14results about How to "Avoid weight" patented technology

The application discloses a low-vibration active phase modulation composite pulse tube Stirling cryogenic refrigerator and belongs to the technical field of cryogenic refrigerators. The composite refrigerator cold finger integrates a first Stirling component as a high-temperature stage and a second pulse tube component as a low-temperature stage. The innovation is that the phase modulation unit of the second pulse tube component is composed of a second inertia tube wound and fixed in the inner circle of the gas reservoir, and the gas reservoir is integrally connected to the first cold end heat exchanger to improve the system efficiency through low-temperature arrangement. At the same time, the motion state of the compressor piston and the first displacer is monitored and cooperatively controlled in real time through the compressor displacement sensor and the cold finger displacement sensor, active and accurate phase modulation is realized, and the active vibration damper is used to perform reverse compensation according to the motion feedback of the first displacer to significantly offset the vibration output of the whole machine. The application realizes the unity of high efficiency, low vibration and high reliability, and is particularly suitable for vibration-sensitive space exploration and other application scenarios.

This utility model relates to the field of aluminum honeycomb panel technology and discloses a deformation-resistant support structure for lightweight aluminum honeycomb panels, including an upper aluminum plate and a lower aluminum plate. Both the upper and lower aluminum plates have slots, and clamping plates are fixed to the side walls of both plates. An upper cavity is formed in the upper aluminum plate, and a lower cavity is formed in the lower aluminum plate. A transverse support strip is installed in the lower cavity, and a longitudinal support strip is installed in the upper cavity. An upper placement groove is formed in the upper aluminum plate, and a lower placement groove is formed in the lower aluminum plate. An aluminum honeycomb core panel is clamped into the upper and lower placement grooves. This utility model eliminates the need to increase core density to improve strength, effectively controlling material usage and avoiding the weight and cost increases caused by core densification. Furthermore, it eliminates the need to increase aluminum plate thickness to enhance splicing strength, avoiding damage to the aluminum plate structure from openings and preventing weight increases caused by thickening the aluminum plate or adding fasteners.

This invention discloses a coupling and separation network for composite signal transmission, relating to the field of composite signal transmission. The coupling and separation network includes: a boost module for boosting an AC drive signal; a drive transmission module for transmitting the boosted AC drive signal and outputting it to a parallel resonant module via a cable; and a parallel resonant module for ensuring that the voltage and current on the coaxial cable are in phase. The boost module is connected to the drive transmission module, which in turn is connected to both the parallel resonant module and the boost module. This coupling and separation network drives three types of signals. Compared with existing technologies, the advantages of this invention are: it avoids the problems of relay mechanical reliability and transient interference caused by switching during composite signal transmission, and it utilizes a transducer-matched inductor to achieve high-voltage, high-power, low-frequency signal filtering, avoiding the size and weight costs associated with additional components.

The utility model discloses a long endurance and easily deploy data acquisition house, including bottom plate, the edge side fixed mounting of bottom plate top has the protection wallboard, the front side and rear side of protection wallboard top all have seted up solar panel limiting slot, the utility model relates to sensor data acquisition technical field. The long endurance and easily deploy data acquisition house, through the installation lithium cell with the utilization battery compartment connecting table, and install polycrystalline solar panel for lithium cell power supply, not only reduced the installation quantity of battery and alleviated the weight of whole, and this power supply mode greatly increased the endurance, very large extent solved the problem of short endurance, and in the battery compartment main part and the periphery and bottom of inductor deposit storehouse, utilize the protection wallboard and close, prevent the influence protection inductive component and the normal operation of battery of the aging and humid environment that solar exposure brings.

This application belongs to the field of wind turbine technology, and particularly relates to a foldable horizontal blade device for wind turbines, including a rotating hinge base. The rotating hinge base includes a vertical shaft, on which multiple hinge seats are arranged. All the hinge seats are evenly arranged around the central axis of the vertical shaft. Blades are provided on the hinge seats and hinged to the hinge seats. A column is provided at the upper end of the rotating hinge base, and a fixed pulley group is provided at the upper end of the column. A rope winding and unwinding device is provided inside the column. A lifting rope is provided on the drive rod of the rope winding and unwinding device. The lifting rope passes through the fixed pulleys on the fixed pulley group and is connected to the blade. This application uses the connection between the blade and the rotating hinge base as the fulcrum, and uses the rope winding and unwinding device and the lifting rope to lift the blade, so that the blade can overcome its own weight and the blade length can be made longer. The angle between the blade and the horizontal plane can be changed, so as to enhance the wind energy capture capability.

This invention relates to the field of composite material technology, specifically to an aramid honeycomb based on magnetic microwave absorbing prepreg and its preparation method. The aramid honeycomb includes an aramid honeycomb core and a magnetic microwave absorbing prepreg layer covering the surface of the honeycomb core. The magnetic microwave absorbing prepreg, by mass percentage, contains 25%-30% magnetic microwave absorbing component, 40%-45% resin matrix, 20%-25% reinforcing fiber, 5%-8% dispersant (based on the magnetic microwave absorbing component), and a curing agent with a mass ratio of 1:1.2 to the resin matrix. The magnetic microwave absorbing component is selected from one or more of coated Fe3O4@SiO2 nanoparticles, nickel-doped MXene (Ni-Ti3C2), and ultrafine Fe-Si-Cr alloy powder, mixed in any proportion. The resin matrix is ​​E-51 modified epoxy resin with a glass transition temperature Tg ≥ 120℃; the reinforcing fiber is para-aramid fiber cloth (Kevlar49) with a length of 0.15 micrometers to 0.5 millimeters; the dispersant is polyetherimide (PEI); and the curing agent is methyltetrahydrophthalic anhydride (MeTHPA).

The utility model discloses a quadruped robot wheel foot cover tire, which is in a circular ring shape and comprises a mounting area, a tire cover and a tire cover, and is characterized in that the mounting area is used for connecting a quadruped robot wheel hub; the buffer area is provided with a hollow part, and the hollow part extends inwards from the outer side face in the width direction of the outer tire; the action area can be in contact with the ground, and anti-skid ribs are formed in a circle in the circumferential direction; the mounting area, the buffer area and the action area are sequentially arranged outwards in the radial direction from the center of the outer tire and are concentric and coaxial. The utility model further discloses a quadruped robot wheel foot. Due to the arrangement of the hollow parts in the buffer area, the weight of the outer tire is reduced, vibration generated by the outer tire can be effectively absorbed, and the movement stability of the quadruped robot is high due to the overall structure; the mounting area, the buffering area and the acting area are sequentially and concentrically arranged from inside to outside, the stability of the hub in the circumferential direction in the movement process is guaranteed, and deviation and even slipping are avoided.

The invention provides a cargo hold stowage balancing method for a large-scale transportation and delivery unmanned aerial vehicle, which comprises the following steps: receiving a transportation and delivery task instruction, and determining the total weight of cargoes and the quantity of packaging units; the total cargo weight and the number of the packaging units are both smaller than the limit value of the cargo hold of the unmanned aerial vehicle; traversing to generate a plurality of stowage schemes conforming to the load constraint, and screening to generate a stowage scheme set for loading the gravity center envelope; based on a predetermined optimization factor, establishing an efficiency evaluation equation, and determining N groups of candidate stowage schemes from the stowage scheme set; based on a group of fixed air-drop time sequences, determining a stowage scheme which conforms to an air-drop gravity center envelope and has a minimum gravity center dynamic change range from N groups of candidate stowage schemes; and generating stowage information of each packaging unit based on the determined stowage scheme. According to the method, the cargo hold balance control operation method is greatly simplified, the operation and maintenance cost of a user is remarkably reduced, the situation that balance weights are additionally increased due to cargo unbalance loading can be avoided, and the optimal stowage balance scheme can be efficiently and reasonably output.

The utility model provides an automatic climbing device for a column type pier. The automatic climbing device comprises a climbing frame, a hydraulic driving system and a working platform, the climbing frame is composed of an upper hoop and a lower hoop which can be opened and closed, and the hydraulic driving system is used for connecting the upper hoop and the lower hoop and driving the upper hoop and the lower hoop to alternately lock a pier and climb along the pier; the working platform is fixedly arranged at the bottom of the lower hoop and is used for bearing construction equipment and personnel; locking devices are arranged at the opening positions of the upper hoop and the lower hoop. The device is applied to column type pier capping beam construction, the overhead working risk can be reduced through ground installation, the construction efficiency is improved, and the construction safety is improved through the scheme of the upper hoop, the lower hoop and the pressure sensor.

The utility model relates to the technical field of metering scales, in particular to an accurate metering scale, which comprises a metering scale body, a first placing tray is fixedly connected to the middle of the upper surface of the metering scale body, a weighing cup is placed on the surface of the first placing tray, and a tablet computer is arranged on the upper side of the metering scale body. A material identification module is arranged on the side face of the metering scale body and comprises a discharging plate, a second containing disc, a material cup, a label, a supporting block and a code scanner. The tablet personal computer is used for displaying types, numbers and needed weights of all materials needed in the material warehouse, then an operator grabs the materials according to given material information, scans labels through the code scanner to identify and verify the material information, and feeds back the weighed weight to the tablet personal computer to be verified after the weighed weight is accurate, and through double verification, the efficiency is greatly improved. The accuracy of material weighing is effectively improved, the problem that an operator takes wrong materials or has weight deviation is avoided, and the quality of perfume products is effectively improved.

A mower including a mower unit (8); a grass collector (10) configured to store mown grass; a guide duct extending from the mower unit (8) to the grass collector (10) and configured to guide grass mown by the mower unit (8) to the grass collector (10); and a fullness detector (20) configured to detect that the grass collector (10) has become full of mown grass, the fullness detector (20) including: a receiver (21) configured to be pressed toward a first side by mown grass in contact with the receiver (21); an urging member (22) urging the receiver (21) toward a second side opposite to the first side; a weight (23) to adjust a swing sensitivity of the receiver (21) to a press by mown grass; and a detection sensor (24) configured to detect that the receiver (21) has been pressed by mown grass.

The invention relates to an intelligent tent fabric with a self-adaptive active anti-condensation function and a preparation method thereof. The technical key points are as follows: the fabric comprises outer-layer base cloth, a patterned conductive heating layer arranged on the inner side of the outer-layer base cloth, a waterproof moisture-permeable insulating layer arranged on the inner side of the conductive heating layer, and an intelligent control unit connected with the patterned conductive heating layer, the intelligent control unit comprises a humidity sensor used for detecting environment humidity and a controller used for controlling the conductive heating layer according to humidity signals. The problem of moisture condensation on the inner surface of the tent fabric in the high-humidity environment is solved, compared with an existing product, humidity in a tent can be sensed in real time, the heating function can be automatically started, the situation that the temperature of the inner surface of the fabric is lower than the dew point is avoided, moisture condensation on the inner surface of the fabric is actively prevented, and the fabric has excellent heat preservation, water resistance and moisture permeability; the method accords with the current intelligent and lightweight development trend, and is safe, reliable and good in process compatibility.

The utility model relates to the field of electric shovels, in particular to an electric shovel bucket opening chain connecting device which comprises a bucket, a bottom opening bucket rotationally mounted on the inner wall of the bucket, an iron chain connected with the bottom opening bucket and a mounting mechanism arranged on the face, away from the bucket, of the bottom opening bucket. The connecting mechanism is used for connecting the iron chain and the mounting mechanism; the mounting mechanism comprises a mounting rod arranged on the bottom open hopper, a mounting block connected with the mounting rod, a sliding block arranged in the mounting block and a force application mechanism arranged between the sliding block and the mounting block. The electric shovel has the effects of reducing abrasion of the electric shovel and saving the maintenance cost.

The utility model discloses an integrated multistage shunting cooling plate which comprises a pipe nozzle, flat pipes and a plurality of collecting pipes, the upper collecting pipe is communicated with the lower collecting pipe through the flat pipes, after heat conducting structural adhesive is added on the flat pipes, a double-layer battery cell can be cooled, compared with a cold plate, a temperature equalizing plate is omitted, the weight is reduced by 3kg, the flat pipes are arranged in parallel, and the heat conducting structural adhesive is added on the flat pipes. An inlet and an outlet are formed in the pipe nozzle, the axis of the inlet and the axis of the outlet are parallel, the inlet and the outlet are integrated on the pipe nozzle on the same side, sealing rings are arranged on the inlet and the outlet respectively, the sealing performance of connection with a system pipeline is guaranteed through the design of the sealing rings on the pipe nozzle, the inlet and the outlet are integrated on the same pipe nozzle, and the structure is optimized. According to the cooling plate structure, the cooling uniformity is improved, the structural integration degree is enhanced, the whole plate is light, and the efficiency and adaptability of a power battery thermal management system are remarkably improved.