36results about How to "Overall weight balance" patented technology

The bicycle transmission device includes a hollow tube extending through the bottom bracket and two caps are connected to two ends of the hollow tube. A motor unit has two extensions and multiple fixing assemblies, wherein the extensions are positioned by the caps. The fixing assemblies fix the motor unit to the underside of the bicycle. A shaft extends through the hollow tube and a first one-way transmission device is connected to one end of the shaft. A chainwheel and a first passive wheel are connected to the other end of the transmission shaft. Two cranks are connected to two ends of the transmission shaft. A motor located in the motor unit and has a second passive wheel. The first and second passive wheels transmit energy via the belt. The present invention reduces the space required for the motor and balances the weight of the bicycle.

A magnet mounting structure for fastening a magnet to a spoke of a two-wheeled vehicle even without tool includes a knob member having a screw and the magnet and an internal thread member in which the screw is screwed. The spoke is held between the knob member and the internal thread member to allow the magnet to be fastened to the spoke.

A balance-enhancing and vibration-reducing device is incorporated in a wrist exerciser to enhance force balance and reduce vibration caused in the operation of the wrist exerciser. The device includes a ring mounted in a casing of the wrist exerciser and defining diametrically opposite holes that rotatably receive axles of a rotor of the wrist exerciser. A coupler is mounted to an inner circumference of the ring in position corresponding to at least one of the holes. The coupler includes a tube extending in a radial direction of the ring. The tube forms a central bore to rotatably receive the corresponding axle. A plurality of resilient pawls is formed at a free end of the tube and distributed along a circumference of the free end. A balance-enhancing and vibration-reducing element has a central bore fit over the tube of the coupler by elastically deforming the pawls. The pawls so deformed resume their original position by the resiliency thereof to retain the balance-enhancing and vibration-reducing element on the tube. The balance-enhancing and vibration-reducing element effects weight balance and absorption of mechanical vibration force during the rotation of the rotor thereby maintaining stable and noiseless operation of the wrist exerciser.

The invention discloses a transmission mechanism of telescopic morphing wing, which comprises a speed reducing motor, a steel cable, a winch and a pulley and is characterized in that: the speed reducing motor drives the winch to unwind and wind the steel cable wound on the winch; a telescopic section of the wing, the steel cable, the winch and the pulley are embedded in a main wing; the pulley is positioned at the tail end of a girder under a wing face skin on the wing tip of the main wing; and steel cable controls the telescopic change of the telescopic section of the wing in real time through the pulley. The transmission mechanism of the telescopic morphing wing has the advantages of simple structure, light weight, safety, reliability and the like, can relatively better meet the requirements on the structure of an aerocraft, takes efficiency and weight into account and fulfils the aim of the telescopic change of the wing.

A washing machine including a tub which is configured to accommodate water; a rotating tub which is disposed at the inside of the tub; at least one boss which is protruded from the tub and equipped with a coupling hole; a weight balance which is equipped with at least one insertion hole at which at least one boss is inserted; a pin body which is inserted at the coupling hole of the boss, and a pin which is equipped with a pin head which is extended from the pin body for preventing the weight balance from separating away, and the pin body includes at least one boss weld metal zone which is metal-welded at the inner surface of the coupling hole for the pin to be fixed to the boss.

The invention discloses a double-balloon structure for vibration forming machine. A cover body (6) is arranged above a heavy punch (1). A shifting shaft for heavy punch passes through the middle of the cover body (6). A lower pedal (7) is arranged on the top of the heavy punch (1). Two gasbags (5) are arranged between a gasbag housing plate (3) and the lower pedal (7) and are respectively positioned at the two sides of the shifting shaft of the heavy punch. The two lateral parts of the cover body (6) are provided with two groups of hydro cylinders; wherein, the gasbag housing plate (3) is connected with the cover body (6) by a bolt; a gasbag seat arranged at the upper part of the gasbag is connected with the cover body (6) by a bolt, and the gasbag seat arranged at the lower part of the gasbag is connected with the lower pedal (7) by a bolt; the gasbag seat arranged at the lower part of the gas airbag and the lower pedal are in floating contact with the upper plane surface of the heavy punch. The double-balloon structure can increase the bulk specific weight of an anode forming block, ensure the uniform density of the anode, greatly improve the quality of the anode forming block, increase conductivity, and reduces the unit cost of electrolytic aluminum; the gasbags have extremely convenient disassembly, with the overhaul cycle shortened.

The invention discloses an intelligent fuel oil pump with a metering control function. The intelligent fuel oil pump comprises an intelligent control unit, a servo motor, a gear pump, a differential pressure scanning measuring device, a differential pressure sensor and an oil path selection control valve, wherein the differential pressure scanning measuring device is located at the outlet of the gear pump, a throttling opening with a proper flow area is gated according to the flow range, and relative high flow measurement sensitivity is achieved while the relative low differential pressure isguaranteed; the intelligent control unit converts the differential pressure into the real-time flow, and the rotating speed of the servo motor is controlled according to the deviation between the expected flow and the real-time flow, so that the required fuel oil amount is pumped out by the gear pump; and the oil path selection control valve is used for gating a main oil path and an auxiliary oilpath of a fuel oil nozzle, so that the oil supply requirement of less flow in the engine starting process is met. According to the intelligent fuel oil pump with the metering control function, the fuel oil can be supplied as needed, the intelligent fuel oil pump has the advantages of being high in metering precision, small in pressure loss, compact in structure and convenient and fast to use, andcan be conveniently used for fuel oil control of an aero-engine and a gas turbine.

The invention discloses a preparation method of high-durability kiln furniture for a positive electrode material of a lithium battery power battery. An inner layer and an outer layer of the kiln furniture are made of different materials respectively; a substrate layer of the outer layer and a corrosion-resistant layer of the inner layer are laminated and molded and then subjected to firing treatment; a laminating integral forming technology is adopted, so that one-time forming of the substrate layer and the corrosion-resistant layer is realized, and strong binding force, high yield and low cost of a green body are ensured; due to the design of the inner layer and the outer layer, the outer layer can be used for obtaining good heat resistance, the inner layer can also be used for obtainingstrong alkali resistance, and on the premise that the mechanical strength is not sacrificed, the kiln furniture weight and the corrosion resistance are both considered.

The cooker has a blocking unit (18) movable between blocking and release positions of a locking/unlocking unit. The unit (18) cooperates with a control unit so that movement of the control unit from a close position to an open position permits the passage of the unit (18) from the blocking position to release position. The unit (18) is made of metallic material and the control unit is made of plastic material. - The locking/unlocking unit is in locking and unlocking positions when the blocking unit (18) is in blocking and release positions, respectively, and the control unit is integrated to a control handle.

The invention discloses a waterproof lightweight concrete prefabricated slab. The waterproof lightweight concrete prefabricated slab comprises a concrete layer, fireproof packing layers, heat insulation layers, a keel frame and surface layers, wherein the surface layers are arranged on the upper and lower surfaces of the prefabricated slab; the fireproof packing layer, the heat insulation layer, the concrete layer, the heat insulation layer and the fireproof packing layer are arranged between the upper and lower surface layers respectively; a strengthened layer of the keel frame comprises a grid framework made of a carbon fiber guide rod and a metal screen mesh which covers the grid framework; the keel frame covers the concrete layer; and each heat insulation layer is formed by covering a polyurethane foam layer with a mortar layer. According to the waterproof lightweight concrete prefabricated slab disclosed by the invention, the fireproof packing layers and a fireproof keel layer in the concrete prefabricated slab are added into the concrete prefabricated slab, the fireproof performance of the prefabricated slab can be effectively improved, and a panel is provided with a non-combustible inorganic heat insulation material, so that flame and high-temperature gas can be prevented from entering the prefabricated slab from the surfaces when fire disasters occur, and the possibility that the prefabricated slab is expanded and deformed when being heated is reduced; and by arranging the plurality of layers of composite materials, the heat insulation performance, the fireproof performance and the weight of the prefabricated slab are combined, so that the foundation construction cost of buildings is reduced.

The invention belongs to the technical field of application of near-to-eye display equipment, and discloses a method for enhancing the visual ability of human eyes based on MR glasses, a system and equipment. The method comprises activating a telescopic mode according to the visual demand of a user, and capturing a long-distance scene in the front of the visual field of the user through a telephoto camera of the equipment; and after optimization or/and AI image enhancement are/is carried out on the image of an magnified fixation area, presenting the image to the user, so that the user can see the distant scene beyond the visual ability range clearly, and the visual ability of the user in looking at the distance is enhanced. The optical structure of a front camera on the existing MR glasses is improved by utilizing a light guide optical fiber, an optical waveguide or a periscope technology, so that the whole MR glasses are lighter and thinner. An eye movement tracking device and a head movement tracking device are used for selecting the focusing area of the image, the magnification power is determined through eye movement interaction and/or gesture interaction, a MR glasses display previews the photographing area in real time, and finally a picture is taken.

An electric drive device for a vehicle includes: a rotating machine that is used as a driving force source for traveling of the vehicle; a differential device configured to distribute power transmitted from the rotating machine to right and left driving wheels; and a retarder provided in a power transmission path between the rotating machine and the differential device and configured to generate a braking force. The retarder is either an electromagnetic retarder or a fluid retarder. The rotating machine and the retarder are arranged on opposite sides of an axis of the differential device in a front-rear direction of the vehicle in a plan view seen from above the vehicle, the axis of the differential device being parallel to a width direction of the vehicle.

The invention relates to a micro-system packaging shell with a heterogeneous integrated double-sided cavity structure and a manufacturing method. The micro-system packaging shell comprises a shell body, a metal bottom plate is installed in the middle of the shell body, the shell body forms the double-sided cavity structure, the micro-system packaging shell also comprises an upper metal frame and a lower metal frame, the middle of the metal bottom plate is hollow, and amultilayer ceramic substrate is embedded in the hollow; cavities are formed in the surface and the bottom surface of the multilayer ceramic substrate; the upper metal frame and the lower metal frame form sealing between the multilayer ceramic substrate and the metal bottom plate; a substrate step structure is arranged at the edge of the multilayer ceramic substrate, a bottom plate step structure is also arranged at the hollow edge of the metal bottom plate, and the substrate step structure is matched with the bottom plate step structure; a through hole is formed in the multilayer ceramic substrate, a step is arranged in the through hole, and an SMP glass insulator is embedded in the through hole; notches are formed in the side walls of the upper metal frame and the lower metal frame, and ceramic insulators are embedded into the notches. Multi-chip airtight packaging can be realized, the microwave performance is good, and the reliability is high.

The invention discloses a radiator structure. The radiator structure comprises heat-radiating fins, a first radiating part and a second radiating part, wherein an opening is arranged among the heat-radiating fins, the first heat-radiating part is arranged in the opening and is in matching contact with the opening, the first heat-radiating part is provided with a groove and is made of a copper material, the second heat-radiating part is completely arranged in the groove and is in mutual contact with the groove and is made of an aluminum material. The radiator structure has flexible structure design and low cost, can give attention to the heat-radiating performance and product weight, and is easy to assemble without special processing equipment.

The invention relates to the technical field of chemical industry, in particular to a simple lamellar type self-heating element and a preparation method and application thereof. The simple lamellar type self-heating element is prepared from the following ingredients: pig iron powder, activated carbon, polypropylene fibers, xanthan gum, sodium carboxymethyl cellulose, sodium polyacrylate, industrial salt, vermiculite and water, wherein the sum of percentages of all the ingredients is 100%. The industrial salt and the water are mixed to form the simple lamellar type self-heating element, and the whole self-heating element is very thin and very small in size; meanwhile, a lamellar solid package is finally formed, and the problem of leakage of heating substances cannot be caused; and moreover, the content of the polypropylene fibers, the xanthan gum, the sodium carboxymethyl cellulose and the sodium polyacrylate in the self-heating element is low, so that the cost of the self-heating element is greatly reduced. The vermiculite is added, so that the heat preservation effect of the self-heating element is improved.

The invention discloses an oblique photography control system for three-dimensional modeling. Theo blique photography control system is characterized by comprising an aircraft, a camera and a control system. Double-lens shooting is adopted, when the system works, the flight direction is a forward path, the first shooting of the camera is carried out at an angle position perpendicular to the ground, then the camera rotates towards the flight direction, second shooting is carried out after a preset angle with the ground is reached, third shooting is carried out when the camera swings to a preset angle opposite to the flight direction, then the camera returns to a neutral position for standby, and the process of three times of photographing is called a period. The control system comprises a main controller, a GPS unit, a communication circuit and a sensing monitor, and the whole process is controlled by the main controller, such as the rotation angle of a steering engine, the photographing control of the camera, GPS signal acquisition, photo storage and the like. According to the invention, the data quality, efficiency, weight and cost can be well considered at the same time.

The invention relates to a stopping warning board which comprises a mounting baseboard. A warning pattern area (1), a power supply module (2) and a control module (3) are arranged on the mounting baseboard, at least one warning pattern is arranged in the warning pattern area (1), a plurality of LEDs are arranged along profile of the warning patterns, the power supply module (2) supplies power for each LED in the warning pattern area (1), and the control module (3) controls turning on and off of each LED in the warning pattern area (1) and manages charging of the power supply module (2). The stopping warning board is simple in structure, convenient to use, balanced in size and weight, high in windproof and rainproof performance, has various warning modes and is high in reliability, and visual range of the stopping warning board at night is greater than two hundred meters.