96results about How to "Small volume and mass" patented technology

The invention provides a fiber base multilayer structure friction nanometer power generator and a preparation method thereof. The fiber base multilayer structure friction nanometer power generator ischaracterized in that the power generator comprises an electropositive friction layer and a multilayer structure electronegative friction layer; the electropositive friction layer and the multilayer structure electronegative friction layer are static spinned nanofiber films; the multilayer structure electronegative friction layer comprises an electric storage layer, a conductive layer and a friction contact layer, wherein the electric storage layer, the conductive layer and the friction contact layer are successively arranged from bottom to top; and the electropositive friction layer and the electronegative friction layer can contact with each other or be separated from each other for generating electric charges. The prepared multilayer structure friction nanometer power generator has advantages of increasing shortcircuit current by 40-150%, boosting open-circuit voltage by 100-250%, and increasing electric quantity by 40-100%. The friction nanometer power generator according to the invention has advantages of high surface charge density, low volume mass, simple structure and short process flow. The fiber base multilayer structure friction nanometer power generator can efficientlycollect mechanical energy generation in human body movement and has wide application range in the field of microelectronics.

The invention comprises a securing frame, a chip placement head and chip placement module and a vacuum module. Said securing frame is a dustpan-like frame composed of a main frame and a slave frame; the chip placement module is a cuboid; the vacuum module is located above the securing frame; based on the securing frame, the chip placement module and vacuum module are secured on the securing frame; during operation, in each moment only one surface-mounted component acts; each surface-mounted component acts sequentially; the vacuum system fits the hollow axle action to control the vacuum source to generate or destroy the press control in order to absorbing or place the chip by the hollow axle.

The invention relates to a permanent-magnetic retarder. The structure of the retarder comprises a stator, a rotor and a control mechanism. The rotor consists of a plurality of permanent magnets and a magnet retainer, and can be rotationally arranged in the stator. The control mechanism is positioned inside the rotor and used for operating and controlling the braking state. The permanent-magnetic retarder is arranged between an automobile clutch and a gear box, and the braking effect of the retarder on an automobile is enhanced through the speed reducing function (namely torque amplification) of the gear box; the stator of the permanent-magnetic retarder is arranged on the outer side of the rotor, and a rotating part is arranged inside the rotor, so the permanent-magnetic retarder is safer compared with the prior permanent-magnetic retarder or the current vortex retarder; the stator of the permanent-magnetic retarder is provided with a liquid cooling device so that the heat dissipation effect is good, and the brake torque does not decline when the permanent-magnetic retarder works for a long time; the control mechanism of the permanent-magnetic retarder adopts the prior frictional plate type, so the shift of the braking state can be easily realized, and no magnetic leakage torque is generated in the non-braking period; and the permanent-magnetic retarder has the advantages of compact integral structure and small volume and mass.

The invention relates to a load-variable upper limb assistance outer skeleton, in particular to a load-variable upper limb assistance outer skeleton based on the ditetragon gravity balancing principle. The problems that an existing upper limb outer skeleton is directly driven by a motor to achieve assistance, the volume and mass are large, a circuit is complex, reliability is reduced, and energy consumption is large are solved. The outer skeleton comprises two spring energy storage mechanisms, a back part, straps, two arms, two wrists, two rotating discs and a plurality of magnetic sensors. One end of each arm is connected with the upper portion of the corresponding side of the back part through the corresponding rotating disc. The other end of each arm is connected with the corresponding wrist. The straps are arranged on the front face of the back part. The magnetic sensors are sequentially arranged on the back face of the back part from top to bottom. The two spring energy storage mechanisms are arranged on the back part. Each spring energy storage mechanism is connected with the corresponding arm. The invention belongs to the field of medical apparatuses and instruments.

The invention provides a multi-degree-of-freedom self-sensing precise pointing and vibration isolating integrated platform and a combined device. The multi-degree-of-freedom self-sensing precise pointing and vibration isolating integrated platform comprises load discharging devices (1), drive supporting rods (2), connection bases (3), an upper platform (4), locking devices (5), positioning supporting tools (6) and a lower platform (7), wherein the load discharging devices (1) are connected with the upper platform (4) and separated from the lower platform (7); the connection bases (3) in fastened connection with the upper platform (4) are connected with the connection bases (3) in fastened connection with the lower platform (7) through the drive supporting rods (2); the locking devices (5)are connected between the upper platform (4) and the lower platform (7); the positioning supporting tools (6) are arranged on the lower platform (7); and the drive supporting rods (2) are obliquely embedded in semi-arc grooves of supporting edges of the positioning supporting tools (6). The multi-degree-of-freedom self-sensing precise pointing and vibration isolating integrated platform integratesintelligent sensing and has the characteristics of achieving multi-degree-of-freedom precise positioning, integrating active vibration isolating and passive vibration isolating, achieving safe locking, being convenient to assemble and high in bearing capacity, and the like.

A welding fixture for a ring on the bottom of a carrier rocket propellent tank comprises an installation base and multiple groups of combined clamp assemblies and is characterized in that the combined clamp assemblies are installed on the installation base and can move along the radial direction of the installation base; each combined clamp assembly comprises a back face rigid supporting component and a front face compacting component; an installation interface is disposed on the rigid supporting component; and the front face compacting component is connected to the rigid supporting component by the interface. The welding fixture provided by the invention has the advantages that the technical problems of high fixture manufacture cost in existing assembly and complex assembly processes are solved; a fixture structure is simplified; production and manufacture efficiency is increased; and a fixture utilization rate is increased.

The invention provides a dual-rotor flux-switching permanent-magnet motor and belongs to the technical field of electric motors. The dual-rotor flux-switching permanent-magnet motor comprises a stator, an inner rotor and an outer rotor, wherein the stator is formed by connecting a plurality of stator modules, each stator module is composed of a stator iron core tooth (1), a permanent magnet (2) and an armature winding (3), the inner rotor (4) and the outer rotor (5) are located on the inner circle and the outer circle of the stator respectively, and independent air gaps are formed between the inner and outer rotors and the stator respectively. With the change of relative positions of the stator and the rotors, paths of flux emitted by the permanent magnets are switched continuously, and when the flux of a winding linkage is maximum, the paths of the flux are emitted by the permanent magnets and closed by the inner and outer air gaps, the inner and outer rotors and the stator iron core teeth. According to the motor, the defects that traditional flux-switching permanent-magnet motors are serious in flux leakage of outer circles of stators and low in utilization ratio of permanent magnets are overcome, and the torque and the power density of the motor can be improved.

The invention provides a low-thrust-fluctuation continuous pole permanent magnet synchronous linear motor, which belongs to the technical field of motors. The low-thrust-fluctuation continuous pole permanent magnet synchronous linear motor comprises a primary assembly and a secondary assembly, wherein the primary assembly is composed of an armature winding and a primary iron core, a groove is formed in the primary iron core, the armature winding is arranged in the groove, phase positions of unit motors are staggered by 180 degrees by means of the structural design of the primary iron core, and winding directions of in-phase windings on the adjacent unit motors are opposite; and the secondary assembly is composed of permanent magnets and a secondary iron core, magnetizing directions of the permanent magnets are the same, and the secondary iron core is composed of secondary teeth and secondary back yokes between the permanent magnets.

The invention provides a saline-alkali soil improving matrix and a preparation method thereof. The improving matrix is prepared from, by weight, 80-100 parts of wood processing waste, 40-50 parts of duck manure, 2-5 parts of monoammonium phosphate, 25-35 parts of calcium phosphate, 15-25 parts of flue gas desulfurization gypsum, 20-30 parts of vermiculite, 10-20 parts of perlite, 30-40 parts of furnace ash and slag, 120-130 parts of hydrolytic polymaleic anhydride and 1-2 parts of yeast. The saline-alkali soil improving matrix solves the problem that wood processing waste, flue gas desulfurization gypsum and furnace ash and slag cause environment pollution. Water-logged compost fermentation is conducted on the wood processing waste and duck manure by means of a microorganism fermentation agent. Physical and chemical properties of saline-alkali soil and soil microorganism living environments are improved by means of the organic matrix, a series of problems such as deterioration of physical and chemical properties of soil, nutrient unbalance, soil physical structural damage, acidification, hardening, release of toxic substances and the like caused by blindly applying an excessive amount of fertilizer are avoided, good economic benefits can be obtained, and unnecessary loss is avoided.

A double-salient liquid cooling eddy current retarder with a front-loading gearbox belongs to the field of automobile braking. The double-salient liquid cooling eddy current retarder structurally comprises a clutch magnet yoke, a clutch coil, a clutch disc, a retarder rotor, a retarder stator, a retarder coil and a control module. The retarder is disposed between an engine and the gearbox. Torque is amplified by speed reduction of the gearbox, so that braking effect of the retarder is improved. The retarder rotor is a tooth-shaped rotary disc and connected with a transmission shaft through a support bearing. A permanent magnet is mounted on the inner side of the retarder rotor. The permanent magnet drives the retarder rotor to rotate to allow approximate synchronous rotation of the retarder rotor with an automotive spindle, and accordingly loss during operation of clutch friction plates is reduced. By the permanent magnet, approximate synchronous rotation of the retarder rotor with the automotive spindle is achieved, friction plate loss during braking of the retarder is reduced, a work mode that the clutch is in prior to the retarder is used, and accordingly better braking effects and heat fading compared with traditional eddy current retarders are achieved. In addition, the double-salient liquid cooling eddy current retarder is compact in structure and low in size and weight.

The invention relates to the technical field of robots or mechanical arms, in particular to a small multifunctional tail end operational tool assembly of a mechanical arm. The tail end operational tool assembly of the mechanical arm comprises a tail end operational tool and adapters, wherein the tail end operational tool comprises a shell, an end cover, a plurality of guide blocks, grabbing fingers, ball screws and a driving mechanism, the end cover is connected to one end of the shell, the guide blocks are connected to the end cover, the ball screws are arranged in the shell and are connected with the grabbing fingers through lead screw nut components, the ball screws can drive the grabbing fingers to move, the driving mechanism can drive the ball screws to rotate, and the adapters are matched with the guide blocks and the grabbing fingers. Compared with the prior art, the tail end operational tool assembly of the mechanical arm has the advantages that capturing, locking and unlocking of the two different adapters can be achieved with the single driving mechanism, the overall structure is simple and compact, the size is small, and the weight is small.

The invention discloses a constrained speed reducer with small teeth difference, which comprises a shell, a power input shaft and a power output shaft, wherein the power input shaft is provided with a transmission inner tooth disc of inner engaging teeth through an eccentric sleeve, the power output shaft is fixedly matched and provided with an outer gear in the circumferential direction, and the outer gear is engaged with the inner engaging teeth of the transmission inner tooth disc in a small teeth difference mode; and eccentric shaft sections of constraint shafts in running fit with the shell pass through the transmission inner tooth disc and are in running fit with the transmission inner tooth disc, at least two constraint shafts are uniformly distributed along the circumferential direction, and the eccentric distance of the eccentric shaft sections is equal to that of the eccentric sleeve. The constrained speed reducer eliminates the relative spinning motion of a power input mechanism, outputs power by revolution, and has high reduction ratio, high transmission rigidity and high load transfer capability; when motion disturbance or other additional motion appears, the speed reducer can rotate normally, improve the transmission efficiency and successfully output the motion; meanwhile, the speed reducer has a simple and compact structure and small volume mass, and provides an effective path for selection of the speed reducer in mechanical engineering.

The invention relates to a flexible and bendable shape-memory alloy actuator. A shape-memory alloy wire is taken as an actuation element, is retracted when electrified and heated and is elongated when cooled, so that displacement of the actuator and output of force are realized. The actuator comprises a drive end, a flexible solenoid and a fixed end, wherein the shape-memory alloy wire is arranged in the bendable solenoid, one end of the shape-memory alloy wire is in rigid connection with an output shaft, and the other end of the shape-memory alloy wire is connected with a fixed end cap; a bias spring is arranged in the drive end and can assist the shape-memory alloy wire in elongation in the cooling process. The actuator is small in size, light in weight and simple and reliable in structure, can bend according to certain curvature and can be easily mounted and integrated with an external mechanism, and the output force and the displacement are adjustable.

The invention provides a collimator device capable of automatically adjusting the gamma ray flux and a measuring system. A collimation window is formed in the front section of a collimator outer shielding body, a through hole is formed in the rear section of the collimator outer shielding body, a detector penetrates through the through hole for connection, and gamma rays can enter the detector from the collimation window. A servo motor and a speed-changing gear box are connected with a lead screw through a gear assembly connecting rod and a gear assembly; two guide rails are inclined inwards along the collimation window and are symmetrically arranged on the two sides by taking the detector as the center; the servo motor is controlled to drive the lead screw, then a collimation opening shielding sliding block is driven by a shielding block sliding connecting rod, the position of the collimation opening shielding sliding block is adjusted, the size of the collimation window is changed, and the adjusting function of the gamma ray flux is realized. The device can automatically adjust the flux of the gamma rays, with the sensitive volume, entering the detector according to the initial measurement value, has a similar adjusting function for low-energy rays to high-energy rays, and is easy to operate, compact in structure and suitable for nuclear power plants and nuclear technology application radioactive waste detection systems.

The present invention relates to an anti-blocking controllable positive-displacement grooved wheel distributing valve. It can be extensively used in the fields of chemical industry, pharmaceutical industry and grain processing industry, etc. for conveying two kinds or more than two kinds of granules materials or power materials according to a certain mixing ratio. It includes the following several portions: two material tanks, two grooved wheels, end covers, material outlet, observation window and scraper, etc. Said invention also provides the connection mode of all the above-mentioned portions, and also provides the working principle of said anti-blocking controllable positive-displacement grooved wheel distributing valve and its concrete operation method.

The invention provides a preparation method for a bio-fertilizer, belongs to the technical field of the bio-fertilizer, and particularly relates to a preparation method for a bio-fertilizer used for improving saline alkali soil and remedying soil fertility. The bio-fertilizer prepared by the provided preparation method is capable of increasing the supply amount of plant nutrient through the vital movement of microorganisms, inhibiting the activity of harmful microorganisms, improving the physical behavior of the soil of the saline-alkali stress, increasing the soil fertility, and improving the micro-ecological environment.

The invention provides an optical fiber sensor, a manufacturing method thereof and a motion sensing device, and relates to the field of sensors. The optical fiber sensor comprises a sleeve, a magneticmass and a sensing optical fiber, wherein the magnetic mass is located in the sleeve, and magnetic fluid is adsorbed on the outer surface, opposite to the inner wall of the sleeve, of the magnetic mass, so that the magnetic mass can float in the sleeve and move along the axis of the sleeve; one end of the sensing optical fiber penetrates into a first port of the sleeve, a reflecting plane is arranged on the outer surface, opposite to the sensing optical fiber, of the magnetic mass, based on the sensing optical fiber, incident light can be supplied to the reflecting plane, and measurement light from the reflecting plane can be received. The high-sensitivity sensor can be achieved based on second-order suspension action of the magnetic fluid, and the sensor has the advantages of being simple in structure and small in volume and mass, facilitating remote measurement and distributed measurement, and the like.

The invention provides a rotating disc type aircraft engine which comprises a combustion chamber, a cylinder body, a rotating disc, a blade and a piston which is connected to the rotating disc, wherein the cylinder body is of a hollow ring shape and is provided with an air inlet and an air outlet; the piston is contained in the cylinder body; the combustion chamber is connected to the cylinder body and is arranged corresponding to the air inlet of the cylinder body; the combustion chamber is used for inputting and igniting oil gas and applying motive power to the piston; the rotating disc and the blade on the rotating disc are driven by the piston to rotate; and motive power is generated by the rotation of the blade. Compared with the prior art, the rotating disc type aircraft engine provided by the invention has the advantages of scientific and reasonable structure, smaller size, light weight, high energy conversion efficiency, improved rotation speed and improved blade tolerance, is especially applied to the fan motive power of a large turbofan engine with high-bypass ratio, thus fuel can be saved, and the rate of supercharging and push power of the engine can be improved.

The invention discloses an eliminating device for a radial clearance at the connecting position of a folding and unfolding mechanism and belongs to the technical field of space mechanism unfolding, connecting locking and releasing. By means of the eliminating device for the radial clearance at the connecting position of the folding and unfolding mechanism, the existing problem that the radial clearance between a base body and an unfolding part after pin locking affects reliability and stability of the folding and unfolding mechanism is solved. By means of the eliminating device for the radialclearance at the connecting position of the folding and unfolding mechanism, the clearance between the unfolding part and a rotating shaft and the clearance between the side face of the unfolding partand the inner side face of the base body after unfolding part locking can be effectively eliminated while it is ensured that the unfolding part is unfolded smoothly, the influences on the rigidity and the base frequency of the clearances on the folding and unfolding mechanism are avoided, and the phenomenon that the anti-interference capability of the folding and unfolding mechanism is affected is prevented. In addition, a threaded section connection transmission manner is adopted between the rotating shaft and the unfolding part, and the beneficial effects that the connector strength is high, connection is convenient, repeated use is achieved, standardization is achieved are achieved, and stable and reliable clearance eliminating can be achieved under the cooperation of the mechanism. The eliminating device has the beneficial effects of being simple in structure, small in volume mass, high in responding speed and high in environment adaptability.

The invention provides a unit motor modular consequent pole permanent magnet synchronous linear motor and belongs to the motor technical field. The unit motor modular consequent pole permanent magnet synchronous linear motor is composed of a plurality of unit motors; each unit motor includes a primary assembly and a secondary assembly; the primary assembly is composed of a primary iron core and an armature winding, wherein the primary iron core is slotted, and the armature winding is arranged in the slots of the primary iron core; the secondary assembly is composed of permanent magnets, iron poles and a yoke plate, wherein the iron poles and yoke plate are integrally modeled; an air gap is left between the primary assembly and the secondary assembly; a magnetic adjusting structure is arranged between two adjacent unit motors; the width of the magnetic adjusting structure can be expressed as an equation that S=(k+2 / 3)tau, wherein k is an integer, and tau is the pole pitch of the motors; and the arrangement sequences of the windings in the slots of the two adjacent motor units are different. With the structure adopted, the suppression of an end portion effect can be benefitted, the asymmetry of the three-phase windings of the permanent magnet synchronous linear motor can be improved, and thrust ripples can be decreased.

The invention discloses a spectacle case realizing automatic cleaning for lenses. The spectacle case comprises a spectacle case body, a storing cavity with an upward opening is arranged in the spectacle case body, a box cover capable of closing the storing cavity is arranged at the upper side of the spectacle case body, two cleaning mechanisms are arranged on each of the lower end face of the boxcover and the left end face of the storing cavity, the cleaning mechanism comprises a fixing block, a liquid storing cavity for storing cleaning liquid is arranged in the fixing block, and a sliding cavity with the side end wall communicating with the storing cavity is arranged in the fixing block. The device is simple in structure, and convenient and rapid to operate, the cleaning for the lensesof spectacles can be automatically completed, meanwhile, the operation is completed without using abundant cleaning liquid, so that the volume mass of the spectacle case is reduced, moreover, throughan elastic sealing ring, the sealing for the spectacle case is tighter, so that the phenomenon that dust enters the spectacle case, consequently, the use of the spectacles is influenced is prevented,in addition, through locking protection for the spectacle case, the safety of the spectacles in the spectacle case can be better alarmed, and thus the use range of the spectacle case is expanded.

The invention provides an integral forging hook cylinder of a hook bock assembly for a minus 60 DEG C polar region drilling rig and a manufacturing method of the integral forging hook cylinder. The forging hook cylinder is characterized in that the upper part is a square body, pin holes are formed in the square body, the lower part is a cylinder, the cylinder is provided with a base plate and pinholes, the middle part is in circular cone transition, and the interior is provided with a stepped through hole. The manufacturing method comprises the following steps that (1) forging is carried out,wherein upsetting and drawing are carried out on a blank in advance, then upsetting and punching are carried out in a die, a core penetrating shaft is drawn in a V-shaped anvil, the square body is formed by forging on a flat anvil, and finally correcting and forming are carried out in the die; and (2) heat treatment is carried out, wherein normalizing is carried out after forging, normal tempering is carried out after rough machining, and then sub-temperature quenching and high-temperature tempering are carried out. Compared with the prior art, the hook cylinder manufactured by the method isfewer in defect, good in low-temperature toughness, high in nondestructive inspection qualification rate, small in size and high in production efficiency is high; and meanwhile, the hook cylinder hasthe interchangeability with an original casting structure, the quality grade is in accordance with the PSL2 of Spec 8C of the American Petroleum Institute (API), and the use requirements of the minus60 DEG C polar environment are met.

A self-excited eddy current liquid-cooled retarder is disclosed. The retarder pertains to an auxiliary braking device retarding a vehicle, and comprises a retarder rotor, a retarder stator, a control module and a generator unit. The retarder rotor comprises a retarder coil, an electromagnet core and a core cage. The retarder coil is wound on a coil frame. The electromagnet core is inserted into the coil frame. The electromagnet core, the retarder coil and the coil frame are evenly distributed on the circumference of the core cage. The retarder rotor is connected to a transmission shaft of an automobile. The inner circle of the retarder stator and the outer circle of the electromagnet core of the retarder rotor are coaxial. The generator unit comprises a generator exciting winding, a generator exciting magnetic pole, a generator armature winding and a generator armature core and is received in the retarder rotor.

The invention belongs to the technical field of liquid transfer, and relates to an automatic liquid transfer device, which mainly solves the problem of miniaturization of a motor-driven liquid transfer device. The automatic liquid transfer device is characterized in that a motor driving mechanism and a liquid transfer gun inner tube jointly form a liquid transfer gun tube module, the module can realize the independent control of a liquid transfer gun tube and the synchronous control of a plurality of gun tubes, and in addition, the operation of assembling and disassembling a gun head can be independently finished. The module is connected with an injector through a slim tube, and during liquid transfer operation, the injector does not need to be moved, and only the liquid transfer gun tube module needs to be controlled to move through the Z axis of the XYZ three-axis platform or a mechanical arm. The problem that a liquid transfer gun barrel in a small multi-channel liquid transfer device cannot be independently controlled can be solved, and the device has important significance in application of the multi-channel liquid transfer device in a complex and narrow environment.

A double-salient liquid cooling eddy current retarder with a front-loading gearbox belongs to the field of automobile braking. The double-salient liquid cooling eddy current retarder structurally comprises a clutch magnet yoke, a clutch coil, a clutch disc, a retarder rotor, a retarder stator, a retarder coil and a control module. The retarder is disposed between an engine and the gearbox. Torque is amplified by speed reduction of the gearbox, so that braking effect of the retarder is improved. The retarder rotor is a tooth-shaped rotary disc and connected with a transmission shaft through a support bearing. A permanent magnet is mounted on the inner side of the retarder rotor. The permanent magnet drives the retarder rotor to rotate to allow approximate synchronous rotation of the retarder rotor with an automotive spindle, and accordingly loss during operation of clutch friction plates is reduced. By the permanent magnet, approximate synchronous rotation of the retarder rotor with the automotive spindle is achieved, friction plate loss during braking of the retarder is reduced, a work mode that the clutch is in prior to the retarder is used, and accordingly better braking effects and heat fading compared with traditional eddy current retarders are achieved. In addition, the double-salient liquid cooling eddy current retarder is compact in structure and low in size and weight.

A general method of cooling and maintaining the uniform temperature of an extended structure is provided with specific application discussed of keeping a superconducting coil at cryogenic temperatures in the presence of external heat loads that may be variable in space and time. The approach embeds the structure to be cooled (208) into the vapor space (108) of a heat pipe assembly (202), which consists of an outer wall (116), a fluid wicking mechanism (110, 114), thermal insulation (118) and a mechanism for heat extraction, such as the cold tip (206) of a cryocooler (204).

The invention discloses a surgical instrument for a minimally invasive surgical robot, and the surgical instrument comprises a tail gripper arm part which comprises a left gripper arm and a right gripper arm, and the left gripper arm and the right gripper arm can be opened or closed relatively; a horizontal rotation adjusting mechanism which is used for driving the tail gripper arm part to rotate in the horizontal plane; a pitching adjusting mechanism which is used for driving the tail gripper arm part to overturn upwards or downwards; a connecting pipe part is connected with the tail gripper arm part, and the connecting pipe part is used for driving the tail gripper arm part to rotate around the axis of the connecting pipe part; and a driving interface part is respectively connected with the horizontal rotation adjusting mechanism, the pitching adjusting mechanism and the connecting pipe part, and the driving interface part is used for driving the horizontal rotation adjusting mechanism, the pitching adjusting mechanism and the connecting pipe part to operate. The surgical instrument is high in rigidity and small in size and mass, meanwhile, wiring simplification and light weight are achieved, and the accuracy and reliability of surgical instruments in the minimally invasive environment are guaranteed.

The invention provides a composite abrasion-resistant plate structure for bank financial equipment. The composite abrasion-resistant plate structure comprises two layers of a steel plate and an abrasion-resistant ceramic embedded between the two layers of the steel plate, wherein the abrasion-resistant ceramic employs alumina, zirconia, tungsten carbide, silicon nitride or silicon carbide, and the steel plate is prepared from one selected from the group consisting of low-carbon steel, medium-carbon steel, high-carbon steel, low-alloy steel, high-alloy steel, stainless steel and wear-resistant steel or composite steel of the steel selected from the group . The composite abrasion-resistant plate structure can effectively resist cutting by an abrasive-disk cutter.

The invention discloses a silk composite fabric production method, and belongs to the technical field of production of fabrics. The silk composite fabric production method comprises: blending bamboo fiber and ramie fiber to prepare mixed yarn, carrying out softening treatment; wrapping with silk and spandex filament to prepare a silk-spandex coated silk; weaving by using the mixed yarn as weft andusing the silk-spandex coated silk as warp to form a composite billet silk; carrying out impurity removing on the composite billet silk through a refining process; carrying out water washing, soaking, and introducing menthol molecules; and carrying out dyeing and other re-processing processes to obtain the silk composite fabric. According to the present invention, the prepared silk composite fabric has excellent characteristics of moisture absorption, gas permeation, coolness and refreshing, and is particularly used as the summer fabric, and further has advantages of good anti-mold property,good wear resistance, good elasticity, good elastic recovery and good wrinkle resistance, such that the fabric has the complete performances; and the soaking device used by the method has advantages of simple and flexible structure, simple application and good implementation effect.

The invention provides microbial fertilizer for soil improvement and remediation, which is prepared from the following raw materials in parts by weight: 65 to 75 parts of charcoal, 10 to 14 parts of potassium chloride, 4 to 6 parts of polypropylene peptide amine, 6 to 10 parts of compound microbial agent, 0.5 to 1.5 parts of lignin iron, and 3 to 5 parts of attapulgite. According to the microbialfertilizer for soil improvement and remediation, which is provided by the invention, the charcoal is used as the main raw material and is matched with a certain amounts of potassium chloride, polypropylene peptide amine and compound microbial agent, so that rich organic matter and elements of nitrogen, phosphorus and potassium can be provided for soil, soil hardening and aggregating phenomena areeffectively improved, and air permeability and the water-retaining property of the soil are enhanced; by the lignin iron and the attapulgite, an iron shortage phenomenon of the soil is improved and deleteriousness of the soil is reduced, so that comprehensive performance of the soil is greatly improved, fertility of the soil is improved, and yield of crops is reinforced.