60results about How to "Meet the needs of actual work" patented technology

A two-rotation two-motion four-freedom-degree parallel excitation platform comprises a movable platform, a fixed platform, four driving branches of the same structure and a middle restraint branch, wherein the four driving branches and the middle restraint branch are used for connecting the two platforms. The four driving branches are respectively of a PSS structure. In each driving branch, a linear module (in an electric driven mode) is fixed to the fixed platform and connected with a sliding block through a sliding pair, one end of a connecting rod is connected with the sliding block through a first ball pair, and the other end of the connecting rod is connected with the movable platform through a second ball pair. The middle restraint branch is of a PPU structure. A guide rail in the middle restraint branch is fixed to the fixed platform, one end of a lower connecting rod is connected with the guide rail through a first sliding pair, the other end of the lower connecting rod is connected with one end of an upper connecting rod through a second sliding pair, and the other end of the upper connecting rod is connected with the movable platform through a universal hinge. The two-rotation two-motion four-freedom-degree parallel excitation platform can achieve the space two-dimensional independent rotational freedom degree and the two-dimensional independent movement freedom degree and has the advantages of being simple and compact in structure, rapid in dynamic response, easy to install and maintain and the like.

The invention provides a simulated climate chamber of an underground coal mine thermal environment and a test method. The simulated climate chamber is provided with a control cabinet, a first computer, a temperature-humidity system, a fresh air system, a simulated air system, a human body micro-climate acquisition system, an alarm system, and a human body physiological index test system. The simulated climate chamber comprises an experiment preparation room, a test room, and an equipment room. The test method of the simulated climate chamber consists of four steps. Through the simulated climate chamber, personal protection cooling suits for mine and protective properties of the cooling suits can be subjectively and objectively evaluated. Through the simulated climate chamber, the underground coal mine thermal and humid environment can be relatively really simulated; comparatively accurate data is provided; and environment uncontrollability during a live environment test is avoided. The simulated climate chamber and the test method can meet practical operational needs.

The invention belongs to the technical field of modern intelligent manufacturing, and relates to a method for resolving the minimum spatial turning path of joints of a mechanical arm in the field of industrial robots. The method comprises the steps that an iteration origin set which can be converged to all inverse kinematics solutions corresponding to a single pose of the mechanical arm is constructed in combination with the chaos phenomenon, iteration origins are sequentially substituted into an LM iterative algorithm to resolve the inverse kinematics solutions; repeated results and results beyond the movement range of the joints of the mechanical arm are eliminated to obtain all feasible inverse kinematics solutions corresponding to the single pose; then, all the feasible inverse kinematics solutions are solved sequentially to obtain all feasible spatial moving path solutions of the joints; and finally, a search algorithm is established to calculate the minimum spatial turning path of the joints of the mechanical arm. By the adoption of the method, the problems of sudden changes of spatial path positions of the joints and large displacement of the joints are effectively solved; and the method has the advantages of high calculation precision and smooth paths and can better meet actual operating requirements of the mechanical arm.

The invention discloses a steel bar cutter, which comprises a machine frame (1), a power mechanism, a circumferential rotating device (2), a longitudinal feeding device (3), a pressing device (4), an ejecting fulcrum (5), a punching device (6), an operating console (7) and a cutting device arranged outside the machine frame, wherein a motor I in the circumferential rotating device (2) drives a plurality of rotating carrier rolls consisting of driving wheels and driven wheels in pair to rotate; a steel bar rotates with the rotating carrier rolls; the cutting device arranged outside the machineframe cuts a circle of cut mark mouth on the steel bar; the longitudinal feeding device (3) feeds the steel bar to the rear table top of the machine frame (1); the punching device (6) punches the steel bar suspended behind the ejecting fulcrum (5); and the steel bar is cut off suddenly at the cut much mouth. The steel bar cutter has the advantages of steam line operation, continuous feeding, mechanical conveying, high cutting speed, high working efficiency, simple operation, time and labor conservation and production cost reduction.

The invention relates to a power quality disturbance source working condition identifying method comprising the following steps: (1) acquiring power data of a power quality disturbance source; (2) acquiring a power data format which can be used for clustering; (3) analyzing the acquired power data; and (4) classifying the acquired power data using a clustering analysis method. The method provided by the invention overcomes the defects of the traditional power quality analysis method such as low efficiency, high cost and unsuitability for large-scale data set processing, is practical and efficient in the aspect of power quality disturbance source working condition identification, and is of low cost and good performance.

The invention discloses an order-preserving sequence pattern mining method and relates to the technical field of electric digital data processing. According to the method, a candidate mode is generated by using a mode fusion method; the number of candidate modes is reduced, and the mode support degree of the candidate modes is calculated through a series of conversion and verification steps. The defects that in the prior art, for mining frequent patterns from a time sequence, solving accuracy, generality and completeness are difficult to consider at the same time, it is difficult to ensure that important information is not lost when the time sequence is processed, and it is difficult to analyze key trends by mining the frequent patterns are overcome.

The invention discloses a method for determining the content of narcotics and metabolites thereof in sewage, which comprises the following steps: step 1, adjusting the pH value of a sewage sample to be less than 2, and filtering impurities for analysis; step 2, solid-phase extraction: activating a solid-phase extraction column by using methanol and ultrapure water in sequence before extraction, uniformly mixing the mixed deuterated internal standard working solution with a sample to be detected, transferring into the solid-phase extraction column, leaching by using ultrapure water, vacuumizing the solid-phase extraction column, eluting by using a 5% ammonia methanol solution, vacuumizing the solid-phase extraction column, and collecting eluent; blowing the eluent to be nearly dry, adding and evenly mixing 0.1% formic acid aqueous solution, wherein a 0.22-micron nylon microfiltration membrane is used for filtering, and the eluent is used as a detection material sample extracting solution for instrument detection; and step 3, carrying out liquid chromatography-tandem mass spectrometry analysis on the sample extracting solution, and detecting the contents of the drugs and the metabolites thereof. The invention basically comprises various drugs involved in the existing case, so as to meet the requirements of actual work.

The invention discloses a safety chain protection mechanism and a safety chain protection method for a vertical impact test-bed. The safety chain protection mechanism comprises a safety plug and a switching element, wherein the switching element is connected to a control system of the vertical impact test-bed. According to the safety chain protection method, a signal is sent to the control system of the vertical impact test-bed by the switching element when the safety plug is inserted into a guide pillar of the vertical impact test-bed, so that the control system cannot send an action command for descending an operating platform of the vertical impact test-bed, so as to realize the safety chain protection of the vertical impact test-bed. The safety chain protection mechanism provided by the invention has the advantages that the structure is simple, the cost is low, the operation method is convenient, the potential safety hazard caused by faulty operation in working process of the vertical impact test-bed can be eliminated and the practical working requirement is met.

The invention relates to the technical field of power transmission line monitoring, in particular to a multifunctional bird repelling device capable of visually monitoring a power transmission line. The device comprises an electricity taking and energy storing device, wherein a pan-tilt is arranged at the lower end of an energy-taking part; a ball machine, a monitoring control unit, a bird repelling unit, a weather and power transmission line icing monitoring unit and a communication unit are arranged on the pan-tilt; the electricity-taking and energy storing device provides power for the pan-tilt, the ball machine, the monitoring control unit, the bird repelling unit, the weather and power transmission line icing monitoring unit and the communication unit; the ball machine is connected with the monitoring control unit, and the monitoring control unit is separately connected with the bird repelling unit and the communication unit. The multifunctional bird repelling device capable of visually monitoring the power transmission line integrates the functions of power transmission line icing monitoring, visual power transmission line monitoring and bird repelling, and whether or not birds move around the power transmission line and whether or not the power transmission line has hidden damage dangers caused by an external force, foreign matter and the like can be determined through the ball machine and the monitoring control unit. The bird repelling unit and the communication unit are used for repelling the birds, so that the equipment cost and the installation and maintenance costs are reduced.

The invention discloses a saturated humidity generator comprising a first closed container, a second closed container, and a cooling system. A gas inlet end of a first gas circuit is a gas input end, and the gas outlet end of the first gas circuit is disposed on the upper part of the inner cavity of the first closed container. A gas inlet end of a second gas circuit is disposed on the lower part of the inner cavity of the first closed container. Deionized water is accommodated in a second closed container, and the gas outlet end of the second gas circuit is disposed under the liquid level of the deionized water in the second closed container. A gas inlet end of a third gas circuit is disposed above the liquid level of the deionized water in the second closed container, and the gas outlet end of the third gas circuit is connected with a gas inlet end of a cooling pipe of a cooling system. The cooling system comprises a substrate provided with the built-in cooling pipe, and the substrate is provided with a cooling device. A controller is connected with the cooling device in a controlled manner, and the gas outlet end of the cooling pipe is the gas output end. The saturated humidity generator can be used to convert the gas having the unknown vapor pressure input by the gas inlet opening into the gas having the known vapor pressure output by the gas outlet opening, and therefore the accurate control over the vapor pressure can be realized.

The invention discloses an intelligent material carrying robot, and belongs to the technical field of material carrying. According to the key points of the technical scheme, the intelligent material carrying robot comprises a chassis and a driving device arranged at the bottom of the chassis, a steering engine is arranged at the top of the chassis, and the driving end of the steering engine is connected with a mechanical arm mechanism; a stepping motor for driving the mechanical arm mechanism is arranged at the top end of the chassis; a V-shaped three-layer tooth-shaped mechanical claw is arranged at the free end of the mechanical arm mechanism; the front side, the rear side, the left side and the right side of the chassis are all provided with eight-way gray level sensors; a two-dimensional code recognizer and a color recognition sensor are arranged at the top of the chassis; and a micro main controller, a WIFI signal receiver and a aircraft battery are arranged at the top of the chassis. The robot can carry materials and accurately place material blocks in a specified area according to task information, and manual interaction means and other auxiliary devices do not need to be used when the robot works; and meanwhile, the moving flexibility and the control precision are high, material grabbing and accurate placing can be completed, the working range is wide, and the requirements in actual operation can be met.

The invention belongs to design techniques of electric cranes, and further relates to the improvement on the lifting mechanism of an aviation airborne electric crane. The lifting mechanism is characterized in that a steel wire rope pressing mechanism is arranged outside a rectangular window; and the steel wire rope pressing mechanism comprises two torsional springs (6), a driven gear (7b), a torsional spring shaft (8), a right torsional spring shaft seat (9), a right pressing barrel (10), two swinging arms (16), a left pressing barrel (17), a liner bushing (18), a locating pin (19), a flat key(20) and a left torsional spring shaft seat (21). According to the lifting mechanism of the aviation airborne electric crane provided by the invention, when goods are lifted by the lifting mechanismof the electric crane, that the steel wire rope is quickly wound on the winding drum smoothly and orderly is ensured, the electric crane realizes the high-frequency goods lifting function, and practical working requirements are met.

The invention relates to a redundant water draining system of high-back-pressure units of an origin station of a heat supply network. The redundant water draining system of the high-back-pressure units of the origin station of the heat supply network comprises the No.2 and No.4 high-back-pressure units of the origin station of the heat supply network. Sealing water of a feed water pump of the No.2 high-back-pressure unit of the origin station of the heat supply network and sprayed water of a low-pressure cylinder of the No.2 high-back-pressure unit of the origin station of the heat supply network are supplied to condensation water of an adjacent machine; No.1A and No.1B heaters of the origin station of the heat supply network drain water, recycle the water and feed the recycled water to deaerators of the No.2 and No.4 high-back-pressure units of the origin station of the heat supply network, and draining electric control valves are additionally arranged on return water pipelines. The redundant water draining system has the advantages that problems of incapability of reasonably distributing draining flow, complicated structure, high cost, troublesomeness in use and operation, easy influence of water levels of units, severe disturbance anomaly and excessive control of an existing condensation water delivering and recycling device of a heat supply network and a method implemented by the existing condensation water delivering and recycling device can be solved; actual work requirements of the heat supply network can be met.

The invention discloses a handling device for intelligent storage, which comprises a base, a lifting column is fixedly connected above the base, a hollow box is movably connected above the lifting column, a support plate is glued above the hollow box, and the support plate A driving device is welded on the right side of the plate, a first pulley is arranged above the driving device, the driving device and the first pulley are fixed together by a connecting rod, a baffle is rotatably connected to the left side of the support plate, and the baffle A first fixed block and a second fixed block are welded under the plate, the inside of the hollow box includes a second pulley, a main body plate, a spring and a sling, and the driving device includes an elastic block, a push rod motor and a mounting seat. The handling equipment for intelligent storage can carry out the work of conveying and placing goods at different heights. The movement effect of the push rod of the push rod motor drives the baffle to rotate, so that the baffle acts as a transmission belt to ensure better delivery of goods. .

The invention discloses a piezoelectric self-energized luminous umbrella. The piezoelectric self-energized luminous umbrella comprises an umbrella handle and an umbrella fabric, wherein a power supply module and a control module are arranged in the umbrella handle, the umbrella fabric is provided with a luminous apparatus, the power supply module comprises a piezoelectric power generation unit and an energy storage unit, two sides of the umbrella handle are provided with an extrusion deformation zone, the piezoelectric power generation unit comprises a piezoelectric body matched with the extrusion deformation zone in a contact manner and a limiting body controlling a deformation direction of the power generation unit, and the piezoelectric body is arranged at two sides of the umbrella handle and connected with the energy storage unit. Two sides of the umbrella handle are extruded by an umbrella bearer, an umbrella handle shell drives the piezoelectric body to be deformed, and the piezoelectric body generates different electric charges in the deformation process to generate a potential difference, thereby charging the energy storage unit. The luminous apparatus can be started only by turning on a switch.

The invention relates to a non-overlapping adaptive frequent sequence pattern mining method, and belongs to the field of sequence pattern analysis of data mining. According to the method, candidate mode generation is reduced by using a mode growth strategy, and a single-branch network tree is constructed through a depth-first strategy to improve the support degree calculation efficiency; the problem of non-overlapping adaptive frequent sequence pattern mining is solved; according to the method, under the condition that gap constraints are not given, the non-overlapping frequent pattern miningis realized; the problem that the existing sequence pattern mining technology is difficult to consider the flexibility, high efficiency and completeness of mining at the same time is solved; the method is convenient for a user to use, the time complexity and the space complexity can be effectively reduced, and complete and valuable information is obtained while the non-redundancy of a mining result is ensured.