12results about How to "Reduced effect" patented technology

The invention discloses a lifting hook control method and a lifting device. Before a lifting hook is lowered, whether the pulling force of the lifting hook on a pull rope is larger than the self weight of the pull rope or not is judged; when the pulling force of the lifting hook to the pull rope is not greater than the self weight of the pull rope, the lifting hook cannot be lowered by virtue of the self weight, and at the moment, the friction wheel winch is controlled to drive the friction wheel group to release the pull rope and the winch is controlled to release the pull rope, so that the load of the pull rope between the winch and the friction wheel winch can act on the friction wheel winch; the load transmitted to the rope outlet end of the friction wheel set after the pull rope passes through the friction wheel set is attenuated, so that the dead weight of the pull rope between the friction wheel set and the lifting hook is smaller than the pulling force of the lifting hook on the pull rope, the lifting hook can pull the pull rope through the dead weight, the winch releases the pull rope according to the preset speed, and then the lifting hook is lowered.

The invention relates to the technical field of diaphragm pumps, in particular to a high-temperature-resistant single-runner diaphragm chamber which comprises a cooling pipe section, a diaphragm cavity and a diaphragm chamber gland installed on the diaphragm cavity, a diaphragm chamber is formed between the diaphragm chamber gland and the diaphragm cavity, and the two ends of the cooling pipe section are a high-temperature slurry end and a low-temperature slurry end respectively. The diaphragm cavity is provided with a feeding hole through which cooled slurry can enter or flow out of the diaphragm chamber from the bottom of the diaphragm chamber, the low-temperature slurry end is communicated to the feeding hole in the diaphragm chamber, and the high-temperature slurry end is used for receiving uncooled slurry; according to the diaphragm pump, on the premise that the form of the high-temperature slurry is not changed, direct pumping of the high-temperature and strong-corrosion slurry can be achieved, meanwhile, the effect of the high-temperature and strong-corrosion slurry on the diaphragm is effectively reduced, it is avoided that the diaphragm rapidly loses efficacy due to overtemperature and corrosion, and it is guaranteed that the diaphragm pump stably operates for a long time under the high-temperature and strong-corrosion working condition.

Embodiments of the present application provide a scoring function construction method for semantic retrieval and related devices. The method comprises: obtaining a text library text and a query text; performing word segmentation on the text library text and the query text to obtain a first term set and a second term set, and obtaining a weight value of each term in the first term set; inputting the first term set and the second term set into a pre-trained BERT model to obtain a first term vector set and a second term vector set; determining a retrieval score according to a third term set, the weight value, the first term vector set and the second term vector set; and determining a scoring function according to a first compressed vector, a second compressed vector and the retrieval score. In this way, a model modeling and training process for semantic retrieval is formulated, so that the retrieval effect of a multi-document semantic retrieval task can be significantly improved, mainly in terms of retrieval efficiency and retrieval accuracy.

The application provides a method for reducing the transverse strip difference of silicon steel products, comprising the following steps: S1, increasing the original roll crown of a cold rolling silicon steel rolling mill; S2, moving the upper and lower intermediate rolls of the cold rolling silicon steel rolling mill, and determining the position of the axial movement of the upper and lower intermediate rolls according to the width of the strip steel; S3, adjusting the bending roll of the cold rolling silicon steel rolling mill according to the rolling reduction rate, increasing the positive bending extension of the bending roll of the cold rolling silicon steel rolling mill; S4, increasing the total reduction rate of the cold rolling silicon steel rolling mill; S5, increasing the strip tension of the cold rolling silicon steel rolling mill; S6, reducing the strip difference of the cold rolling strip steel and improving the strip shape at the same time. The transverse strip difference of the silicon steel cold rolling strip steel can be reduced to 0.0048-0.0051, which meets the requirements of the manufacturers of motors, transformers and the like on the transverse strip difference of the silicon steel products.

The utility model provides a clothes washing equipment tractor installation structure and clothes washing equipment, the tractor installation structure comprises a barrel body, a deceleration clutch, a tractor and an installation support, the barrel body is provided with a barrel bottom wall, the installation support is connected with the barrel bottom wall, the central axis of the barrel body is marked as L, the tractor is detachably connected with the mounting bracket, and the connecting direction of the tractor and the mounting bracket is parallel to L; relative displacement between the tractor motor output shaft (together with the tractor motor rotor) and other parts of the tractor can be effectively avoided, so that collision and friction probability and acting force between the parts are reduced, noise at the tractor can be effectively reduced in the running process of the laundry equipment, and the service life of the laundry equipment is prolonged. And the use experience of the user is improved.

The present application belongs to the technical field of sealing well of precipitation well, and discloses a sealing well method of precipitation well, which utilizes a sealing member to isolate the upper and lower well pipes, realizes feeding and filling in the lower well pipe of the sealing member, pressure cement slurry filling in the upper well pipe of the sealing member, and waterproof material is used to strengthen waterproof, and then fine stone concrete or grouting material is poured, and after the sealing plate is closed, a rigid water stop wing ring is arranged inside, and fine stone concrete is poured to form multiple waterproof measures; the sealing member is used to feed and fill the well pipe, which can weaken the effect of groundwater to the greatest extent, and avoids the problems of cement and fine material return caused by groundwater flushing in the prior art. The present application is suitable for sealing well of precipitation well under complex conditions of rich groundwater and high water pressure, and has the advantages of fast sealing well effect, small work load, short cycle, no influence on the surrounding environment, no influence on the safety of underground building structure, flexible and convenient operation, and saved construction period and cost.

The invention relates to a vehicle underwater driving auxiliary adjusting device and system, a control method and a vehicle. The auxiliary adjusting device for the vehicle running in the water comprises a flow guide plate located between a wheel cover and a wheel of the vehicle; and the driving mechanism is in transmission connection with the flow guide plate, is used for driving the flow guide plate to be switched to a folded state and an extended state, and can be used for adjusting the size of an included angle between the flow guide plate in the extended state and the axis of the vehicle wheel. Through flexible switching of different states and angles, lifting force and propulsive force generated by rotation of wheels can be adjusted in a targeted mode, and the problems that in the prior art, lifting force and propulsive force of a wheel-type amphibious vehicle are difficult to optimize, so that resistance is large when the vehicle sails in water at a high speed, and flexibility of posture adjustment is insufficient are effectively solved. The speed increase and the navigation attitude stability are both considered when the vehicle travels in water, and the comprehensive use performance of the vehicle in water is remarkably improved.

The present application relates to the technical field of seeding equipment, and discloses an air-suction seed metering device for large-diameter seeds; a seed metering disc is installed in a seed metering shell and divides the seed metering shell into an air chamber and a seed area; the seed metering disc is connected to a driving mechanism; a negative pressure mechanism is connected to one end of the air chamber along the seed metering shell; the negative pressure mechanism is used to generate negative pressure in the air chamber; the driving mechanism is used to drive the seed metering disc to rotate; when the seed metering disc rotates to the area of the air chamber, the negative pressure is connected to the seed area; when the seed metering disc rotates to the area other than the air chamber, the negative pressure is disconnected; the present application can facilitate accurate positioning and seeding of large-diameter seeds; by changing the on-off of the negative pressure, effective adsorption of the large-diameter seeds and fixed-position seeding are realized, and seed cleaning is performed in the process, which ensures the flowability of the large-diameter seeds, avoids seed accumulation and arching, reduces the collision and force between the seeds, improves the seed filling efficiency, further ensures the germination rate and survival rate of the large-diameter seeds, and is high in seeding efficiency and low in labor cost.

The application discloses a kind of solventization electron initiation controlled radical polymerization method of cosolvent regulation, this polymerization method uses higher polymerization temperature and adds cosolvent tetrahydrofuran simultaneously to regulate, solventization electron initiation polymerization still can keep the nature of controlled radical polymerization, can prepare molecular weight precision controllable, narrow molecular weight distribution polymer, and accurate structure block, star and various topological structure polymers such as polymer.The solventization electron initiation controlled radical polymerization method of cosolvent regulation of the application, it includes the following steps: in the solventization electron initiation polymerization system of alkali metal lithium / hexamethylphosphoramide to olefin monomer, adding cosolvent, carrying out controlled radical polymerization, improve polymerization rate and obtain narrow molecular weight distribution polymer;Wherein, the cosolvent is tetrahydrofuran, the dosage of hexamethylphosphoramide is 20mL, the dosage of tetrahydrofuran is 3-6mL, and the polymerization temperature is 50-60 DEG C.

A humanoid robot arm gripper structure includes a mounting base, a power unit, a lifting device, and two gripping mechanisms symmetrically mounted on the mounting base. The mounting base has an inner cavity, and the lifting device is mounted within this cavity. The power unit is connected to the lifting device for driving its lifting motion. The gripping structure includes a first rod, a second rod, and a third rod. One end of the first rod has a first hinge and a second hinge. The first hinge is hinged to the lifting device, and the second hinge is hinged to the mounting base. The second hinge of the first rod is also connected to the mounting base, reducing the reaction force transmitted to the first hinge and thus ensuring the stability of the lifting device. Excessive pressure will prevent the lifting device from shaking, thus maintaining its stability.

This invention discloses a weather-resistant enhanced 1kV overhead insulated conductor, relating to the field of power cable technology. Several outer and inner air tubes are connected between two main air boxes located on the same axis. A rubber bladder is embedded between the outer and inner air tubes, and the rubber bladder is filled with microcapsule particles. Two pressure-resistant arc plates are embedded inside the pressure-resistant cavity. A torsion tube is connected between two adjacent pressure-resistant arc plates via two elastic arc plates. Torsion springs are connected between several adjacent torsion tubes. In this invention's pressure-resistant and cold-resistant components, the cable's flexibility is ensured when laying cables in low-temperature weather. In areas with large temperature differences, the cable's temperature change is more stable, preventing prolonged overheating or underheating. In the de-icing and heat dissipation components, the cable temperature is prevented from becoming too high in high-temperature weather and from icing in snowy weather. The two components work together to enhance the cable's weather resistance and improve its performance.

This invention relates to the field of power cable technology and proposes a high-strength copper core cross-linked polyethylene insulated overhead power cable, comprising a conductor, a shielding layer, a cross-linked polyethylene insulation layer, and a sheathing layer. The conductor is composed of several stranded wires. The shielding layer covers the outside of the conductor, the cross-linked polyethylene insulation layer covers the outside of the shielding layer, and the sheathing layer covers the outside of the cross-linked polyethylene insulation layer. It also includes a tensile layer, positioning components, tensile components, and current-disrupting components. A tensile layer is provided between the cross-linked polyethylene insulation layer and the sheathing layer. Several positioning components are evenly spaced outside the sheathing layer. A tensile component is provided between every two positioning components. A current-disrupting component is installed on the tensile component. This technical solution solves the problem in the prior art where cables are prone to galloping due to weather conditions, which can easily lead to cable damage due to vibration or excessive tension, thus affecting the stability of the power system operation.