57 results about "Mechanical resistance" patented technology

The invention provides a speed regulation purging control method and system for a steam soot blower, and relates to the technical field of steam soot blower control. Stroke position data of a soot blowing gun barrel and a current signal of a driving motor are obtained and synchronously associated, and the speed regulation purging control method and system for the steam soot blower can be realized on the basis of data collected in a plurality of purging cycles. And identifying current anomalies which appear for multiple times at the same stroke position and have consistent current amplitudes and change forms, and identifying the stroke position as a fixed mechanical resistance position. For each fixed mechanical resistance position, a dynamically adjustable mechanical resistance reference value is determined. In the real-time purging process, according to the mechanical resistance reference value, the actual coking resistance signal value is obtained through separation from the total current value of the driving motor, and therefore the purging parameters of the soot blower are adjusted, the service life of the soot blower nozzle and the boiler heating surface can be remarkably prolonged, the operation cost is reduced, and the energy consumption is reduced. And intelligence and refinement of soot blower control are realized.

The invention provides a thermal insulation structure of a rocket engine injector and a reliability assessment method thereof. The thermal insulation structure can solve the problems that the temperature of the upper surface of an injector body is too high and the use reliability is poor. The invention provides a thermal insulation structure of a rocket engine injector. The thermal insulation structure comprises an injector body, a thermal insulation structure body, a boss and an arc-shaped groove. The outlet section of the injector main body is improved into a multi-boss matched arc-shaped groove structure from a traditional solid structure, so that the thermal resistance conducted to the upstream of the injector by a high-temperature spray pipe is increased, the temperature of the upper surface of the injector main body can be reduced, the design difficulty and the production cost of upstream parts are further reduced, good mechanical resistance and high-temperature structural strength are ensured, and the service life of the injector is prolonged. The structural weight is reduced while the central flow channel is not affected, and the problems that the temperature of the upper surface of the injector body is too high and the use reliability is poor are solved.

A stairway for aircraft is disclosed which includes first and second stair halves, one which nests in the other. The first half is hinged to the doorway and the second half is hinged to the first half. A mechanical resistance system uses different devices to allow for the airstair to be damped when switching between modes. A retracting arrangement is also disclosed.

The invention is directed to a micromechanical device for sorting at least two distinct fractions of target particles and at least one non-target target particle from each other, all suspended in a fluid, comprising: - a source of magnetic flux (1) - a movable member (2) comprising permeable magnetic material (3) wherein the movable member (2) is moved from a first position (4) to a second position (5) and / or one or more third positions (6) by applying a magnetic flux to the movable member (2) - a sample inlet channel (7) through which the fluid flows into the micromechanical device - a first output channel (8) which the movable member (2) diverts the non-target particles while being in the first position (4) - a second output channel (9) into which the movable member (2) diverts one distinct fraction of the target particles while being in the second position (5) - one or more third output channels (10) into which the movable member (2) diverts further distinct fractions of the target particles while being in one of the one or more third position (6) - a spring (11) attached to the movable member (2) providing mechanical resistance to the movable member (2) when moving from the first position (4) to the second position (5) and / or to one or more of the third positions (6) characterized in that the spring (11) has non-linear elastomechanical properties when the movable member (2) is at the second position (5) and / or at one or more of the third positions (6).

This invention relates to the field of intelligent manufacturing and concrete product production equipment control technology, specifically an intelligent control system for the entire production process of concrete poles. The system includes: a reference parameter identification unit for performing a stepped acceleration test and calculating the empty mold impedance parameter characterizing the inherent mechanical resistance of the mold; a load torque observation unit for acquiring the electromagnetic drive torque in real time and extracting the net load torque acting only on the concrete material; a rheological and distribution state analysis unit for calculating the dimensionless eccentricity factor characterizing the uniformity of material distribution; and an adaptive closed-loop control unit for generating corresponding control commands: an emergency braking command is output when the eccentricity exceeds the safety limit, a constant-speed shearing command is output when the rheological state does not meet the standard, and an adaptive acceleration command is output when the rheological state meets the standard and the eccentricity is within the safe range. This invention solves the problem of the inability to directly observe the material state within a closed mold, achieving transparent monitoring of the physical properties of concrete.

The skin-care heat-insulating film car cover adhesive tape comprises a release layer, a mounting adhesive layer, a functional layer, a structural adhesive layer, a base material layer, a heat repairing layer and a protective layer which are sequentially stacked, the functional layer comprises a TPU substrate layer, a transition layer is arranged on the TPU substrate layer, at least three composite layers are arranged on the side, away from the TPU substrate layer, of the transition layer, each composite layer comprises a reflecting layer and a dielectric layer, and the dielectric layer is located on the side, away from the transition layer, of the reflecting layer; the transition layer is made of chromium or titanium; the reflecting layer is made of at least one of gold, silver, titanium, nickel, chromium and indium tin oxide; and the material of the dielectric layer is at least one of SiO2, Al2O3, TiO2 and ZnO. According to the invention, the polycarbonate type TPU base material with high permeability and high chemical and mechanical resistance is matched with the high-weather-resistance and high-heat-insulation functional layer to obtain the skin-care, high-heat-insulation, impact-resistant, high-weather-resistance and explosion-proof automobile cover adhesive tape, and the automobile cover adhesive tape is suitable for automobile sunroofs pursuing safety, explosion-proof performance, high heat insulation and high weather resistance.

A textile structure for manufacturing protective fireproof clothing and / or linen with high mechanical resistance, highly resistant to UV rays, washing and rubbing, for military use for users who may come into contact with flames and / or suffer the effects of other sources of heat by contact, radiation and convection, said textile structure being characterized in that it is made from a plurality of plant fibers that are eco-sustainable and environmentally-friendly, compostable and biodegradable, wherein, to a main matrix consisting of seaweed fibers, or alginate fibers, other fibers are mixed, said matrix of alginate fibers being present in the final textile structure in a range between 25% and 60%, the remaining part being compensated by plant-based fibers, such as hemp fibers, viscose fibers, beech fibers, bamboo, cotton, viscose or the like.

The application relates to the technical field of electric propulsion, in particular to a high-structural-stability grid assembly, which comprises a screen grid, a ceramic grid sheet, an accelerating grid and a mounting assembly, wherein the ceramic grid sheet is arranged between the screen grid and the accelerating grid; the grid holes of the ceramic grid sheet are arranged in correspondence with the grid holes of the screen grid and the accelerating grid; the screen grid, the ceramic grid sheet and the accelerating grid are fixedly installed together through the mounting assembly to form a solid grid assembly. The application adopts the ceramic grid sheet with high strength and high density, combines the grid assembly into a solid whole, improves the mechanical resistance, and sets the ceramic grid sheet between the grids to prevent the opposite deformation due to thermal stress during the working process of the grid assembly. Compared with the existing products, the force and thermal environmental stability of the grid assembly is remarkably improved.

The invention belongs to the field of inertial measurement, and discloses a thermal separation inertial measurement device, which comprises a cavity, and a body assembly, a detection circuit assembly, a support frame, a shock absorber assembly, a baffle plate, a public light path assembly, a measurement circuit assembly, a secondary power supply assembly and a cover plate which are arranged in the cavity, and the cavity comprises an outer cover, a side cover, a flange and a bottom cover, the outer cover, the side cover and the flange are connected with the bottom cover, the body assembly comprises an angular velocity inertia sensitive part, a linear acceleration inertia sensitive part, a body and an accelerometer flexible circuit, the flange is of an H-shaped structure, an upper sub-cavity and a lower sub-cavity are formed, and a high-heat power part and an inertia part in the body assembly are installed on the front face and the back face of a partition plate in the H-shaped structure respectively. The high-heat-power components are installed on the side vertical face and the upper and lower end faces of the flange away from the body assembly. The invention has enough inherent frequency and good mechanical resistance, and ensures the environmental adaptability of a mechanical sensitive device.

The invention relates to a pulverizer control method and system based on destruction target recognition and a medium, and belongs to the technical field of intelligent control. The control method comprises the following steps: collecting multi-modal sensing data of a target object; identifying a medium type, extracting physical attribute features, and generating medium feature data; querying a preset parameter mapping table, generating a dynamic compensation coefficient in combination with the temperature and humidity data, and outputting an initial crushing control parameter; a crushing execution mechanism is driven, a mechanical resistance value is monitored in real time in the crushing process, and when the deviation between the monitored mechanical resistance value and an expected value exceeds a dynamic threshold value, an initial crushing control parameter is adjusted in real time; performing spectrum scanning on the crushed residues, generating residue distribution data, performing destruction compliance verification, and outputting a verification report; and storing the medium characteristic data, the crushing control parameters and the residue distribution data into a training set, and regularly updating a preset parameter mapping table. According to the invention, the high-standard requirement on physical medium disposal in a modern high-confidentiality environment can be met.

The utility model belongs to the technical field of pipe jacking construction, and discloses a socket type jacking pipe. The connecting structure comprises pipe joints and a connecting piece, a socket pipe is arranged at one end of each pipe joint, a spigot pipe is arranged at the other end of each pipe joint, inserting holes are formed in the bearing end face of each socket pipe and the inserting end face of each spigot pipe, and the spigot pipe of one pipe joint is aligned with and inserted into the socket pipe of the other pipe joint; the connecting piece is arranged at the joint of the spigot pipe and the socket pipe, barb parts are arranged at the two ends of the connecting piece, the section shape of the barb parts is the same as that of the insertion holes, and the barb parts are in one-to-one correspondence and are clamped in the insertion holes in a limiting mode. According to the arrangement, the barb parts and the inserting holes are connected in the clamping mode, so that the barb parts are difficult to pull out after being inserted into the inserting holes, the mechanical resistance of connection of the two pipe sections is effectively increased, gaps are not prone to being generated between the pipe sections due to interference of the external environment, leakage of underground water is avoided, and the service life of the pipe sections is prolonged. And the connection stability between the pipe joints is also improved.

The utility model relates to a combined type outer wall anchor bolt structure which comprises a top plate, vertical plates and a bottom plate, the vertical plates are symmetrically and fixedly arranged between the top plate and the bottom plate, the top plate and the bottom plate are located on the same axis, and a rotating shaft is arranged between the vertical plates on the two sides. The two ends of the rotating shaft are rotationally connected with the bottom face of the top plate and the top face of the bottom plate correspondingly. Arc-shaped extending pieces are symmetrically and fixedly arranged on the two sides of the top face of the bottom plate, the vertical plate is arranged between the extending pieces on the two sides, an upper driving part is arranged on the rotating shaft, and the rotating shaft can drive the upper driving part to move along the axis of the rotating shaft and drive the extending pieces on the two sides to extend outwards with the connecting positions of the extending pieces and the bottom plate as rotating points. According to the anchor bolt, the arc-shaped extending pieces are driven by the rotating shaft to extend outwards to form a limiting extrusion structure, the extending pieces are tightly meshed with the hole wall of the wall body, drawing force and shearing force are resisted through cooperation of friction force and mechanical resistance, and the slippage risk of a traditional anchor bolt is avoided.

The utility model relates to a movable chain wheel ventilation cabinet which comprises a cabinet body, front stand columns and rear stand columns are arranged on the cabinet body, a window opening is formed between the front stand columns, a window sliding up and down is arranged on the window opening, a counterweight assembly is connected to the rear stand columns in a sliding mode, the window is connected with a main chain, and the other end of the main chain is fixedly connected with a hanging piece. A movable chain wheel is rotationally connected to the hanging piece, an auxiliary chain is wound on the movable chain wheel in a matched mode, one end of the auxiliary chain is fixedly connected to the counterweight assembly, and the other end of the auxiliary chain is fixedly connected to the rear stand column. According to the movable chain wheel ventilation cabinet, the mechanical relation between the movable chain wheel and the balance weight system is introduced to be optimized again, the requirement for the weight of the balance weight block is greatly reduced, mechanical resistance is remarkably reduced, operation is more convenient, the structure is light, cost is saved, and energy consumption and abrasion are reduced.

The invention relates to a method for constructing a roof, the roof being intended for a building having a perimeter enclosure, the method having the production of a formwork configured to support the roof during its construction and to allow the casting of a slab, the construction of a supporting structure configured to ensure that the roof is mechanically resistant and that the roof is attached to the building receiving the roof, the casting of the slab performing a bonding material function, the slab being configured to transfer mechanical stresses within the supporting structure, and the construction of an external girdling, referred to as a cornice, connecting the roof to the building by girdling both a portion of an outer surface of the perimeter enclosure of the building and a portion of the girdling structure attached to the building, in order to increase the mechanical resistance of the roof to being torn off.

A bridge (2) comprising a support slab (20) having an upper face arranged to support a traffic lane (1) and a lower face opposite the upper face, said bridge (2) further comprising at least one bearing element (22) of said bridge (2) and a plurality of anchor rods (21) secured on one side to the lower face of the support slab (20) so as to improve its mechanical resistance, and on the other side to said bearing element (22), said support slab (20) being at least partially made of concrete and the plurality of anchor rods (21) being at least partially made of steel, said support slab (20) at least partially encasing said anchor rods (21) and said bearing element (22) at least partially encasing said anchor rods (21). Figure 1

The invention relates to the technical field of electrical parts, in particular to a litz wire, and the litz wire comprises a plurality of circuit layers which are arranged layer by layer; the circuit layer comprises an insulating main body and a conductor, and the conductor is arranged on the insulating main body; the electric conductor comprises a plurality of electric leads which are arranged at intervals; the conductors of two adjacent circuit layers are electrically connected; the top layer is arranged on the first circuit layer; and the bottom layer is arranged on the last circuit layer. According to the Litz wire provided by the invention, the winding is etched on the insulating main body through the etching process, so that the copper consumption is reduced, the overall weight of the Litz wire is greatly reduced, additional wiring or welding is not needed, the fixing step is reduced, and the overall weight and size are further reduced; the integrated design of the electric conductor and the insulating main body enables the cable to have better mechanical resistance, and can meet the reliability requirements of strict scenes such as a vehicle gauge grade and an industrial grade.

This sun protection assembly includes a structure, at least one fabric (18, 26, 28, 30) fixed to the structure at at least first, second and third non-aligned fixing points, at least one permanent attachment member (32) for securely fixing said fabric (18, 26, 28, 30) to the first fixing point, and at least one attachment member with reduced mechanical resistance (34) compared to the mechanical resistance of said permanent attachment member (32) for connecting said fabric (18, 26, 28, 30) to the second fixing point, said reduced mechanical resistance attachment member (34) being capable of fixing said fabric (18, 26, 28, 30) to the second fixing point and capable of releasing the fixing at the second fixing point when the stress exerted on said reduced mechanical resistance attachment member (34) exceeds a predetermined threshold. Figure for the summary: Fig 3

A bridge (2) comprising a support slab (20) having an upper face arranged to support a traffic lane (1) and a lower face opposite the upper face, said bridge (2) further comprising a plurality of reinforcing members (21) attached at least to the lower face of the support slab (20) so as to improve its mechanical resistance, said support slab (20) being at least partially made of concrete and the plurality of reinforcing members (21) being at least partially made of weathering steel, said support slab (20) at least partially encasing said reinforcing members (21). Figure 1

In a process for manufacturing an electric cable connection assembly 1 for connecting solar panels, a circumferential surface layer 6 of the respective cable sheath is partially removed by exposure to light at end portions of at least two individual cables which are connected to a respective exposed conductor end portion 5. After forming an electrically conductive connection between the cables 2, the cables 2 are introduced into the cavity 18 of an injection molding tool 15 and a heated, plastically deformable plastic granulate consisting of the same material as the cable sheath is injected into the cavity 18. The plastic material crosslinks homogeneously. An insulating sheath formed in this way is characterized by improved moisture protection and mechanical resistance.

The invention relates to the technical field of cement mixing, in particular to energy-saving building cement grouting material pulping equipment and method.The energy-saving building cement grouting material pulping equipment comprises a U-shaped frame and a supporting frame fixedly connected with the top of the U-shaped frame, the top of the supporting frame is in hoisting connection with a vibration part through a traction assembly and a pushing assembly, and a center control module is fixedly arranged at the top of the supporting frame; the central control module is in control connection with the vibration part, the central control module is in communication connection with the sensor module, the central control module is used for calculating a cement grouting material mechanical resistance value according to a detection result of the sensor module, and the cement grouting material mechanical resistance value is used for judging the current cement grouting material exhaust processing degree; aiming at the problem that a traditional vibration device cannot accurately vibrate and exhaust cement grouting materials, the device detects the mechanical resistance value of the cement grouting materials so as to judge whether the content of bubbles in the cement grouting materials meets the standard or not.

The invention discloses a casing running trafficability prediction method and device, and relates to the technical field of data processing. The method comprises the following steps: acquiring well drilling data corresponding to each measuring point contained in a target open hole well section; calculating a casing axial force, a mechanical resistance value and a comprehensive friction resistance value corresponding to each measuring point according to the drilling data corresponding to each measuring point and the corrected mechanical model; according to the mechanical resistance value and the comprehensive friction resistance value corresponding to each measuring point, the casing running safety coefficient corresponding to each measuring point is calculated; calculating a sine buckling critical load and a spiral buckling critical load corresponding to each measuring point according to the drilling data corresponding to each measuring point; and determining a casing running trafficability prediction result corresponding to the target open hole well section according to the casing running safety coefficient, the casing axial force, the sine buckling critical load, the spiral buckling critical load and the comprehensive friction resistance value corresponding to each measuring point.

The invention relates to a material performance detection device which is used for detecting the mechanical resistance of a sample in a high-pressure hydrogen environment, the sample is of a hollow tubular structure, and the detection device comprises two sample clamps which are respectively clamped at the two ends of the sample; the oxidation pond is filled with a sodium hydroxide solution, and the sample clamp and the sample are contained in the oxidation pond; the three-electrode system is used for monitoring the hydrogen permeation amount of the sample, the three-electrode system comprises an auxiliary electrode, a reference electrode and a working electrode which are contained in the oxidation pond and jointly connected to the electrochemical measurement equipment, the auxiliary electrode and the sample are arranged at an interval, and the reference electrode and the working electrode are arranged at an interval and abut against the sample; the hydrogen supply part comprises a hydrogen pipeline, and the hydrogen pipeline penetrates through the oxidation pond and is in gas communication with one end of the sample. The hydrogen permeation amount of the sample is obtained in real time while the material performance of the sample is tested, so that the sample detection requirement is met, and the test risk is reduced.

The invention relates to the technical field of automatic warehouse management, and discloses a bogie stereoscopic warehouse management method and system, and the method comprises the steps: building a dynamic control limit for a goods allocation based on a historical operation coordinate, and carrying out the real-time diagnosis of a positioning coordinate of a new operation, thereby distinguishing the chronic evolution and acute mutation of a physical structure, a dynamic offset correction process or a structure locking process is triggered respectively; meanwhile, the load of a lifting motor is monitored in real time in the goods taking operation, so that abnormal mechanical resistance is recognized and avoided; according to the method, the management system obtains multi-dimensional and multi-time-scale perception capability for the physical world, the system can adapt to chronic evolution of the structure, also can respond to acute sudden change in time, and insight into hidden physical risks in the operation process, so that the reliability of the system is changed from depending on the rigidity of hardware to the reliability of the system. The method is converted into intelligent adaptation and risk management of an uncertain environment depending on an information technology.

The invention discloses a pressure control method and system for a tablet press, and relates to the technical field of pressure control, and the method comprises the steps: directly representing the physical state of a punch through a pressure rise rate and a peak holding duration by adopting a pressure curve characteristic-wear state-dynamic compensation cascade control logic; when the pressure transmission efficiency is reduced due to the abrasion of the punch, the rising rate is obviously reduced due to the increase of mechanical resistance, and the peak holding time is shortened due to the reduction of elastic deformation, the system calculates a compensation factor phi in real time according to the rising rate, and the original target pressure value is increased by 1 / phi times, so that the actual bearing pressure of the material is consistent with a set value; and the fatal defect that the feedback distortion of the sensor cannot be identified by the system is fundamentally solved.

The invention relates to the technical field of copper material manufacturing, and discloses a preparation device for a high-conductivity copper flexible connecting wire, which comprises a first winding wheel for releasing an unoiled copper wire and a second winding wheel for storing and driving an oiled copper wire to move, and is characterized in that a servo motor is mounted on the side part of the second winding wheel; an oil coating assembly is arranged between the first winding wheel and the second winding wheel; the oiling assembly comprises a supporting frame, a first smearing wheel and a second smearing wheel, the first smearing wheel and the second smearing wheel are arranged on the supporting frame, the first smearing wheel comprises an outer shell fixedly installed above the supporting frame, a rotating wheel is rotationally installed in the outer shell, and a plurality of sponge coating brush heads are arranged on the outer side of the rotating wheel in a circumferential array mode and used for oiling passing copper wires. An anti-oxidation oil pool is arranged at the bottom of the outer shell, and the second smearing wheel and the first smearing wheel are symmetrically arranged and are the same in internal structure. According to the scheme, the friction coating effect in the oil coating process is guaranteed, the mechanical resistance when the copper wire passes through is reduced, and the continuity of the oil coating technology is improved.

The utility model discloses a handheld tension measuring device for a fiber spool, belongs to the technical field of fiber spools, and aims to solve the problems that the currently used fiber unwinding mode is passive unwinding, the rotation resistance of the spool is increased mechanically, and the tension of the fiber is influenced due to loosening caused by continuous rotation and mechanical resistance. The utility model relates to a constant-tension fiber unwinding system, which solves the problems that a conventional constant-tension fiber unwinding system is high in cost and maintenance cost, a handheld fiber tension tester is low in efficiency during use, and detection is inconvenient when the cardinal number of fibers is large in the prior art due to the fact that the existing constant-tension fiber unwinding system cannot find problems in the first time as shown in Figure 2, and comprises a servo motor, and an output shaft of the servo motor is connected with a friction guide wheel; a spool is arranged on one side of the friction guide wheel, and fibers are arranged on the spool; according to the utility model, personnel inspection efficiency is improved; the product quality is improved; and the device can be used for actively unwinding fibers in large-scale use, so that a large amount of cost is saved.

A biodegradable horticultural mulch film (1) consisting of an arrangement of non-woven natural fibers (2) forming a longitudinal plane, said arrangement comprising hair (3) and flax fibers (4) mixed and assembled into a consolidated non-woven arrangement, the flax fibers constituting a mass percentage of between 35 and 80% of the total fibers, and more preferably a mass percentage of between 45 and 55% of all the film's fibers. FIGURE 2

The invention relates to the technical field of intelligent manufacturing and concrete product production equipment control, in particular to a concrete pole production full-process intelligent control system, which comprises a reference parameter identification unit used for executing a stepped speed-up test and resolving an empty mold impedance parameter representing inherent mechanical resistance of a mold; the load torque observation unit is used for acquiring electromagnetic driving torque in real time and stripping out net load torque only acting on concrete materials; the rheology and distribution state analysis unit is used for resolving a dimensionless eccentricity factor representing the material distribution uniformity degree; the self-adaptive closed-loop control unit is used for generating corresponding control instructions: outputting an emergency braking instruction when the eccentricity degree exceeds a safety limit, outputting a constant-speed shearing instruction when the rheological state does not reach the standard, and outputting a self-adaptive acceleration instruction when the rheological state reaches the standard and the eccentricity degree is within a safety range; the problem that the material state in the closed mold cannot be directly observed is solved, and perspective monitoring of the physical properties of the concrete is achieved.

The utility model relates to the technical field of voice coil diaphragms, in particular to an outer edge composite diaphragm, which comprises a diaphragm assembly, the diaphragm assembly is arranged on a carrier shell, a magnetic circuit structure is arranged in the carrier shell, a voice coil is arranged on the carrier shell and positioned in the magnetic circuit structure, the diaphragm assembly comprises an outer edge assembly and a ball top part, and the ball top part is arranged on the outer edge assembly. One end of the voice coil is fixedly connected with the voice coil base station, and an elastic arc sheet is fixedly arranged between the voice coil base station and the outer edge assembly. According to the outer edge composite diaphragm, the secondary outer diameter part of the outer ring adopts the composite structure, the force resistance, the strength and the elasticity of the diaphragm can be improved, the force resistance of the outer edge composite diaphragm can be adjusted by the composite structure, the overall elasticity of the diaphragm can be finely adjusted, the effects of alto and high pitch are not influenced in the use process, and the service life of the diaphragm is prolonged. The bass sensitivity, the optimal resonance point of the low frequency and the dynamic width of the bass can be adjusted.