41results about How to "Center of gravity" patented technology

A tool and material holder fitting to the top of a step ladder has an extremely large number of pockets, cavities, loops, clips, hangers, hooks and the like which securely hold a great variety of power and hand tools, caulking guns, paint brushes and paint pads. A major loop maintained open by an insert with a shape memory holds a large paint pail, bucket or can, and is optionally re-sizable to hold one or two smaller cans. A shallow reservoir on a top panel overlying the top step of the step ladder holds small items but still permits standing on the top step.

A low floor type vehicle 10 is disclosed with a housing box 59 having substantially similar longitudinal length to the longitudinal length of a seat is provided under the seat 58 and a rear cushion for the rear wheel is transversely arranged under the housing box. The housing box is provided with a lid for checking the rear cushion for the rear wheel at the bottom. The engine is suspended from a diamond type frame 20. The rear cushion for the rear wheel is arranged along the rear of an upper frame extended backward and downward from a head pipe.

A vehicle is presented. The vehicle may include a vehicle body frame; a drive wheel suspended from the vehicle body frame; a drive motor for driving the drive wheel; a battery for supplying electric power to the drive motor; a floor panel constituting a floor surface of the vehicle; and a battery support plate having a battery placement surface on which the battery is placed; wherein the battery support plate and the floor panel are supported on the vehicle body frame; and the battery placement surface is positioned below an upper surface of the floor panel.

The invention relates to the technical field of civil aircrafts and provides a method for automatic loading of a civil aircraft. The method for automatic loading of the civil aircraft comprises the following steps: acquiring unit load device information of unit load devices to be loaded; classifying the unit load devices to be loaded according to the unit load device information of unit load devices to be loaded; and loading the unit load devices to be loaded according to the classified information of the unit load devices to be loaded and the performance parameter information of the civil aircraft. Through the automatic loading method comprising the steps, the time of the whole loading process can be obviously shortened, the loading efficiency is greatly improved, and better flexibility is provided.

The invention relates to the livestock herding technology, and concretely relates to an anti-skid breeding oxen semen collection method, which comprises the following steps of (1) injecting water into a semen collection pool; (2) starting an air inlet piece, and injecting air into a semen collection cavity so as to enable the semen collection cavity to be full of air; (3) pulling an oxen into the semen collection pool, and enabling hind limbs of the breeding oxen to stamp on an anti-skid mat; (4) utilizing external stimulation on the breeding oxen, enabling the breeding oxen to ride a semen collection frame, and enabling upper limbs of the breeding oxen to lay on a cushion pad; and (5) guiding a penis of the breeding oxen to enter the semen collection cavity through a semen collection port so as to enter an artificial vagina, and guiding the breeding oxen to walk out after completing semen collection, wherein working personnel takes the artificial vagina out from the semen collection cavity, collects breeding oxen semen, and stops and closes the air inlet piece. In order to solve the problem that the breeding oxen is easy to fall down to be fractured during semen collection, the invention aims to provide the semen collection method for preventing the breeding oxen from falling down and getting hurt.

The invention discloses a liftable electric fan which comprises a body and a lifting tube, wherein the lifting tube comprises an upper tube and a lower tube; the upper tube is fixedly mounted in the body; the inner diameter of the upper tube is greater than the outer diameter of the lower tube; one end of the lower tube is sleeved by the upper tube; the lower tube can extend and retract in the upper tube. The liftable electric fan disclosed by the invention adopts the lifting tube structure which is thick on the upper part and thin on the lower part, and moreover, the relatively thick upper tube is mounted in the body, so that the structural compactness is increased; the upper tube plays a reinforcing role on the body, so that the integral structure is relatively steady, the center of gravity is relatively centralized, and the height can be adjusted by extending and retracting the lower tube during use. Therefore, the center of gravity in the adjusting process is effectively prevented from being deviated, and noise caused by shake of the body is reduced.

The invention introduces a novel water spray ring for cooling a special roll for a copper pipe rolling mill. The novel water spray ring comprises an upper locating ring and a lower locating ring, andthe upper locating ring is in a circular ring shape; the center of the upper locating ring is provided with an upper guide hole used for conveying a copper pipe, and the circular ring surface of the upper locating ring is provided with mounting grooves distributed uniformly; the mounting grooves are all cylindrical, and the bottom of each mounting groove is provided with a mounting hole used for installing a nozzle; the mounting holes are through holes; the end, close to the lower locating ring, of the upper locating ring is further provided with a bolt locating hole which directly faces a bolt through hole in the lower locating ring, and the lower locating ring is fixedly connected to the upper locating ring through locating bolts connected to the bolt locating holes and the bolt throughholes in sequence; the center of the lower locating ring is provided with a lower guide hole; and the upper guide hole directly faces the lower locating hole, and the diameter of the upper locating ring is equal to the diameter of the lower locating ring. The novel water spray ring is easy to install, and the maintenance difficulty is reduced; and the effects of air isolation and quick cooling areachieved.

The invention discloses a movable handrail special for an elevator. The movable handrail special for the elevator comprises a semicircular clamping slot fixed in an elevator car. Sleeves are arranged at both ends of the semicircular clamping slot. A transverse rotary shaft is arranged in the semicircular clamping slot. The upper side and the lower side of the rotary shaft are each provided with an elastic plate located in the semicircular clamping slot. A U-shaped handrail body is arranged on the rotary shaft. The tops of the two ends of the U-shaped handrail body are each provided with an upper sliding rod pointing to the upper portion. A lower sliding rod opposite to the each upper sliding rod in direction is arranged on the face directly opposite to the upper sliding rod. The free end of each upper sliding rod and the free end of each lower sliding rod are each provided with a sliding block. By means of the manner, according to the movable handrail special for the elevator, the rotary shaft and the sliding rods on the rotary shaft are adopted so that the elevator handrail can move, the elevator handrail moves in the same direction as the force of a human body, and therefore the gravity center of the human body can be protected and the human body can be prevented from falling over.

The invention discloses a measuring instrument supporting device. The measuring instrument supporting device comprises a bottom plate, a tripod and a supporting plate, wherein a slide slot is formed in the upper end surface of the bottom plate; a plurality of blind holes are formed in the slot bottom of the slide slot; the tripod comprises three telescopic poles; the lower ends of the telescopic poles are hinged with a slide slot; the slide rod is in sliding fit to the slide slot; the lower end of the slide rod is spliced and matched with the blind holes; and length of the slide slot is greater than that of the slide rod. The measuring instrument supporting device is convenient for regulating the horizontal state of the supporting plate, is small in integral size under a storage state, reduces space occupation, and is conveniently carried along with people and a vehicle.

The invention provides an oil-based ink stirring device. The device comprises a device body, a supporting rod, a stirring rod, a fixed base and a fixing block, wherein the supporting rod is embedded in the side, close to the top end, of the device body, the stirring rod is embedded in the top end of the supporting rod, the bottom end of the stirring rod is fixedly connected with stirring blades, the fixed base is embedded in the top end of the device body, and the fixing block is embedded in the top end of the fixed base; the fixing block comprises a placing plate, an embedding groove, a sloping groove, a displacement block, a tooth mark, an abutting block, a displacement shaft, a limiting bock, a sliding rail and a limiting rod, the abutting block comprises a sucking disc, a retractable block, a lifting rod, a limiting tube and a displacement groove, and the displacement shaft comprises a rotating rod and a connecting rod. The oil-based ink stirring device has the advantages that thedisplacement block is arranged, and the displacement shaft is pushed through the inward retraction when the displacement block is subjected to the weight of sink, so that the abutting block stretchesout to fix an ink tank.

The invention provides a water gun buffering mechanism for a fire-fighting unmanned aerial vehicle. The water gun buffering mechanism comprises a hanging bracket which is arranged below the unmanned aerial vehicle, the hanging bracket comprises a first guide rod, hanging rods are fixedly arranged at the two ends of the first guide rod respectively, the first guide rod is sleeved with a first guide sleeve, a buffering spring is arranged between the first guide sleeve and one of the hanging rods, and the buffering spring sleeves the first guide rod; the water gun buffering mechanism further comprises a water gun body, the first guide sleeve is fixedly connected with the water gun body, and the axis of the water gun body is parallel to the axis of the first guide sleeve; the water gun buffering mechanism further comprises a water pipe, one end of the water pipe is connected with the body of the unmanned aerial vehicle, the other end of the water pipe communicates with the end of the water gun, the water pipe comprises a U-shaped section, and an abutting wheel is arranged below the unmanned aerial vehicle, can move in the length direction of the first guide rod and abuts against the U-shaped section of the water pipe. Reacting force generated when water flow is jetted is absorbed through deformation of the buffering spring, so that posture changes of the unmanned aerial vehicle are reduced, meanwhile, the water pipe is supported through the abutting wheel, and the situation that the gravity center of the unmanned aerial vehicle is affected due to droop and shaking of the water pipe in the flying process of the unmanned aerial vehicle is prevented.

The present invention relates to the technical field of household appliances, in particular to an air duct structure and a device equipped with the air duct structure. The air duct structure comprisesan air wheel, an air duct body, a heating structure and a control device, wherein the air duct body is arranged on the outer side of the air wheel; an air duct is formed between the air duct body andthe air wheel; the heating structure is suitable for heating air in the air duct; and the control device is electrically connected with the heating structure, and suitable for controlling the heatingstructure to start and stop when the air wheel rotates. The air duct structure provided by the invention has the beneficial effects that the air in the air duct is heated through the arrangement of the heating structure, so that the heating structure can be arranged on the air wheel or the air duct body, and the air can be heated by the heating structure when flowing through the air duct, ratherthan the fact that the heating structure is arranged at an air outlet or an air outlet of a housing; accordingly, the influence of the heating structure on the air volume can be prevented; and meanwhile, no moving mechanism is arranged, so that the heating structure can be prevented from moving, the deviation of the gravity center of the device can be prevented, and the device can be prevented from toppling.

The invention relates to a double-gear steering type S-shaped carbon-free trolley, and belongs to the technical field of mechanical design. The trolley comprises a bottom plate device, a large gear device, a driving wheel device, a driven wheel device, a steering device, a push rod device, a front wheel device, a supporting device and a steering bearing frame, wherein the large gear device is installed at the rear part of the bottom plate device; the driving wheel device is installed on one side of the bottom plate device; the driven wheel device is installed on the other side of the bottom plate device; the steering device is installed on the bottom plate device; the push rod device is installed on the bottom plate device; the supporting device is installed in the middle of the bottom plate device; the steering bearing frame is installed at the front part of the bottom plate device; the front wheel device is located at the front end of the bottom plate device; and the front wheel device is connected with the push rod device through the steering bearing frame. Steering energy is controlled by a gear mechanism to improve the steering precision of the trolley, so that the trolley canaccurately complete steering; the gravity center of the trolley can be more centered, the gravity center of the trolley is stable in the walking and turning processes, and the walking stability of the trolley can be improved; the trolley is easy to start and walk; and the trolley is simple in structure, easy to machine, easy to assemble and convenient to popularize and apply.

The invention relates to a helicopter coaxial double-cone rotor parallel manual device. The device comprises a rotor wing group, a parallel mechanism, a forward and reverse rotation mechanism, a variable-cone mechanism and a spring; the rotor wing group comprises a core rod, an inner sleeve, an outer sleeve, a pull rod group, upper and lower paddle groups, upper and lower connecting rod groups, and upper and lower rings; the upper and lower paddle groups are rotationally connected with the upper ends of the inner and outer sleeves; the parallel mechanism is connected with the rotor wing group in parallel, and a hand-operated crank drives the rotor wing group to swing and stretch; the forward and reverse rotation mechanism drives a coaxial double-connecting-frame rotor wing to rotate forwardly and reversely through the inner and outer sleeves, upper and lower large gears, an idle gear and the upper and lower gears; the variable-cone mechanism changes the included angle between the blades and the axis of the rotor wing group through the core rod, the upper and lower rings and the upper and lower connecting rod groups, and changes the lift force and the flight speed. The device is simple and light, can change the flight direction, speed and lift flight, and has the advantages of high navigational speed, large rotor lift force, balanced reaction torque, simple structure, short fuselage, centered gravity center, symmetrical aerodynamic force, small rotation diameter, good stability and the like.