摘要：【中文】本发明属于软磁材料技术领域，具体涉及一种磁导率为125的铁镍软磁粉芯制备方法，包括步骤铁镍粉末配粉、绝缘包覆、压制成型、热处理和表面涂装；所述铁镍粉末配粉包括将铁镍粉末分筛成小于60μm、大于等于60μm且小于125μm、大于等于125μm三种粒径，按40％：30％：30％的比例混合均匀。本发明采用的是气雾化铁镍粉末，通过粒度配比、绝缘包覆、压制成型以及表面喷涂等工序来制备导磁率为125的铁镍金属软磁粉芯，采用本方法制得的铁镍磁芯损耗低，直流偏置性能好。 【EN】The invention belongs to the technical field of soft magnetic materials, and particularly relates to a preparation method of an iron-nickel soft magnetic powder core with the magnetic conductivity of 125, which comprises the steps of iron-nickel powder preparation, insulation coating, press forming, heat treatment and surface coating; the iron-nickel powder preparation method comprises the following steps of screening iron-nickel powder into three particle sizes of less than 60 mu m, more than or equal to 60 mu m, less than 125 mu m and more than or equal to 125 mu m according to a proportion of 40%: 30%: mixing at a ratio of 30%. The invention adopts gas atomization iron-nickel powder, and prepares the iron-nickel metal soft magnetic powder core with the magnetic permeability of 125 through the procedures of granularity proportioning, insulation coating, press forming, surface spraying and the like.

摘要：【中文】本发明公开了一种智能组合式大功率电子负载，包括控制器、显示屏、输入按键、DA转换电路、电压采样电路、接触器、功率模块等。所述控制器与输入按键、显示屏、电压采样电路、DA转换电路连接。所述接触器的输入端与负载电源的输出端连接，控制端与控制器连接，接触器输出端与电压采样电路输入端连接。所述电压采样电路的输出端分别连接控制器和功率模块。所述功率模块有多个功率单元组成，并且功率模块具备通讯功能，与控制器通过RS485进行通讯。本发明能够模拟多种负载状态，功率可以进行扩展，操作简单方便。 【EN】The invention discloses an intelligent combined type high-power electronic load which comprises a controller, a display screen, an input key, a DA conversion circuit, a voltage sampling circuit, a contactor, a power module and the like. The controller is connected with the input key, the display screen, the voltage sampling circuit and the DA conversion circuit. The input end of the contactor is connected with the output end of the load power supply, the control end of the contactor is connected with the controller, and the output end of the contactor is connected with the input end of the voltage sampling circuit. And the output end of the voltage sampling circuit is respectively connected with the controller and the power module. The power module is composed of a plurality of power units, has a communication function and is communicated with the controller through RS 485. The invention can simulate various load states, the power can be expanded, and the operation is simple and convenient.

摘要：【中文】一种水下隔声结构单元，它涉及减振降噪领域，具体涉及一种水下隔声结构。本发明的目的是提供一种水下隔声频带宽、效果好、参数设计性强的水隔声结构。水下隔声结构单元包括上盖板、下盖板以及弹性元件。理论计算表明，上、下盖板为边长0.2米的正方形、水下隔声结构单元总弹性系数为2.7×10⁷N/m时，频率大于1kHz的隔声量均显著大于15dB，而将其置于水下100m在静水压作用下弹簧仅会产生1.48mm的压缩量。本发明具有结构简单，隔声效果易于控制的优点。 【EN】An underwater sound insulation structure unit relates to the field of vibration and noise reduction, in particular to an underwater sound insulation structure. The invention aims to provide a water sound insulation structure which is wide in underwater sound insulation frequency band, good in effect and strong in parameter design. The underwater sound insulation structure unit comprises an upper cover plate, a lower cover plate and an elastic element. Theoretical calculation shows that the total elastic coefficient of the underwater sound insulation structure unit with the upper cover plate and the lower cover plate being square with the side length of 0.2m is 2.7 multiplied by 10⁷At N/m, the sound insulation quantity with the frequency of more than 1kHz is obviously more than 15dB, and the spring can only generate 1.48mm of compression quantity under the action of hydrostatic pressure when the spring is placed under water at 100 m. The invention has the advantages of simple structure and easy control of sound insulation effect.

摘要：【中文】本发明公开了一种汽车维修用升降装置，包括顶板和底座，所述底座顶面固定安装有多个对称分布的液压缸，所述液压缸的输出端均连接有同一个操作板，所述滑座上端均固定安装有顶盘，所述操作板固定安装有两个双轴电机，所述螺纹杆靠近双轴电机的一端分别与双轴电机的左、右输出端连接，所述电机的输出端通过转轴同轴设置双盘升降轮，所述顶板侧壁上左右对称通过转轴设置有导向轮，所述双盘升降轮分别与左右两侧的导向轮连接设置有拉线，所述拉线下端连接有小安装板，所述小安装板底面均固定安装有挂钩，本发明由于同时采用悬挂升降和一般支架进行抬升，避免造成在升降过程中产生晃动或者造成维修过程不稳定，甚至造成二次损伤等问题。 【EN】The invention discloses a lifting device for automobile maintenance, which comprises a top plate and a base, wherein a plurality of symmetrically distributed hydraulic cylinders are fixedly arranged on the top surface of the base, the output ends of the hydraulic cylinders are connected with the same operating plate, a top plate is fixedly arranged at the upper end of a sliding seat, two double-shaft motors are fixedly arranged on the operating plate, one ends of threaded rods close to the double-shaft motors are respectively connected with the left output end and the right output end of the double-shaft motors, the output ends of the motors are coaxially provided with double-plate lifting wheels through rotating shafts, the side wall of the top plate is symmetrically provided with guide wheels through rotating shafts, the double-plate lifting wheels are respectively connected with the guide wheels at the left side and the right side and provided with pull wires, the lower ends of the pull wires are connected with small mounting plates, and the bottom surfaces of the small mounting plates are respectively and fixedly provided with hooks, because the lifting device simultaneously, even causing secondary damage and the like.

摘要：【中文】本发明涉及一种非原纤化Lyocell纤维的制备方法。所述方法包括湿纤维浸入交联溶液中，所述交联溶液为交联剂和助剂的混合溶液；取出纤维，轧制纤维，微波催化纤维，得到非原纤化纤维；所述湿纤维为未经干燥的纤维。交联剂为三嗪类化合物，助剂为碱性化合物。微波功率不低于100W。通过本发明的方法得到的Lyocell纤维具有较好的强度、伸长率等性能指标的同时具有较佳的抗原纤化特性，湿磨损次数高达2600次。 【EN】The invention relates to a preparation method of non-fibrillated Lyocell fiber. The method comprises the steps that wet fibers are immersed into a crosslinking solution, and the crosslinking solution is a mixed solution of a crosslinking agent and an auxiliary agent; taking out the fiber, rolling the fiber, and catalyzing the fiber by microwave to obtain non-fibrillating fiber; the wet fibers are undried fibers. The cross-linking agent is a triazine compound, and the auxiliary agent is an alkaline compound. The microwave power is not lower than 100W. The Lyocell fiber obtained by the method has good performance indexes such as strength, elongation and the like, and simultaneously has good fibrillation resistance, and the wet abrasion frequency is as high as 2600 times.

摘要：【中文】本发明公开了一种基于主辐射模态的水下圆柱壳低频声辐射预报方法。步骤1：建立圆柱壳有限元模型，计算各阶模态位移振型；步骤2：计算单位系数时每阶模态的水下辐射声功率；步骤3：进行受激振动声辐射预计算；步骤4：进行各阶模态对总辐射声功率的贡献程度分析，识别出各频段上的主辐射模态；步骤5：基于实测振动数据获得最低频段主辐射模态的模态系数；步骤6：基于实测振动数据获得其它频段主辐射模态的模态系数；步骤7：计算得到各阶主辐射模态的辐射声功率；步骤8：将各阶主辐射模态叠加得到总辐射声功率，实现辐射声功率的快递预报。本发明利用少量振动监测点，简单的步骤，可比较准确、快速的预报水下圆柱壳低频辐射声功率。 【EN】The invention discloses a prediction method of underwater cylindrical shell low-frequency sound radiation based on a main radiation mode. Step 1: establishing a cylindrical shell finite element model, and calculating modal displacement vibration modes of all orders; step 2: calculating the underwater radiation sound power of each order of mode when the unit coefficient is calculated; and step 3: performing stimulated vibration acoustic radiation pre-calculation; and 4, step 4: analyzing the contribution degree of each order of mode to the total radiated sound power, and identifying the main radiation mode on each frequency band; and 5: obtaining a modal coefficient of a main radiation mode of a lowest frequency band based on the actually measured vibration data; step 6: obtaining modal coefficients of main radiation modes of other frequency bands based on the actually measured vibration data; and 7: calculating to obtain the radiation sound power of each order of main radiation mode; and 8: and superposing the main radiation modes of all orders to obtain the total radiation sound power, thereby realizing the express forecast of the radiation sound power. The method utilizes a small number of vibration monitoring points, has simple steps, and can accurately and quickly forecast the low-frequency radiation acoustic power of the underwater cylindrical shell.

摘要：【中文】本发明提供了一种基于微射流技术的减阻运动头盔及其制造方法，涉及运动装备技术领域，解决了现有的运动头盔通过气动外形优化来降低风阻的继续提升空间不大，在运动姿态调整的高速运动中减阻效果也较为有限的技术问题。该减阻运动头盔包括头盔本体；所述头盔本体的后部设置有多个微射流孔；所述微射流孔贯通所述头盔本体并均匀分布；所述微射流孔包括第一微射流孔和第二微射流孔；所述第一微射流孔位于所述头盔本体的对称线上；所述第二微射流孔均匀分布于所述对称线的两侧。本发明现有的运动头盔通过气动外形优化来降低风阻方式，降低空气阻力的效果更明显，尤其适用于在运动姿态调整的高速运动中降低空气阻力。 【EN】The invention provides a drag reduction sports helmet based on a micro-jet technology and a manufacturing method thereof, relates to the technical field of sports equipment, and solves the technical problems that the existing sports helmet has small continuous lifting space for reducing wind resistance through pneumatic appearance optimization, and has relatively limited drag reduction effect in high-speed movement for adjusting sports postures. The anti-drag sports helmet comprises a helmet body; the rear part of the helmet body is provided with a plurality of micro-jet holes; the micro jet holes penetrate through the helmet body and are uniformly distributed; the micro-fluidic holes comprise a first micro-fluidic hole and a second micro-fluidic hole; the first micro-jet hole is positioned on a symmetry line of the helmet body; the second micro-jet holes are uniformly distributed on two sides of the symmetry line. The existing sports helmet reduces the wind resistance mode through the optimization of the pneumatic appearance, has more obvious effect of reducing the air resistance, and is particularly suitable for reducing the air resistance in the high-speed movement of adjusting the movement posture.

摘要：【中文】本发明提供了一种基于微扰流流动控制技术的低风阻运动头盔，涉及运动装备技术领域，解决了现有技术中存在的运动头盔在佩戴者高速运动过程中的风阻较大，佩戴者需要消耗更多的体力才能保持高速前行的技术问题。该低风阻运动头盔包括头盔本体；所述头盔本体的后上部设置有至少一个凹坑，多个所述凹坑均匀分布。本发明在头盔的后上部设置至少一个凹坑，基于微扰流流动控制技术，多个凹坑均匀分布后，头盔本体后部的气流更加平滑，能够进一步减少尾流的范围，进一步增大空气对头盔本体的浮动作用，从而提高了减小风阻的效果，也让运动头盔变得更加轻盈稳定，外观设计更加时尚、科学。 【EN】The invention provides a low-wind-resistance sports helmet based on a micro-turbulent flow control technology, relates to the technical field of sports equipment, and solves the technical problem that in the prior art, a sports helmet has large wind resistance in the high-speed movement process of a wearer, and the wearer needs to consume more physical power to keep going ahead at a high speed. The low wind resistance sports helmet comprises a helmet body; the back upper portion of helmet body is provided with at least one pit, a plurality of the pit evenly distributed. According to the invention, the at least one pit is arranged on the rear upper part of the helmet, and based on the micro-turbulent flow control technology, after the pits are uniformly distributed, the airflow at the rear part of the helmet body is smoother, the range of wake flow can be further reduced, and the floating effect of air on the helmet body is further increased, so that the effect of reducing the wind resistance is improved, the sports helmet is lighter and more stable, and the appearance design is more fashionable and scientific.

摘要：【中文】本发明提供了一种运动头盔自适应通风进气装置及运动头盔，涉及运动头盔技术领域，解决了现有技术中存在的运动头盔采用固定开度的通风进气装置，影响了用户使用的舒适度的技术问题。该运动头盔自适应通风进气装置包括外通风部、内通风部及背压组件；所述外通风部、内通风部均为腔体结构并能够通气；所述内通风部套接在所述外通风部的内部并能够进行滑动，改变所述通风进气装置的通气量；所述背压组件在所述外通风部的内部，两端分别与所述外通风部、内通风部连接。本发明通过外通风部、内通风部的通气结构相互遮挡、贯通从而改变通气量，并在背压组件的弹力作用下根据运动速度的变化对通气量进行自适应调节，提高了用户使用的舒适度。 【EN】The invention provides a self-adaptive ventilation and air intake device of a sports helmet and the sports helmet, relates to the technical field of sports helmets, and solves the technical problem that the comfort level of a user is influenced because the sports helmet in the prior art adopts a ventilation and air intake device with a fixed opening. The self-adaptive ventilation air inlet device of the sports helmet comprises an outer ventilation part, an inner ventilation part and a back pressure component; the outer ventilation part and the inner ventilation part are both of cavity structures and can ventilate; the inner ventilation part is sleeved inside the outer ventilation part and can slide, so that the ventilation capacity of the ventilation and air intake device is changed; the back pressure subassembly is in the inside of outer ventilation portion, both ends respectively with outer ventilation portion, interior ventilation portion are connected. The ventilation structure of the outer ventilation part and the ventilation structure of the inner ventilation part are mutually shielded and communicated, so that the ventilation quantity is changed, the ventilation quantity is adaptively adjusted according to the change of the movement speed under the elastic action of the backpressure component, and the use comfort of a user is improved.

摘要：【中文】一种水下低频窄带隔声结构单元，涉及减振降噪领域，具体涉及一种水下隔声结构。舰船等水下航行器在航行中通常存在较强的低频线谱振动噪声，本发明是一种能够适用于水下的、对低频线谱噪声有良好的隔声效果的隔声结构。水下低频窄带隔声结构单元包括穿孔板、弹性元件和固定框；弹性元件一端固定在穿孔板下表面，弹性元件另一端固定在固定框上。本发明隔声结构单元具有结构简单、外形适应性强、声学设计简单的特点。本发明中穿孔板上通孔的孔隙形状可以任意选择。 【EN】An underwater low-frequency narrow-band sound insulation structure unit relates to the field of vibration and noise reduction, and particularly relates to an underwater sound insulation structure. The invention relates to a sound insulation structure which is applicable to underwater and has good sound insulation effect on low-frequency line spectrum noise. The underwater low-frequency narrow-band sound insulation structure unit comprises a perforated plate, an elastic element and a fixed frame; one end of the elastic element is fixed on the lower surface of the perforated plate, and the other end of the elastic element is fixed on the fixed frame. The sound insulation structure unit has the characteristics of simple structure, strong appearance adaptability and simple acoustic design. The shape of the pores of the through holes on the perforated plate can be selected at will.