleration sensor, wherein the base is fixedly arranged on a simulated vehicle; the vertical vibration layer is arranged on the base and is used for simulating vibration of the simulated vehicle in the vertical direction; the horizontal vibration layer is arranged on the vertical vibration layer and is used for simulating the vibration of the simulated vehicle in the horizontal direction; the pitching layer is arranged on the horizontal vibration layer and is used for simulating a rotating direction of the simulated vehicle in the horizontal direction; the direction adjusting layer is connected with the pitching layer and is used for simulating a rotating direction of the simulated vehicle in the vertical direction; and the acceleration sensor is fixedly arranged on the base, is in circuit connection with the vertical vibration layer and the horizontal vibration layer, and is used for measuring the vibration of a vehicle body of the simulated vehicle and transmitting driving state direction parameters to the vertical vibration layer and the horizontal vibration layer. The vehicle-mounted six-degree-of-freedom platform has a simple structure, a small size, light weight and low cost; and by stimulating a vehicle driving state, researches on the influences on a vehicle-mounted aircraft positioning system are realized, and the launching precision of the vehicle-mounted aircraft under the vehicle driving state is improved.

A field emission display device (1) includes a cathode plate (20), a resistive buffer (30) in contact with the cathode plate, a plurality of electron emitters (40) formed on the buffer, and an anode plate (50) spaced from the electron emitters. Each electron emitter includes a rod-shaped first part (401) and a conical second part (402). The buffer and first parts are made from silicon oxide. The combined buffer and first parts has a gradient distribution of electrical resistivity such that highest electrical resistivity is nearest the cathode plate and lowest electrical resistivity is nearest the anode plate. The second parts are made from niobium. When emitting voltage is applied between the cathode and anode plates, electrons emitted from the electron emitters traverse an interspace region and are received by the anode plate. Because of the gradient distribution of electrical resistivity, only a very low emitting voltage is needed.

The invention discloses a firefighting ball launching device of a firefighting unmanned aerial vehicle. The firefighting ball launching device comprises a machine body, wherein a fixed plate is fixedly connected with the inner wall of the machine body; a device cavity is arranged in the middle of the fixed plate; a threaded rod is arranged in the device cavity; two ends of the threaded rod are rotatably connected with the inner walls of the device cavity; a cylinder is arranged on the threaded rod in a sleeving manner and is in threaded connection with the threaded rod; a movable block is connected onto the cylinder in a sleeving manner and is movably connected with the cylinder; limiting discs are fixedly connected with two ends of the cylinder; an elastic device is arranged on a part, between the limiting discs and the movable block, of the cylinder; a worm wheel is fixedly connected onto the threaded rod; and the side walls of the worm wheel and the fixed plate are fixedly connectedwith a first drive motor; and the output of the first drive motor penetrates through the side walls of the fixed plate and extends into the device cavity. The firefighting ball launching device is reasonable in structural design, simple to operate and high in launching precision, can continuously launch firefighting balls and greatly improves the firefighting efficiency.

The invention aims at providing a tennis trainer which comprises a trainer rack, a launching mechanism and a horizontally-rotating mechanism. The tennis trainer is characterized in that the launching mechanism is fixed in the horizontally-rotating mechanism, and the trainer rack is positioned outside the horizontally-rotating mechanism and is connected with the horizontally-rotating mechanism. The tennis trainer has the characteristics of undemanding air pressure for tennis launching and high launching accuracy, and can realize the self rotation of the tennis and vividly simulation on playingtennis by human. Besides, the tennis trainer has the advantages of simple structure, lighter weight, high safety performance and lower overall cost.

The invention relates to an engineering supervision device, in particular to an engineering supervision construction management informationization device which comprises a camera, a carrying assemblyand a fire extinguishing device, wherein the carrying assembly comprises a vertical column and a mounting frame; the camera is connected with the mounting frame; the mounting frame is connected with adriving device for driving the mounting frame to rotate around the vertical column; the fire extinguishing device comprises a fire extinguishing grenade and a grenade launcher; the grenade launcher is rotationally connected with the mounting frame and fills the fire extinguishing grenade; the grenade launcher is connected with an adjusting device for controlling the launching elevation angle thereof; the camera, the driving device, the grenade launcher and the adjusting device are controlled by a monitoring system; the carrying assembly is used for mounting the camera and the fire extinguishing device, and through the rotation of the mounting frame, the monitoring scope of the camera and the acting scope of the fire extinguishing device are widened; during a fire, an operator can controlthe monitoring system to start an alarm and the fire extinguishing device and the grenade launcher launches the fire extinguishing grenade for extinguishing the fire or controlling spreading of the fire, so that the time is gained for subsequent firefighting.

The invention relates to the technical field of launching mechanisms, in particular to a launching mechanism based on a rigid ejector pin. The launching mechanism comprises a top plate, wherein a ball storage bin for storing elastic shots is fixedly connected to the bottom of the top plate, an ejector pin fixing seat is connected to a ball outlet of the ball storage bin, a ball outlet through hole is formed in the ejector pin fixing seat, a launching pipeline is connected into the ejector pin fixing seat, the ball outlet through hole communicates with the launching pipeline, a driving plate is rotationally connected into the ball storage bin and driven by a driving plate motor, a limiting assembly for limiting the elastic shots from passing through the launching pipeline is arranged on the ejector pin fixing seat, openings are symmetrically formed in the left side and the right side of the launching pipeline, launching friction wheels are arranged at the openings in the two sides of the launching pipeline, the launching friction wheels are driven by a brushless motor, and the launching friction wheels is located in front of the limiting assembly. According to the launching mechanism, the elastic shots can be preset, and the uncontrollable multi-shot situation is prevented, so that controllable single shot and multi-ball continuous shot are realized, and the overall shooting precision can be improved.

The invention discloses fireproof and explosion-proof combined fireworks which comprise a transmitting seat body (1), transmitting holes (2) of the transmitting seat body (1) and a fireproof cover plate (11). The transmitting seat (1) is made of light fireproof materials, a lead wire (3) is embedded in the transmitting seat body (1), the bottoms of the transmitting holes (2) are communicated with one another by the lead wire (3), inner barrels (8) are arranged in the transmitting holes (2), a lead hiding hole (4) is formed in the transmitting seat body (1), an ignition portion of the lead wire (3) is hidden in the lead hiding hole (4), the fireproof cover plate (11) is made of light fireproof materials, fireproof plugs (6) for the transmitting holes and a fireproof plug (5) for the lead hiding hole are formed in the fireproof cover plate (11), the fireproof cover plate (11) covers the transmitting seat body (1), the fireproof plugs (6) for the transmitting holes are inserted into the transmitting holes (2), and the fireproof plug (5) for the lead hiding hole is inserted into the lead hiding hole (4). The fireproof and explosion-proof combined fireworks have the advantages that the fireproof and explosion-proof combined fireworks are high in transmission precision and low in transmission powder usage, the transmitting holes are short, the manufacturing cost can be saved, the safety coefficient can be increased, the fireworks can be prevented from being ignited by external fire sources, and accordingly sympathetic detonation accidents can be completely eradicated during production, transportation and storage.

The invention provides a gun type slingshot. The gun type slingshot comprises a slingshot machine, a case, a launching belt and a trigger; a door is arranged at the front end of the slingshot body, and while a tail case is arranged at the rear end of the slingshot body; the case is glidingly arranged on the slingshot body and connected with the tail case; a column type releasing device is arranged on the top end of the case, and while a trigger groove is formed in the bottom part of the case; the launching belt is detachably arranged on the door and can be stretched to the column type releasing device; the trigger is connected with the column type releasing device and drives the column type releasing device to release the launching belt; the lower end of the trigger extends out from the case through the trigger groove. The gun type slingshot can overcome the problem of force leakage of the launching belt, is convenient to fix the launching belt and can increase the launching precision.

The invention provides a launch module of a table tennis ball picking device, which includes a launch unit and a visual recognition unit; the launch unit is connected to the base and connected to the control unit for signals; The recognition part is installed at the launch end of the launch part; the control part controls the movement of the base based on the recognition information of the visual recognition part, and the control part controls the movement of the base to a preset distance position according to the recognition result, and adjusts the posture direction of the base; the control part Calculate the distance between the preset distance position and the target position according to the recognition information of the visual recognition part, adjust the initial launch speed of the launch part, control the launch part to adopt a circular rotation method, and launch towards the target launch direction at the initial launch speed, so as to realize Launch the ping pong ball to the target location. The invention can realize the adjustment of the launching speed according to the actual launching situation or the launching scene, not only improves the work efficiency of delivering the table tennis balls, but also can improve the launching accuracy of the table tennis balls.

The invention provides a launching airflow-uniform air cannon launching device. The device comprises an air compressor, an intake valve, an air chamber, a launching valve, a first pressure sensor, a second pressure sensor, a quick release mechanism, a PLC, a laval acceleration pipe and a launching pipe; the air compressor is connected with an air inlet of the air chamber through the intake valve;an air outlet of the air chamber is connected with one end of the quick release mechanism through the launching valve; the other end of the quick release mechanism is connected with the launching pipethrough the laval acceleration pipe; the first pressure sensor is arranged in the air chamber for monitoring the pressure value in the air chamber; the second pressure sensor is arranged on the launching valve for monitoring the pressure value of released gas in the launching valve; and the PLC is electrically connected with the intake valve, the launching valve, the first pressure sensor, the second pressure sensor and the quick release mechanism. The device enables launching airflow to quickly, uniformly and largely flow out within shorter time to act at the bottoms of cannons to push the cannons to move.

The invention provides a recoil-free firework launching device adopting an electromagnetic counter-recoil mechanism and a firework bullet launching method. The launching device comprises a barrel, a movable powder chamber, a breech mechanism and an electromagnetic brake. According to the invention, rapid opening of a nozzle under different pressures is implemented by adjusting the electromagnetic resistance, the latch opening time and the closing time of pressure relief of a chamber pressure are controlled to adjust the tail jet flow pressure to implement initial speed control, and the launching height and the launching speed are controlled by controlling the bullet chamber exiting speed. According to the invention, the launching height and the launching speed can be controlled only by adjusting the current and the voltage which are input into the electromagnetic brake, impact damage to firework bullets in the launching process is reduced, the firework launching precision and the mechanical rigidity of the firework launching device are improved, and specific character or pattern fireworks are guaranteed to be implemented according to the design effect.

The invention discloses a fire extinguishing bomb launcher. The fire extinguishing bomb launcher comprises a barrel, an arming mechanism, a sighting telescope and a launching sleeve; the barrel is made of an aluminum alloy; the arming mechanism comprises a shell, a button connected with the shell in a sliding manner, and a pin shaft for controlling the button to slide or still relatively to the shell; a power source and a circuit board which are electrically connected with each other are arranged in the shell; a first contact terminal and a second contact terminal are arranged on the button; a return spring is arranged between the button and the shell; a first contact and a second contact are arranged on the circuit board; a sliding groove is formed in the pin shaft; the sighting telescope comprises a substrate, a slider and an optical sight; the launching sleeve comprises a sleeve body; two contact terminals are detachably arranged in the sleeve body and electrically connected with the circuit board. The fire extinguishing bomb launcher of such a structure has the advantages of convenient assembling and disassembling, high launching accuracy, high sighting efficiency, high arming reliability and low wrong arming rate.

The invention provides an air gun launching device with a quick release mechanism. The air gun launching device includes an air compressor, an air inlet valve, an air chamber, a launch valve, a firstpressure sensor, a second pressure sensor, a quick release mechanism, a PLC, a Laval acceleration pipe and a launching tube. The air compressor is connected with an air inlet of the air chamber through the air inlet valve, an air outlet of the air chamber is connected with one end of the quick release mechanism through the launch valve, the other end of the quick release mechanism is connected with the launching tube through the Laval acceleration pipe, the first pressure sensor is disposed at the position of the air chamber and used for monitoring a pressure value in the air chamber, the second pressure sensor is disposed at the position of the launch valve to be used for monitoring a pressure value of gas released at the position of the launch valve, and the PLC is electrically connectedwith the air inlet valve, the launch valve, the first pressure sensor, the second pressure sensor and the quick release mechanism. The device enables launched air flow to flow out quick evenly massively in a short time, and acts on the bottom of a projectile to promote the movement of the projectile.

The invention discloses a cartridge type automatic repeating crossbow. According to the cartridge type automatic repeating crossbow, a linear motor is mounted above a crossbow arm, a runner sliding block of the linear motor is provided with a string pulling mechanism of automatic string buckling and releasing, an arrow box for automatically supplying arrows is mounted at the bottom of the crossbowarm, and automatic winding of the crossbow and automatic launching of the arrows are achieved through combination of the linear motor and the arrow box. The cartridge type automatic repeating crossbow uses the reciprocating linear motor to drive the string pulling mechanism to automatically complete tension and release of a bowstring, so that automatic continuous launching of the arrows can be achieved by being matched with the arrow box, the launching speed of the crossbow is improved effectively, the cartridge type automatic repeating crossbow has the characteristics that the structure is simple, operation is convenient, labor saving is achieved in using, the launching precision is high, and problems of the prior art are solved.

The invention discloses a ballistic correction method for multi-bullet shooting. The ballistic correction method is realized through a detector, a command and control unit, a multi-bullet shooting assembly frame, a turret system, an integrated scheduling module, an angle calculating module and a data compensation module. By the method, left and right position deviation xn, upper and lower position deviation yn, heading error angles alpha' n and pitching deviation angle beta'n of frame positions of the multi-bullet shooting assembly frame and an optical axis of the detector, error in ballistic resolving can be eliminated, and shooting precision can be improved.

The invention discloses a self-supplied energy buffering and reset integration device and a method of using the same. The device comprises a mover module, a stator module and an energy feeding module; the mover module is composed of a permanent magnet group and a straight rod, and the permanent magnet group is fixed on the straight rod. The stator module is divided into two sections connected before and after; the first section is the eddy current damping tube, which is a double-layer tube structure composed of a magnetically conductive outer tube and a conductive inner tube; the second section is an electromagnetic coil tube, including coil windings And the coil core, the mover and the stator are coaxially installed, the mover can move linearly in the stator and maintain a certain air gap; the energy feeding module includes a rectifier, an energy storage device, an inverter, a charge switch and a discharge switch, and coil windings The charging switch is connected with the rectifier, the rectifier is connected with the energy storage device, the coil winding is connected with the inverter, and the inverter is connected with the energy storage device through the discharge switch.