40 results about "Weight problem" patented technology

The invention discloses a continuous polymerization device which prepares PBO, which relates to a continuous polymerization device. The invention brings about solutions to the stirring problems caused by the high viscosity of PBO polymer and to the low molecular weight problems existed in the polymer which is prepared by current manufacturing process. The discharge hole of the pre-polymerization reactor of the invention is communicated with the charging hole of screw extruder unit which consists of 2-10 full-bay screw extruders which are connected by in-line platform combination or staging pack; wherein the screw, screw barrel, the charging hole, the discharge hole are acid-resisting and corrosion-resisting; the working temperature for screw is 20-300 DEG C, the extrusion pressure for the screw extruder is 0.1-30 MPa, the diameter D for the screw is 20-200 mm, the length-diameter ratio L/D for the screw is 10-60, the rotation speed is 1-1000r/min, and the vacuum degree in the screw is minus 0.1 MPa. The continuous polymerization device has the advantages of improved molecular weight, quick reaction speed, short manufacturing cycle, uniform material mixture and full reaction, which can realize continuous operation and is conductive to commercial process.

The invention relates to a method and device for controlling additional takeoff thrust of a plane. The method includes: receiving a first instruction for activating the additional takeoff thrust from a pilot of the plane, responding the first instruction, and sending activating signals for activating the additional takeoff thrust to each engine of available engines of the plane. After the additional takeoff thrust is activated, the pilot only needs to push a throttle lever to a normal takeoff position, and the additional takeoff thrust can be achieved. The pilot only needs to send one instruction to activate the additional takeoff thrust of each engine, and single-activation misoperation in a traditional scheme is avoided. Additionally, the first instruction can be received by a software button, and the activating signals are transmitted through a bus of the plane. Activation and closing of the additional takeoff thrust can be achieved without special buttons and transmission lines, and therefore a weight problem and an arrangement problem in the traditional scheme are solved.

The present invention relates to the technical field of bicycles, particularly relates to a pedal kickstand. The pedal kickstand of the present invention comprises a pedal, and an earth stand capable of being folded mounted to the outer side of the pedal by pin joint; when the earth stand is unfolded outward to stand on the ground, the bicycle can be held upright steadily. The present invention is mounted to a bicycle and the pedal kickstand is connected to the crank of the bicycle; when the earth stand is unfolded outward for a specific angle, the bicycle can be held upright; for the pedal kickstand provided by the present invention directly utilizes the pedal as the kickstand, the potential hazard caused by the conventional kickstand being exposed can be eliminated, and at the same time, it will not cause the weight problem of additionally mounting a kickstand; it is more beautiful as a whole.

A yaw-type electric servo mechanism for a steering gear system, using a rare-earth motor as a driving source, after the torque is increased through a reduction box, it is transmitted to the output of the yaw system, which can drive the load to swing with a limited rotation angle, and the yaw system will swing The angle is fed back to the swing position signal of the control system through the potentiometer. The transmission scheme combining NGW planetary gearbox and ball screw is adopted, and four yaw-type servo mechanisms are evenly and symmetrically arranged on the end cover of the steering gear with an installation section diameter of 80-120mm. The servo system and drive circuit are placed in the gaps of the four yaw-type servo mechanisms, which saves space, facilitates system installation, and is conducive to the layout of the whole bomb, creating favorable conditions for the miniaturization of missiles. The compact structure layout is better than harmonic gear transmission The solution reduces the volume by 40% and the weight by 25%, and solves the problem of miniaturization and light weight of the steering gear. <pb pnum="1" />

The invention discloses an easy-opening and hard-closing rotation shaft, which comprises a rotating shaft and a fixation frame. The rotating shaft is provided with a backstop sheet, a bearing frame, several disk elastic sheets and a nut in order. One end of the rotating shaft is in fixed connection with the fixation frame, and the other end is fastened by the nut. A gear sheet is installed between the bearing frame and the disk elastic sheets on the rotating shaft. By adding a gear sheet and a clamping column, a screen can be prevented from dropping in advance during closing due to weight problem. Thus, the rotation shaft of the invention improves the convenience of laptop operation, and also considers the intrinsic quality and performance of a product.

The invention discloses a video abstract extraction method, a video abstract extraction system, a video abstract extraction device and a storage medium. Different frame image feature extraction algorithms are sequentially used for hierarchical clustering from small to large according to time consumption, frame images needing to be processed are reduced layer by layer, finally, global features areextracted from candidate video abstracts proposed for each obtained segmented video clip, and a final video abstract is generated. Compared with an existing method, the method does not need to consider different feature weight problems, time consumption is greatly reduced, and the method has the advantages of being good in robustness, high in speed and good in effect.

The invention discloses a container declared total weight weighing system which comprises the components of an image acquisition unit, a weighing channel, a container with an RFID label, a remote data platform and an intelligent pushing terminal. The image acquisition unit extracts information of a vehicle which enters the weighing channel and information of the container with the RFID label, and transmits the information to the remote data platform. The weighing channel hoists the container on the vehicle which passes through the channel and performs weighing, and performs feedback of weight information to the remote data platform. The remote data platform transmits the weight information to the intelligent pushing terminal and a national declaring organization. The intelligent pushing terminal is a smart phone or a panel computer or a smart watch. The container declared total weight weighing system can quickly and accurately acquire the container declared total weight, thereby radically setting a weight problem in ship loading and ensuring safe navigation of the ship. The container declared total weight weighing system supplies verified data for cargo weight declaring of importers and exporters by the custom department, thereby greatly improving weighing efficiency and reducing weighing cost.

The invention relates to a preparation method of a light unmanned plane wing with high strength of low density. (1) preparing a magnesium alloy ingot; (2) annealing after machining of the magnesium alloy ingot; (3) carrying out extrusion preparation: respectively heating the magnesium alloy ingot obtained in step (2), a die and an extrusion barrel; (4) extruding the magnesium alloy ingot obtained in step (3) to obtain a profile and dragging, (5) cutting the profile obtained in step (4); (6) machining a product obtained in step (5), then quenching, carrying out aging treatment, and then naturally cooling to room temperature; (7) machining the material obtained in step (6) so as to obtain the required unmanned plane wing. The preparation method is simple in process and easy to implement, can effectively solve the weight problem of the unmanned plane while ensuring the strength of the product, can improve flight efficiency, flight height and safety, and can reduce fuel consumption.

The invention discloses an intelligent safe elevating guardrail comprising two groups of frames, two groups of elevating racks, and a plurality of groups of protection ropes. The elevating racks are slidably connected with the upper ends of the inner sides of the frames, and the protection ropes are connected between the two groups of elevating racks. The bottom parts of the front side surfaces ofthe frames are fixedly provided with first driving motors, the output shafts of which are provided with lower synchronous belt pulleys. The front side surfaces of the frames are fixedly connected with L-shaped installation boards by bolts. The intelligent safe elevating guardrail is advantageous in that the structure is simple, and by adopting the box-shaped structure, the appearance is tidy andnovel, and the elevating racks can carry out the upward and downward elevating motions to realize the opening and the closing of the protection ropes, and therefore the unmanned management of the intermittent releasing places can be solved, the application range is wide, the fault rate is low, the service lifetime is long, the safety performance is high; the guardrail adopts the protection ropes having the flexible structures, and the protection ropes do not droop during the large-span use, and therefore the safety performance is excellent, the weight problem of the rigid connection can be solved, and the dropping problem of the flexible structure can be also solved.

The present invention relates to the fields of power electronics and electric motors, and describes a system for correcting harmonic content in power systems. The invention solves the space and weight problem, associated with the core of an inductor for correcting harmonic content, also providing performance advantages of electric motors, such as higher available voltage at maximum load and higher rotational speed at maximum load. The invention is particularly useful in refrigeration compressors.

The invention discloses a virtual reality device which comprises a front shell, and a mainboard arranged on the inner side of the front shell, wherein the front shell is made of a heat-conducting material; a processing chip and a power management circuit are arranged on the front side of the mainboard; a thermal diffusion membrane is arranged between the inner wall of the front shell and the mainboard; and the thermal diffusion membrane is respectively contacted with the front shell, the processing chip and the power management circuit. With the adoption of a passive heat dissipation manner, the front shell and cooling fins of the virtual reality device are integrated, the front shell is made of the heat-conducting material, the thermal diffusion membrane is arranged between the inner wallof the front shell and the mainboard and contacted with the processing chip and the power management circuit of the mainboard, so that heat generated by operation is rapidly conducted to the front shell and finally dissipated to an external environment, and heat dissipation cooling of the virtual reality device can be realized. Moreover, by taking the front shell as the cooling fins of the virtual reality device, the weight problem brought by added extra cooling fins is solved, the lightweight design is facilitated, and the wearing experience is improved.

The invention discloses a fireworks paper tube. The fireworks paper tube comprises a tube body consisting of multiple bobbins, a base arranged at the lower part of the tube body, and a lead inserted into the base from the bottom of the base; the lead is inserted to form a lead column; one end of single bobbin is opened, and the other end is a bottom seal with a glue layer; the bottom seal is formed by extruding the tube body; adhesive layers are arranged between the adjacent bobbins; the bobbins are connected through the adhesive layers to form the tube body; and a first through hole matched with the lead column is formed in the bottom of the tube body. The fireworks paper tube with the structure saves a mud bottom forming procedure, has no mud bottom to achieve cleanness and solve the fireworks transportation weight problem, can preferably prevent the problems of damping of the mud bottom of an inner tube and breakage of the bottom paper tube, and can preferably guarantee the product quality.

The invention discloses a vertical spinning machine for a tank of a cement tanker, and relates to the spinning machine. The vertical spinning machine for the tank of the cement tanker comprises a rack, wherein spinning devices are uniformly distributed on the side surface of the rack and are up-and-down slidably connected to the side surface of the rack; spinning wheels are slidably connected above the spinning devices through hydraulic rods; the movement directions of the hydraulic rods face the middle of the rack; and a fixing mechanism is connected to the inner side of the rack through rotating a drive mechanism. More welding quality problems for traditional tank manufacturing exist, the flaw detection program is complex, and the overall weight problem is hard to solve. Through spinningmanufacturing, a non-welding process of a tank bottom component can be realized, the overall quality is good, light-weight manufacturing can be realized, the manufacturing cost is reduced, and an effective load is increased. Through spinning manufacturing, a mechanical performance of the tank is improved; and a grain structure of a material is changed through spinning, so that the mechanical strength is improved. The vertical spinning machine for the tank of the cement tanker provided by the invention adopts three vertical type rollers for multi-pass spinning so as to be applicable to spinning workpieces in different sizes; and the rollers are hydraulic driven so as to be sufficient in power and good in spinning effect.

The invention provides a rear seat and belongs to the technical field of auto parts. The utility model solves the problems that the weight of the rear seat of the existing car is small and the disassembly is inconvenient. The rear seat includes a support frame and a seat cushion body. The support frame is frame-shaped, and the support frame is embedded in the seat cushion body. The support frame includes two horizontal tubes and two vertical tubes, and the two vertical tubes are located on two Between the horizontal tubes, there is a mounting tube between the two horizontal tubes, and the two ends of the mounting tube are respectively connected with two vertical tubes, and a positioning plate is set between the mounting tube and the horizontal tube close to the upper end of the support frame. A mounting hole is provided, and a limit rod is provided on the positioning plate. One end of the limit rod is bent to form a fixed part, and the fixed part is set upward. The fixed part passes through the mounting hole and fits on the positioning plate. The other end of the limit rod One end passes through the seat cushion body, and the end is bent to form a hook ring that can be connected with the vehicle frame, and the hook ring is arranged downward. The rear seats can satisfy the lightweight design of the rear seats while improving the strength of the rear seats.

The invention relates to a micro-beam tube tactical optical cable. The micro-beam tube tactical optical cable comprises a double-layer extrusion TPU layer, a flexible foaming material pipe and a micro-beam tube unit, wherein the double-layer extrusion TPU layer comprises a second TPU layer and a first TPU layer which are arranged from outside to inside, a double-layer flexible film layer is arranged between the second TPU layer and the first TPU layer and comprises a second flexible film layer and a first flexible film layer, and multiple strands of aramid yarns are arranged between the secondflexible film layer and the first flexible film layer; the middle of the flexible foaming material pipe is of a hollow structure, and the flexible foaming material pipe is formed by splicing two flexible foaming material units; and the micro-beam tube unit comprises a micro-beam tube and a plurality of coloring optical fibers arranged in the micro-beam tube from outside to inside. The micro-beamtube tactical optical cable has the advantages of stretching resistance, side pressure resistance, wear resistance, lightness and the like, the disadvantages that an existing metal armored tactical optical cable has a weight problem, and the electromagnetic interference resistance of the existing metal armored tactical optical cable is decreased are overcome, and the micro-beam tube tactical optical cable can meet the military field communication and civil communication requirements in thundering areas.

The invention discloses a heavy-duty truck roof assembly structure with a rotating sunroof device, which belongs to the technical field of vehicles and aims to solve the problems that the sunroof on the existing heavy-duty truck cannot be opened and rotated in all directions, and the sunroof cannot be installed with a function expansion module. A heavy-duty truck roof assembly structure with a rotating sunroof device, including a rotating sunroof device and a roof assembly, wherein the rotating sunroof device includes a fixed ring, an upper moving ring, a lower moving ring, a ball, a cover plate, and a positioning circlip , positioning bracket; solve the requirement of multifunctional sunroof device, and the problem that heavy trucks cannot install the rotating sunroof with a weight of 20-100kg; at the same time, the sunroof of the present invention is safe and reliable to use; the limit is flexible and convenient.

The invention relates to an efficient energy-saving environment-friendly resin plate for a diamond wire cutting silicon wafer. The resin plate is fixed to one side of a silicon ingot needed to be cut;the filler of the resin plate is glass fiber powder; the density of the resin plate is 0.6g/cm<3> when the thickness of the resin plate is controlled at 25mm by adding the glass fiber powder; at least two through holes are formed in the middle of the resin plate along the thickness direction of the resin plate, and the through holes are uniformly distributed in a spaced manner. According to the efficient energy-saving environment-friendly resin plate for the diamond wire cutting silicon wafer provided by the invention, the cutting efficiency can be improved, the processing efficiency of silicon wafer slicing time is improved, and the utilization ratio of equipment is improved; the use level of degumming and washing water is reduced; the weight of the integral resin plate is reduced, the light weight problem for treatment of the resin plate as a waste is solved, and the resin plate plays roles of being energy-saving and environment-friendly.

The invention discloses a pair of ventilating high-heeled shoes convenient to wear. Each shoe comprises a high-heeled shoe upper body and a heel, and is characterized in that the heel is provided with a transverse long-striped channel; the through hole is internally provided with a spring for connecting the high-heeled shoe upper body with the heel; the bottom of the high-heeled shoe upper body is provided with an insole; the insole is provided with a high-low bulge; the outer surface of the high-heeled shoe upper body is provided with a plurality of transverse strips; the transverse strips are provided with ventilating grids; and a zip fastener is arranged at one side of the heel of the high-heeled shoe upper body. The ventilating high-heeled shoes convenient to wear have the advantages that the heel is internally provided with the through hole, so that the weight problem of the high-heeled shoes is solved, and the pain feeling is reduced in a walking process due to the fact that the elasticity of the shoes is better; and the ventilating grids of the high-heeled shoe upper body increase the ventilation of the shoes and the comfortable feeling of the shoes is increased.