60results about How to "Meet the structure" patented technology

The invention discloses a hybrid welding method and hybrid welding equipment for laser electromagnetic pulse. The method can be used for laser seam welding and laser spot welding technology, a pulsed high magnetic field is applied to a welding region during the process of laser welding on a workpiece with the effect of laser beams so as to mutually react with an induced plasma, a welding pool and a stress strain field through welding and complete welding task. The equipment comprises a laser device, an electromagnetic pulse generator, a numerical control system, an optical transmission system and a laser electromagnetic pulse combined machining head. The combined machining head is used for integrating the laser beams with the pulsed high magnetic field and adjusting the distance between an electromagnetic conversion device and the workpiece; the combined machining head is arranged on a machine tool. The structural deformation can be reduced, the welding quality and machining efficiency are improved, and insurmountable technical problems when a metallic material structure is manufactured through existing single welding technology are solved.

The invention discloses a simplified analysis method for the bending property of a box-section thin-wall beam, belonging to the field of car body design. The simplified analysis method for the bending property of the box-section thin-wall beam is mainly used for analyzing the bending deformation of the box-section thin-wall beam during car body collision in a concept car body finite element modelfor anti-collision researches at the concept design stage of a car. The simplified analysis method for the bending property of the box-section thin-wall beam mainly comprises four steps, i.e. classifying plastic hinge lines according to whether the lengths of the plastic hinge lines are changed or not, calculating rate of energy dissipated by the plastic hinge lines, calculating rate of energy dissipated by convex annular surfaces and calculating the bending property of the entire structure. The simplified analysis method for the bending property of the box-section thin-wall beam has the advantages that the requirements on the modeling of the simplified frame structure and the anti-collision analysis of the car body can be satisfied very well, designers can be assisted to rapidly extract the bending properties of the thin-wall beams, the cockamamie work for traditional finite element analysis and tests is avoided, the rapid performance assessment and the rapid modification of a preliminary design plan are realized, and the design cycle is shortened.

The invention belongs to the technical field of nuke industry measurement, and particularly relates to a spent fuel water tank liquid level and temperature measuring device. The device comprises a measuring barrel with an opening in the bottom, wherein a RTD continuous liquid level sensor, a differential thermocouple discrete liquid level sensor and a thermocouple temperature sensor, which are isolated with one another, are installed in the measuring barrel along the height direction; the liquid level measuring range of the RTD continuous liquid level sensor is from the top of a fuel grillage to the full water level of a water tank, and the thermocouple discrete liquid level sensor is arranged on a set standard height level of the water tank; the RTD continuous liquid level sensor, the differential thermocouple discrete liquid level sensor and the thermocouple temperature sensor are connected with respective transmitting processing units through respective cables. The continuous liquid level, the discrete point liquid level and the temperature in the water tank are measured by adopting the three sensor elements based on different measuring principles and independent from one another, and the problem for simultaneously monitoring the continuous liquid level, the discrete point liquid level and the temperature in the water tank, caused by the failure of a common mode, can be avoided.

The invention relates to a stator blade mounting structure which can be applied to the fields of ground gas turbines, aero-engines and the like. The stator blade mounting structure comprises stator blades with a pressing plate, inner and outer ring light elastic parts, inner and outer ring casings and an outer ring pressing hoop. Through the parts, the single blade dismantling function of the stator blades can be achieved. As the light elastic parts are adopted, assembling and positioning of the whole-ring stator blades are achieved through the cold-state interference magnitude of the light elastic parts and the inner and outer ring blade profiles of the blades. Under an assembly state, the stator blade mounting structure has certain rigidity and can transfer aerodynamic torque of the stator blades to the corresponding position of a casing mounting edge. By means of the structure, the weight of the ground gas turbines and the aero-engines can be remarkably reduced. The maintainabilityof the stator blades is improved while the machining difficulty of the stator blades is lowered, and the single blade dismantling function of the blades is achieved. Through the structure, under the excitation action force of mainstream unsteady airflow in a channel, the risk of self-excited vibration of the stator blades can be reduced.

The invention discloses a variable stiffness flexible actuator. The variable stiffness flexible actuator comprises a power transmission mechanism, a stiffness adjusting mechanism and a stiffness output mechanism; the power transmission mechanism comprises a gear transmission mechanism and two motors, the two motors are arranged in parallel connection, and the gear transmission mechanism inputs power; the stiffness adjusting mechanism comprises two four-rod mechanisms, each four-rod mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod and a plate spring, and a sliding block is arranged on the plate spring; the stiffness output mechanism comprises a stiffness output shaft, a pair of stiffness output rods, a shell and a support, and through two motors, the balance position of output of the stiffness output mechanism and the position of the sliding block on the plate spring are controlled, and therefore stiffness of the variable stiffness flexible actuator is adjusted; through dual-plate-spring dual four-rod mechanisms, the stiffness control range of the actuator is larger, the structure is compact, the size is small, and control is easy.

The invention provides a method of rapidly manufacturing a thermoelectric device. The method comprises the following steps of 1) preparing a raw material; 2) according to a needed electrode pattern and a thickness, using a selective laser fusion technology to print a electrode powder on an insulation substrate (1); 3) using the selective laser fusion technology to print p-type and n-type thermoelectric compound powders into p-type and n-type thermoelectric arms on an electrode layer 1 acquired from the step 2) respectively; 4) using the selective laser fusion technology to print the electrode powder on the p-type and n-type thermoelectric arms so as to acquire an electrode layer 2, wherein the electrode layer 2 connects the p-type and n-type thermoelectric arms; and 5) covering an insulation substrate 2 on a surface of the electrode layer 2 so as to acquire the thermoelectric device. In the invention, a thermoelectric material powder is used and the selective laser fusion technology is adopted; through a layered manufacturing technology, the thermoelectric device is printed; tedious intermediate links during a traditional thermoelectric device manufacturing technology process are avoided; and problems that a yield and a raw material utilization rate are low in a traditional welding assembling technology are overcome.

The invention discloses a wheel noise reduction method and a multi-layer type wheel noise reduction block. According to the wheel noise reduction method, the multi-layer type wheel noise reduction block is arranged on a wheel for vibration attenuation and noise reduction, a mounting board is arranged in the multi-layer type wheel noise reduction block, a first hole and a second hole are formed inthe two ends of the mounting board correspondingly, and two end portion bolts penetrate through the first hole and the second hole to be screwed onto the wheel; a first outer restraint layer is arranged on the side, close to an axle, of the multi-layer type wheel noise reduction block; a suspension type inner restraint layer is arranged between the mounting board and the first outer restraint layer; a hollow spindle penetrates through the suspension type inner restraint layer, one end of the spindle makes contact with the mounting board, and the other end of the spindle makes contact with thefirst outer restraint layer; the suspension type inner restraint layer is vulcanized and stuck between the mounting board and the first outer restraint layer through a first damping layer; and a middle bolt penetrates through the first outer restraint layer, the spindle and the mounting board and then is screwed into the inner side portion of the circumferential direction of the wheel, and accordingly the middle of the multi-layer type wheel noise reduction block is connected to the wheel.

The invention relates to a method for manufacturing a handle base of a car door, in which a LGFRPP (long glass fiber reinforced polypropylene) material is adopted for manufacturing the handle base of the car door. The concrete manufacturing method comprises the following steps: step 1: manufacturing raw material for injection molding the car handle base, and further comprises the steps of mixing modified polypropylene and glass fiber to form the LGFRPP and then co-extruding the LGFRPP, uniformly coating the outer surface of the glass fiber with high polymer resin of polypropylene, cooling and cutting off the LGFRPP after the LGFRPP material is extruded to obtain a granular material which is the raw material, wherein the content of the glass fiber is 30% to 40%; step 2: carrying out oven-drying the raw material; step 3: putting the raw material into a charging barrel of an injection molding machine to melt; and step 4: dividing the melted raw material into two segments and injecting the two segments into a mold for molding, and obtaining the handle base after cooling and demolding. The manufacturing method provided by the invention has the beneficial effects of meeting the requirements for product size, structure and function while reducing weight and cost and significantly saving energy consumption in production.

The invention discloses a PCL/HA composite porous bone tissue engineering scaffold and a preparation method thereof, and belongs to the field of technical application of biomedical materials. The scaffold comprises, by mass, 0.5-50% of hydroxyapatite, and the balance of polycaprolactone, wherein the porosity of the scaffold is 10-89.4%, the pore diameter is 10-600 [mu]m, and the compressive strength is 0.98-10.20 Mpa. The PCL/HA composite porous bone tissue engineering scaffold has qualified cytotoxicity and good clinical application prospects; and the preparation method of the scaffold has the advantages of simple process flow, convenience in operation, and stable yield.

The invention discloses an LED bulb lamp which comprises an optical lens, a heat dissipating body, a driver, an LED light source, a lamp head, and a lamp seat. The LED bulb lamp is characterized in that the optical lens is arranged at one end of the heat dissipating body, the lamp seat is arranged at the other end of the heat dissipating body, the driver is arranged in an inner cavity of the lamp seat, the outer end of the lamp seat is connected with the lamp head in a riveting mode, and the LED light source is arranged on the inner surface of the heat dissipating body at the lower end of the optical lens. The LED bulb lamp can greatly improve luminance, enables a main illuminating face to be clearer in focus, increases a light illuminating area, increases a lighting face, eliminates glare, improves visual effect, and eliminates visual fatigue. The LED bulb lamp saves energy, protects the environment, and is long in service life and free of stroboflash.

The invention discloses a particle six-sided inspection machine. The particle six-sided inspection machine comprises a stander and a control system, and is characterized in that the control system is fixedly installed on the stander, a conveying device, a guiding device and a detection device are fixedly installed on the stander, the conveying device is electrically connected with the control system, the conveying device is communicated with the guiding device through a guide rail, the detection device is electrically connected with the control system, the detection device comprises a position detection part and a detector, the position detection part is installed on one end of the guiding device, the other end of the guiding device is provided with a sorting device, the sorting device is fixedly installed on the stander, the sorting device is electrically connected with the control system, and a detector is arranged between two ends of the guiding device. The particle six-sided inspection machine is complete in function, compact and reasonable in structure, capable of efficiently and precisely judging that whether the product quality is qualified or not and capable of separating the qualified products and unqualified products.

The invention relates to a preparation method of a foglight shell of a passenger car. The method comprises the steps of co-extruding mixed modified polypropylene and glass fiber and then cooling and cutting to obtain particles, wherein the content of glass fiber in the particles is 40%, the modified polypropylene is prepared by mixing and stirring polypropylene, antioxidant and ultraviolet absorber, and melting, and weight of the polypropylene is 100 parts, weight of the antioxidant is 0.3-1.2 parts and weight of the ultraviolet absorber is 0.5-0.8 parts; drying the particles; placing the particles into a charging barrel of an injection molding machine to melt; injecting the melted particles in sections to a mould for injection moulding; and cooling and demoulding to obtain the foglight shell. According to the method provided by the invention, the weight is lightened, the cost is reduced and the energy consumption in production is saved to a great extent while size, structure and function of the product are met.

The invention discloses a high-cleaning aged fuel, comprising 65-70 wt% of industrial methanol, 28-32 wt% of naphtha, and the balance consisting of an Al mixed additive, wherein, the Al mixed additive comprises burning accelerant(0.04-0.01 weight portions of ferrocene and 0.6-1.5 weight portions of methanol), lytic agent(0.1-0.4 weight portions of benzene, 0.1-0.4 weight portions of acetone, and 0.1-0.5 weight portions of n-heptane), anti-oxidant stabilizer(0.1-0.15 weight portions of 2,6-di-tert-Butyl- p-Cresol), and regulator( 0.1-0.2 weight portions of isopentane). The fuel has the advantages of strong dynamic property, little discharge capacity, lowered filter point, good universality, long reserve maintenance period and the like, and overcomes the defects that alcohol and petroleum fuels are not stable and immiscible, and the thermal efficiency of alcohol and petroleum fuels is low in the prior art.

The invention discloses a spread spectrum code synchronous transmitting method and a spread spectrum code synchronous transmitting device and belongs to the technical field of wireless signals. The method comprises the following steps that external spread spectrum signals are obtained; a group of local codes are locally generated and are respectively multiplied and integrated with external spread spectrum signals, the quadratic sum is obtained according to integral results, the integral power value is obtained, and the local code with the maximal integral power value is used as a matching local code; E, P and L matching local codes are generated and are respectively multiplied and integrated with external spread spectrum signals, the quadratic sum is obtained according to integral results, three paths of integral power values are obtained, and the phase difference is obtained according to the three paths of integral power values; the matching local code when the phase difference is zero is used as a capturing local code; and synchronous transmitting codes are generated according to the capturing local code and are sent. The method and the device have the advantages that the synchronous transmitting of the transmitting codes and the external spread spectrum signals can be realized, the limitation of spread spectrum code synchronization on the network structure and scale is reduced, and the demands of networks on high synchronization precision, simple structure and low cost are met.

The invention discloses a preparation method of a bionic artificial bone scaffold with a micro-structure. The artificial bone scaffold is prepared as follows: replaced bone is scanned through CT or MRI equipment, a group of cross-sectional images of the bone are acquired and subjected to pretreatment, binaryzation, image segmentation, edge tracking, spline fitting and other steps, and a macrostructure is generated; a solution set is obtained by means of a knowledge base, micropore structures meeting conditions of a patient are extracted, micropores are filled in a profile, and the porosity and the fractal dimension of the profile after filling are same as or similar to those of original diseased bone; an STL file is generated and then output to a three-dimensional printer for rapid forming of the bone scaffold.

The invention discloses a broadband omnidirectional/directional pattern reconfigurable antenna, and the antenna comprises a radiation unit, a feed unit, a feed metal column, a short circuit metal column, a short circuit pin, a floor plate, a coaxial line, a support column, a dielectric substrate and a radio frequency switch diode for controlling the working mode of the antenna. The dielectric substrate comprises an upper layer dielectric substrate and a lower layer dielectric substrate. The radiation unit comprises an inner circle and an outer circular ring which are loaded on the front surface of the upper dielectric substrate; the floor plate is loaded on the back surface of the lower dielectric substrate. The feed unit comprises a metal circle and a short circuit microstrip line, and the feed unit is loaded on the back surface of the upper dielectric substrate; the short circuit metal column is placed in a gap between the inner circle and the outer ring, and the short circuit pin isconnected with the feed unit and the outer ring of the radiation unit; the feed metal column is connected with the floor and the feed unit, and the antenna adopts coupling feed. By controlling the state of a radio frequency switch diode, the antenna can realize reconstruction of omnidirectional radiation characteristics and directional radiation characteristics of a broadband.

The invention provides an outlet structure of a pipeline of a non-excavation type comprehensive pipe rack. The outlet structure comprises an outlet well, a connecting channel and a comprehensive pipe rack tunnel. The outlet well comprises a first opening and a second opening. The first opening is formed in the upper end of the outlet well and communicates with the ground, and the second opening is formed in the outlet well; a third opening is formed in the comprehensive pipe rack tunnel; one end of the connecting channel communicates with the second opening while the other end of the connecting channel communicates with the third opening, and the outlet well, the connecting channel and the comprehensive pipe rack tunnel successively communicate to form a through outlet channel. The outlet structure of the pipeline of the non-excavation type comprehensive pipe rack provided by the invention solves the problem of pipeline outlet of a built tunnel of the non-excavation type comprehensive pipe rack and determines the pipeline outlet mode.

The invention belongs to the technical field of industrial exhaust gas treatment and provides an industrial exhaust gas purification treatment system. The system comprises a gas inlet, an oil fume gas condensing tower, a wet water film high pressure industrial exhaust gas purifier, a bag dust removing device, a cold combustion electrolysis tower, a plasma photocatalytic device and a gas outlet, the above parts are orderly communicated by pipes, a fan is arranged at the gas outlet, the top of the oil fume gas condensing tower is communicated with the top of the wet water film high pressure industrial exhaust gas purifier, the bottom of the wet water film high pressure industrial exhaust gas purifier is communicated with the bottom of the bag dust removing device, the top of the bag dust removing device is communicated with the top of the cold combustion electrolysis tower, and the bottom of the cold combustion electrolysis tower is communicated with the bottom of the plasma photocatalytic device. The system solves the problem that the existing treatment device has poor industrial waste gas treatment effects and cannot satisfy the existing industrial waste gas treatment demands.

The invention relates to a treating system of small high-pressure natural gas well, wherein the system is characterized in that: it comprises a natural gas guide tube, a natural gas filter, a dewater separator and a natural gas separating drier; said natural gas filter and dewater separator have gas inlet and outlet; the drier has gas inlet and gas outlet; the guide tube is connected to the gas inlets of natural gas filter and dewater separator, while their gas outlets are connected to the gas inlet of natural gas separating drier; the gas outlet of drier is controlled by gas valve. The invention has simple structure and lower cost.

The invention relates to a porous calcium phosphate/gelatin composite scaffold for bone tissue engineering and a preparation method of the porous calcium phosphate/gelatin composite scaffold, and belongs to the field of application of a biomedical material technology. The composite scaffold is prepared by the following steps: steeping organic form obtained by laser processing and molding as a carrier into slurry containing calcium phosphate powder, and then carrying out the processes of heating, drying, thermal treatment and the like to prepare the porous calcium phosphate scaffold combining irregular through holes and regular straight through holes; and compounding the prepared porous calcium phosphate scaffold and gelatin to obtain the porous calcium phosphate/gelatin composite scaffold for bone tissue engineering, wherein the composite scaffold has a hole structure combining the irregular through holes and the regular straight through holes; the porosity is 70-95%; the apertures of the irregular through holes are 50-600 microns; and the apertures of the regular straight through holes are 0.4-1.8mm. The method is simple in process, convenient to operate and stable in yield; and the prepared scaffold is qualified in cytotoxicity and good in osteogenesis effect and has a good application prospect.

The invention belongs to the technical field of hot-rolled ribbed steel bars for reinforced concrete structures, and particularly relates to an acicular ferrite type high-strength steel bar and a preparation method thereof. Steel in the steel bar comprises the following chemical components in percentage by weight: 0.25 to 0.35 percent of C, 0.40 to 0.80 percent of Si, 1.40 to 1.80 percent of Mn, less than or equal to 0.030 percent of P, less than or equal to 0.030 percent of S, 0.02 to 0.04 percent of Nb, 0.09 to 0.15 percent of V, 0.15 to 0.45 percent of Cr, 0.010 to 0.019 percent of N and the balance of Fe and inevitable impurity elements. Under the condition of existing process equipment of a production plant, the acicular ferrite type high-strength steel bar is prepared by adopting a high C, Si and Mn component design and a V and Nb combined microalloying mode and combining a rolling self-tempering process, the 700MPa-grade reinforcing steel bar with excellent comprehensive performance is produced on the premise of keeping material ductility, the yield strength of the 700MPa-grade reinforcing steel bar is greater than or equal to 700MPa, the tensile strength is greater than or equal to 830MPa, the percentage elongation after fracture is greater than or equal to 14%, the total elongation under the maximum force is greater than or equal to 9%, the anti-seismic performance is good, and the requirements of high-rise and large-span anti-seismic structures are met.

The invention discloses a compound cooling ventilator with an interior self-adaption cooling circulation. According to the compound cooling ventilator, an impeller is arranged at the front end of a motor; an inner air duct sleeves the motor; the inner air duct is located behind the impeller and a clearance is reserved between the inner air duct and the impeller; rear guide vanes are arranged outside the inner air duct; a cooling ring is arranged in front of the rear guide vanes on the inner air duct; the cooling ring comprises a group of cooling holes; a cooling hole is formed in front of each rear guide vane; the cooling holes are strip-shaped; the length direction of each cooling hole is consistent with the airflow angle of the inlet of the corresponding rear guide vane; and the distance between each rear guide vane and the impeller is smaller than or equal to one time of the chord length of the root part of fan blades. Even for a new-generation electric locomotive with the speed of 200 kilometers per hour, the requirements of light weight, compact structure and low noise can still be met.

The invention discloses a microstrip ring dendritic starch derivative and a processing method thereof, and belongs to the technical field of food processing. With starch as a raw material, the microstrip ring dendritic starch derivative is prepared through carbohydrate chain degradation and grading and glucoamylase catalysis glycoside conversion technologies and can be used as a stable carrier material of a food active factor. The method has the advantages of green environmental protection, high processing yield, low cost and the like; and the prepared product has the advantages of high branching degree, special large ring structure and good water solubility, can be applied to steady-state delivery and active protection of natural functional substances, and relates to the fields of nutritional food, medicine, daily chemicals and the like.

The invention discloses a demonstrating board of a vehicle door control system. The demonstrating board comprises a rack, a control panel and a display panel, wherein left and right vehicle doors are fixed on the two side surfaces of the rack; a vehicle door control system circuit colored schematic diagram is engraved on the display panel; an external detection terminal is mounted on the vehicle door control system circuit colored schematic diagram; a switch button, a central lock system, a rearview mirror system, an electric window system and an anti-theft system are arranged on the control panel. The demonstrating board is reasonable in design, and safe, reliable, visual and simple during teaching operation, has the functions of displaying the structural composition and operating principle of the vehicle door control system, and teaching examination, and is applicable to practical teaching of vehicle door control system detection and maintenance.

The invention provides a lens rapid switching device. The device comprises a lens barrel, a lens holder, a repulsion mechanism, a limiting part and a pressing ring. One end of the lens barrel is provided with a limiting bulge. The lens holder is arranged in the lens barrel and is provided with a lens. The outer diameter of the lens holder is in clearance fit with the inner diameter of the lens barrel. The repulsion mechanism is arranged between the limiting bulge and the lens holder, and enables the lens holder to rapidly get away from the limiting bulge. The limiting part is positioned on the sidewall of the lens barrel and is telescopic. The pressing ring is positioned at the other end of the lens barrel. The lens holder can move between the limiting bulge and the pressing ring. At a first state, the limiting part extends out, and the lens holder abuts against the limiting part under the action of the repulsion mechanism. At this time, the lens is at a first position. At a second state, the limiting part is retracted, and the lens holder moves to be at a second position to abut against the pressing ring under the action of the repulsion mechanism. In this way, the switching of the lens between the first position and the second position is realized. As a result, the switching between two particular positions is reliably realized. During the above process, the lens switching operation can be completed at the millisecond level, so that the rapid switching purpose is realized. The invention correspondingly provides a zoom lens.

The invention discloses fluorescent tube manufacturing method. It includes dusting, baking tube, sealing, exhausting, burned tip, and tact working procedure. Its feature is that the top of the fluorescent tube is connected with glass tube while dusting; the fluorescent powder slurry is absorbed from one nozzle; another one is sealed but desterilized after finishing absorbing; the fluorescent powder slurry will flow out by self gravity and atmospheric pressure; the glass tube burned tip will form cold end after exhausting. The invention has the advantages of compact structure, high light effect, and better color temperature.

The invention discloses a prestressed reinforced membrane structural body and a combined type prestressed reinforced membrane structural body. The prestressed reinforced membrane structural body comprises a capsule body, a flexible reinforced framework and annular rigid components, wherein the content of the capsule body is a fluid, the annular rigid components are correspondingly arranged at theperiphery of the corresponding end parts of the capsule body, the flexible reinforced framework is arranged outside the capsule body, when the flexible reinforced framework comprises flexible cables,the flexible cables are arranged along the direction of a plain wire or a lead of the capsule body, or is wound around the periphery of the capsule body in a staggered manner, or is arranged in a mixed mode of the plain wire and the lead, the intersection points of the flexible cables arranged along the plain wire of the capsule body and the flexible cables wound around the periphery of the capsule body in the staggered mode are connected by using nodes capable of transmitting force, and the outline size of the capsule body filled with the fluid is larger than the outline size of the flexiblereinforced framework formed by the flexible cables, and when the flexible reinforced framework comprises flexible fiber cloth, the fiber cloth completely wraps around the capsule body. The prestressedreinforced membrane structural body and the combined type prestressed reinforced membrane structural body have the advantages of being light in weight, portable, convenient to install and uninstall,high in bearing capacity and rigidity and high in impact-resistant strength.

The invention provides a soil-fixing fertility type matrix suitable for vertical green walls. The soil-fixing fertility type matrix is prepared from 25-40 volume parts of coco coir, 5-20 volume parts of turf, 10-20 volume parts of edible mushroom residues, 5-15 volume parts of mountain sand, 5-15 volume parts of vermiculite and 15-35 volume parts of zeolite. Ideally, the pH is 5.5-7.8, the EC is less than 3mS/cm, the water content is 30-50%, the content of organic matter is greater than 25%, the dry bulk density is 0.4-0.85Mg/m<3>, the wet bulk density is 0.65-1.25Mg/m<3>, and the total nutrient content is 2-5%. The invention also provides a method for preparing the soil-fixing fertility type matrix suitable for vertical green walls. The matrix has water-retaining property and fertilizer-retaining property, has the advantages of high nutrient content, low maintenance and slow nutrient loss, is suitable for urban vertical green walls and roof greening and plays an active role in improving urban ecological environment quality.

The invention relates to a die for eccentric bolt cold heading machining. The die comprises a lower die body and an upper die body, the upper die body is connected with a driving device and comprises a first stamping upper die, a second stamping upper die and an edge cutting upper die, and the lower die body comprises a first stamping lower die, a second stamping lower die and an edge cutting lower die which correspond to the first stamping upper die, the second stamping upper die and the edge cutting upper die of the upper die body in sequence; a first molding groove is formed in the lower portion of the first stamping upper die, an eccentric modeling cavity is formed in the position of an opening of the first molding groove, a hexagon modeling cavity is formed in the bottom of the first molding groove, and the connecting line of one set of opposite angles of an overlook projection of the hexagon modeling cavity is collinear with the protruding direction of the eccentric modeling cavity; and a first positioning groove is formed in the upper portion of the first stamping lower die, a second molding groove is formed in the lower portion of the second stamping upper die, a second positioning groove is formed in the upper portion of the second stamping lower die, a positioning part is arranged at the lower portion of the edge cutting upper die, the side face of the positioning part is sleeved with an annular edge cutting die body, and an edge cutting die positioning groove is formed in the upper portion of the edge cutting lower die. The die has the beneficial effects that the structure is simple, the manufacturing cost is low, the production stability is high, and the finished product quality can be effectively guaranteed.

The invention relates to the technical field of drilling machining auxiliary equipment, in particular to a flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp. The flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp comprises a base; an angle scale is connected to the base through a sliding block;a slide chute is formed in a sliding base, and the sliding base is locked with the angle scale through bolts; the sliding base is fixedly connected to a supporting post; a pawl is arranged on the supporting post through a fixing shaft; a balance weight is arranged on the pawl; a pawl clamping groove is combined with an index ratchet wheel clamping groove; the index ratchet wheel is fixedly connected to the periphery of a rotary spindle through a feather key; an index ratchet wheel is axially locked with the rotary spindle through a locking nut; a changeable positioning core shaft is connectedinto the rotary spindle; and a workpiece is locked on the changeable positioning core shaft through a holding-down nut. By adopting the flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp, the prominent problems of current oil spraying nozzle production enterprises that clamps are various; management is difficult; and manufacturing cost is high are solved. Product manufacturing cost can be greatly lowered; an on-site management level is enhanced; and meanwhile, the flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp can be promoted for use in the same industry.