33results about How to "Achieve self-stabilization" patented technology

The invention relates to a computer-based digital image processing platform, which includes a bearing platform, on which a processor, a filter and a display are installed, on the bearing platform there is a first bracket that is rotatably connected along a vertical axis, on the first bracket there is a The second bracket is pivotally connected to the axis, and the third bracket is pivotally connected along the horizontal axis on the second bracket; the camera equipment and the first rotor are arranged horizontally on the third bracket, and the third bracket is arranged on the third bracket. Two rotors, the first rotor and the second rotor are respectively driven by motors; the first torque motor is coaxially connected with the front and rear axes of the second support on the first support, and the left and right axes of the third support are coaxial on the second support The connected second torque motor; the second support, the third support, the recording device, the first rotor, the second rotor, the motor and the second torque motor form a self-stabilizing recording system; the invention can prevent the accidental shaking of the recording device , and there is no vibration or resonance when the camera turns.

The invention relates to a centrifugal force pendulum device (10), comprising a pendulum mass carrier (11) that can be rotated about an axis of rotation (15) and at least one pendulum mass (12), which is supported on the pendulum mass carrier (11) in such a way that the pendulum mass (12) can be moved along a track (18) between two end stops (19, 20) that are arranged at a distance from each other in the circumferential direction with respect to the axis of rotation (15). A spring device (23) is provided, which is designed to push the pendulum mass (12) into one of the end stops (19, 20) when the rotational speed of the pendulum mass carrier (11) about the axis of rotation (15) is below a rotational speed limit. The invention further relates to a drive train (1) of a motor vehicle.

The invention discloses an arc-shaped wing aircraft capable of helical flying. The arc-shaped wing aircraft is characterized in that a central machine body adopts a single arc-shaped wing, the two sides of the arc-shaped wing aircraft are provided with straight wings, and the arc-shaped wing and the straight wings are in a straight flying wing layout in the horizontal direction; two flying modes such as helical-wing flying and straight-wing flying are adopted, the flying process can be controlled, and the short-distance taking off and landing can be achieved; in the taking-off and landing process, the helical type roll-flying action is finished by thrust differential of two ducted type engines, and the short-distance taking off and landing can be realized; the aircraft also has a normal fixed-wing rolling taking-off and landing; the aircraft flies in a helical manner, the arc-shaped wing and the straight wings are wholly regarded as single rotating wings, then the aircraft rotates around the axis of the helical-flying track, and lifting force capable of controlling the flying is provided for the aircraft; lifting ailerons are used for controlling the taking-off and landing of the aircraft, and the flying control in the horizontal direction is dependent on thrust differential and the lifting ailerons of the two groups of ducted type engines; the self stability of an inherent longitudinal and horizontal flying mode of the aircraft is realized by the arc-shaped wings and the dihedral straight wings.

The invention discloses a self-stabilizing operating platform for an elevator shaft, which comprises an upper layer platform, a longitudinal support frame, a diagonal bracing support and a lower layer platform, wherein the upper layer platform is in a square shape, and the area is slightly smaller than the cross sectional area of the elevator shaft; the area of the lower layer platform is smallerthan that of the upper layer platform; one side, which is close to an elevator door, of the lower layer platform and the corresponding side of the upper layer platform are positioned in the same vertical plane; upper and lower ends of the diagonal bracing support are respectively fixed to one side, which is away from the elevator door, of the upper and lower layer platforms; rectangular support legs for being clamped at the external corner of a wallboard at an elevator opening are arranged on one side, which is close to an elevator door, of the lower layer platform; hanging rings are respectively arranged at four corners of the upper layer platform, the height of the two hanging rings close to one side of the elevator door is greater than that of the two hanging rings away from one side of the elevator door; and when the platform is hoisted, and the top of each hanging ring is positioned at the same height, the rectangular support legs are positioned in the elevator shaft. The operating platform is simple in machining, and can realize self-stabilization and can be used repeatedly, and the safety of the platform is increased by fixed bolts of the upper layer platform.

The present invention provides an expandable tent based on a tensegrity structure, which includes two kinds of connectors, connecting rods and rope members; There is a connection hole for connecting with the end of the connecting rod and the telescopic rod; one end of the second connector is provided with a connecting hole to connect with the connecting rod and the telescopic rod member, and the other end adopts a 'cross'-shaped structure for connecting with the rope member . Utilizing the self-balancing characteristics of the tensegrity structure, the technical problem of unstable tent structure in the prior art is solved. The structure of the tent frame is simple, the number of components is small, and the structure is easy to build; and due to the self-balancing characteristics of the tensegrity structure, the joints of the components do not need additional bolts and screws for fixing, and the entire structure can be supported by the connection between the cables and rods. stand up. And after the tent structure is built, the folding and unfolding of the entire tent structure can be realized by changing the length of the telescopic rod.

The invention provides a vertical take-off and landing fixed-wing cargo unmanned aerial vehicle, which includes a fuselage, a mechanical arm is mounted under the middle beam of the fuselage, a cargo warehouse is arranged above, and winglets and landing gear are symmetrically installed on both sides. The first landing gear is A-shaped, the braces of the two landing gears are fixed to the middle beam through connecting rods, the first power system parallel to the fuselage is fixedly connected to the middle beam through the first carbon rod, and the second power system perpendicular to the fuselage The system is fixedly connected to the upper beam of the fuselage through the second carbon rod. An equipment compartment is arranged above the upper beam. The flight control, receiver, GPS and battery are loaded in the equipment cabin. The flight control signal is connected to the receiver and GPS, and the battery Power the flight controller, receiver and GPS. The vertical take-off and landing fixed-wing cargo unmanned aerial vehicle described in the present invention combines the advantages of the rotary-wing unmanned aerial vehicle and the fixed-wing unmanned aerial vehicle. Greatly increased cruising range.

The invention discloses a wheel type truck-mounted drilling rig which is characterized in that a movable frame with a drilling device is disposed on a body, the body comprises a mining flatbed truck and a hydraulic winch, a support seat is disposed on the mining flatbed truck, a support beam which is used for allowing the movable frame to be horizontal is disposed on the support seat, a guide rail clamp is further disposed on the mining flatbed truck, the movable frame comprises a #-shaped frame, two ends of the two crossbeams of the #-shaped frame are fixedly connected with main support oil cylinders, two longitudinal beams of the #-shaped frame forms two parallel guide rails which are in slide fit with a movable support, the movable support is hinged to the outer end of the support beam, a vertical oil cylinder which is used for allowing the movable frame to be vertical is connected between the movable support and the support seat, an n-shaped frame is fixedly connected between cylinder bodies the two main support oil cylinders, and a drilling rig turn plate is disposed between the n-shaped frame and the drilling device. The wheel type truck-mounted drilling rig has the advantages that the wheel type truck-mounted drilling rig can be moved in a tunnel without damaging sleepers, the drilling rig is good in rigidity, and drilling hole positions can be adjusted conveniently.

The invention belongs to the technical field of design of shield tunneling machine cutters, in particular to a tapered cutter of a shield tunneling machine. The cutter, spokes and a shell-shaped tool rest form a tapered structure, and a cone-apex half angle alpha is less than or equal to arctanf, wherein alpha is the cone-apex half angle, and f is the static friction coefficient between the cutter of the shield tunneling machine and a boulder. The spokes are distributed uniformly, the number N of the spokes is an integer, A is the width of the spokes, B is less than min (L, W, H), and L, W, H are determined by geological exploration information, where L is the maximal size of the boulder above in the length direction, W is the maximal size of the boulder above in the width direction and H is the maximal size of the boulder above in the height direction. According to the scheme, the rigidity of the cutter is improved, the interaction between a tool and the boulder is lowered, and the working performance of a shield is effectively improved; furthermore, the energy consumption during boosting can be effectively reduced under the condition of the same tunneling quantity; and the working efficiency can be improved and the energy consumption can be reduced by about 5 percent respectively by preliminary estimation, so that the utilization rate of the shield tunneling machine is effectively improved.

The invention discloses a construction method for underground excavation of a subway station, which is characterized in that it comprises the following steps: S1: using the pipe shed method to construct above the soil in the area to be excavated to form the upper pipe shed support; S2: The two sides and the bottom of the soil body in the area to be excavated are carried out for the first time in all-round high-pressure spraying method construction to carry out piling and hole layout; S3: divide the area to be excavated into a plurality of excavation intervals, and use the pipe shed method and freezing The method carries out construction to the soil between the adjacent described excavation intervals, and the soil on both sides and bottom of the area to be excavated into pipe shed pipes and frozen pipes to form frozen walls; S4: for each Excavation and support are carried out in the excavation section; this construction method can solve the problem that the prior art underground excavation method cannot be applied when the covering soil is relatively shallow and the structural section is large when constructing the subway station.

The invention relates to a two-step preparation method of hollow silica particles, comprising the following steps of: heating ammonia-water to 25-75 DEG C; slowly dripping a part of silica precursor in the ammonia-water for reaction for 5-10 minutes; then adding rest silica precursor at constant temperature; stirring for reaction for a couple of hours; and centrifuging, washing, and drying in vacuum to obtain hollow silica particles. In the system, the weight percentage: water and ammonia-water (25 percent) is 15-150: 1; and the weight percentage of water and silica precursor is 10-30: 1. The silica precursor which is firstly added accounts for 2-20 percent of total amount of silica precursor; and the reaction temperature is 25-75 DEG C.

The invention discloses an ignition and detonation combustor by utilizing shock wave focusing and an ignition and detonation method thereof, and belongs to the technical field of engines. According tothe combustor, a primary shock wave focusing chamber performs high-frequency reciprocating translational motion along with a dynamic concave cavity and is periodically connected and disconnected witha gas collecting flow guide cavity, generated shock waves are reflected in the concave cavity, focused to form a local high temperature and directly ignites combustible mixture to crack and oxidize macromolecular fuel in a high-pressure area, so that a large amount of easy-to-detonated activating groups and micromolecular gas are generated; and a secondary shock wave focusing chamber is reverselyarranged relative to the primary shock wave focusing chamber, the reflected shock waves in the primary shock wave focusing chamber are reflected again in the secondary shock wave focusing chamber, focused to form a three-wave structure to form a local high temperature and directly detonates detonation waves in the high-pressure area. The invention further provides an ignition and detonation method. According to the method, two-time shock wave focusing is adopted for ignition, so that the stability of the working process is effectively improved, and compared with a traditional shock wave focusing ignition mode, the method effectively enhances the high-frequency cyclic detonation characteristic.