61results about How to "Uniform layout" patented technology

The invention provides a vehicle-mounted fruit tree fertilizing and trenching machine which mainly comprises a walking mechanism, a power mechanism, a transmission mechanism, a trenching mechanism, and a rack, wherein the walking mechanism is an farm-oriented tricycle, the power mechanism comprises a diesel engine and a hydraulic system, and is used for driving the walking mechanism, the transmission system and the trenching mechanism; the transmission system comprises a lifting mechanism capable of enabling the trenching mechanism to move up down, a rocker arm mechanism capable of enabling the trenching mechanism to move in the horizontal direction, a flexing mechanism capable of enabling the trenching mechanism to flex, and a drive mechanism capable of driving a drill bit of the trenching mechanism to rotate; the trenching mechanism comprises a center drill bit capable of moving up and down, two inner drill bits and two outer drill bits which are located at two sides of the center drill bit, and the five drill bits are integrated so that the straight line trenching can be carried out along a fruit tree, and arc-shaped trenching can be carried out around the fruit tree. By combining a lifting frame and a rocker arm, the vehicle-mounted fruit tree fertilizing and trenching machine is small in vehicle body width, uniform in hole distance, dense in quantity, and high in trenching efficiency, and can be widely applied to trenching and fertilizing operations for peach trees, pear trees, apple trees and the like.

The invention discloses a connection node construction of a concrete-filled square steel tube column and a rectangular section steel beam. The connection node construction is formed by the concrete-filled square steel tube column, the rectangular section steel beam, a right-angle connecting plate, a T-shaped triangle rib plate, a high-strength bolt, and a toggle pin on the top face of the steel beam. The connection node construction is simple, and the stress is clear. The amount of the steel for the connection node construction is less, and the connection node construction is only installed at one side of the column provided with the beam, so the composite cost is lower. The design of the beam column connection node is the ductile failure mode that the beam end is damaged by the tension, the obvious symptom and the duration time are existent before the damage, and the whole structure cannot be collapsed by the local failure. The connection of the steel beam and the concrete-filled steel tube column is firm, the integrality is good, the node rigidity is large, the assembly is simple and the construction period is short. New building rubbishes are not generated, and the requirements of housing industrialization and environmental protection are satisfied. The connection node construction is a novel node connection mode suitable for the connection of the current lower-layer and multi-layer light steel frame housing construction beam columns.

The invention discloses an intelligent heterogeneous sensor array of an aircraft sheath, and belongs to the sensor field. The sensor array comprises a secondary array sensor group and a primary arraysensor group, the secondary array sensor group replaces any main sensor unit in an M*N sensor group to form the heterogeneous sensor array, and the secondary array sensor group is composed of secondary sensor units in M' rows and N' columns; the M*N sensor group is composed main sensor units in M rows and N columns; and the primary sensor group is formed by residual sensor units, except the main sensor unit replaced by the secondary array sensor group, of the M*N sensor group. The sensor array layout is optimized, a small number of sensors is used to obtain effective data information almost equivalent to the larger scale of homogeneous sensor array, arrangement of useless measurement points is avoided, function expansion in a larger area is easy to realize, and the sensor array can be integrated into the aircraft sheath.

The invention relates to a method for generating an IED network graph. The method comprises the following steps that first, a network topology is generated, wherein the network topology of an IED equipment layout object is generated according to sub-network entries corresponding to communication entries in model data; second, automatic layout is carried out, wherein IED equipment which is directly connected with a subnet is allocated first, and then grouping layout is conducted within a subnet range until the overall network layout is completed; third, grid wiring is carried out, wherein a grid reference line is set according to all graphics primitives which are completed in the second step in a layout mode, grid line cross points are traversed in all directions, and finally a connecting line path of the graphics primitives is achieved; fourth, layout examination is carried out, the layout is completed when no intersection exists, and secondary line connection is performed according to the connecting line crossed condition when intersection exists; fifth, an IED network is generated automatically, and the network graph is output. By the adoption of the method, the defect of a single algorithm is overcome, a more efficient algorithm with a reasonable logical layout can be developed according to a network graph model, the method can be adapted to different data model demands, network topology data modeling is facilitated, and the generated IED network graph is clear in line.

The invention relates to a table-shaped lampblack mist purifier which comprises a table surface, an annular air suction chamber, an electric heating oven, an air inlet of the electric heating oven, a centrifugal fan, a drain pipe, a water pump spray pipe, an oil suction air inlet pipe, a water tank, an oil-water separation chamber and a water pump, wherein the annular air suction chamber is shaped as a cover and is just above the electric heating oven; the air inlet of the electric heating oven at the lower part of the electric heating oven is at the lower part of the annular air suction chamber; the air inlet of the electric heating oven is connected to the centrifugal fan at the lower part of the electric heating oven; the air outlet of the centrifugal fan is discharged through the oil suction air inlet pipe; uniformly distributed air holes of the air suction chamber are formed in the annular air suction chamber shaped as the cover along the circumference; and the oil suction air inlet pipe is communicated with the annular air suction chamber shaped as the cover. The table-shaped lampblack mist purifier disclosed by the invention is wider in application and uniform in arrangement; air suction holes are arranged nearby, so that an air suction path is short; particularly, the table-shaped lampblack mist purifier is clean and complete for eliminating lampblack, small in volume and high in efficiency and is capable of recycling waste oil; the table-shaped lampblack mist purifier is easy to be designed to be mute; dinner environmental requirements of hot pots, barbecues or griddles are satisfied; and furthermore, lampblack can be recycled.

The invention provides a method and device for marking electronic map road display text. The method comprises the steps that an electronic map at a first display level is obtained; a first text buffer area is established on a first road with display text needing marking; existing display text located in the first text buffer area on the electronic map is obtained, a display area of the existing display text is calculated, and the display area of the existing display text is removed from the first text buffer area to obtain a second text buffer area; a third text buffer area established on a second road with display text needing marking is obtained, the third text buffer area and the second text buffer area have an overlapped area, and the overlapped area is removed from the second text buffer area to obtain a text marking area of the first road at the first display level. By the adoption of the method and device, the work for manually adjusting electronic map marked text can be replaced, marking work of expressway display text is completed with one step, and it can be ensured that different pieces of display text do not overlap one another.

The invention discloses a pin inserting type wooden comb machining device and a using method. The pin inserting type wooden comb machining device comprises a base, a supporting rod, a fixing plate, apower part, an up-down pressing mechanism and a left-right clamping mechanism, wherein a to-be-machined part is arranged on the base, the upper end of the supporting rod is connected with the fixing plate, the lower end of the supporting rod is connected with the base, the power part is installed on the fixing plate, the power part is connected with the up-down pressing mechanism, the left-right clamping mechanism is connected with the up-down pressing mechanism and is in linkage with the up-down pressing mechanism, and the to-be-machined part is located under the up-down pressing mechanism. According to the pin inserting type wooden comb machining device, the structure is ingenious and reasonable, the to-be-machined part of a comb can be clamped left and right synchronously, moreover, pressurization machining can be carried out from the upper part, and the efficient and rapid effects are achieved.

The invention discloses a one-key distress call system based on cloud computation and realization method thereof, and belongs to a distress call system. A technical problem to be solved by the invention is how to rapidly and accurately realize the distress call, thereby lowering the condition that the first-aid effect is impacted since the late distress call delays the first-aid time. The adopted technical scheme is as follows: the one-key distress call system based on the cloud computation comprises a distress call point coordination information management module, a distress call dispatching module and a first-aid mechanism and first-aid vehicle dispatching management module. The invention further discloses a realization method of the one-key distress call system based on the cloud computation. The method comprises the following steps: (1) triggering a distress call button; (2) sending distress call information of the distress call button to a coordinate maintenance system; (3) positioning a distress call point geographic position coordinate through the coordination maintenance system; and (4) querying and locking the nearest first-aid mechanism and first-aid vehicle according to the distress call specific position through the distress call dispatching module, and sending a first-aid task to the first-aid mechanism and first-aid vehicle dispatching management module.

The invention provides a double-acting impeller pump, and belongs to the technical field of mechanical engineering. The problems of high noise and large pump body vibration of the traditional double-acting impeller pump are solved. The double-acting impeller pump comprises a front shell, a back cover, a stator, an oil outlet distribution disc, an oil inlet distribution disc and a rotating shaft, wherein a rotor which is installed on the rotating shaft is arranged in the stator; the cavity between the front shell and one side of the oil outlet distribution disc is formed into an oil inlet chamber, and the cavity between the back cover and the other side of the oil outlet oil distribution disc is formed into an oil outlet chamber; a plurality of guide grooves and blades formed in the guide grooves in a sliding mode are formed in the stator, every guide groove comprises a guide surface and a groove bottom which are mutually parallel, oil supply holes which are communicated with the groove bottoms are all formed in the oil inlet oil distribution disc and the oil outlet oil distribution disc, a pressure groove which intersects the guide grooves is arranged on the rotor, a plurality of through holes are formed in the oil outlet oil distribution disc, the through holes penetrate the oil outlet chamber, and the pressure groove and the through holes are placed on the same shaft diameter. The double-acting impeller pump has the advantages of small noise and low rotating speed.

The present invention features the feather fan making process including the steps of: material sorting, sterilizing, killing insects, stoving, adhering and mounting handle. The feather fan has the advantages of easy making, tide and firm feather, no insect and long service life.

The invention relates to a high-altitude cable. The high-altitude cable comprises an oil absorbing layer, a fireproof layer, and a wire core layer, an insulation layer, a first heat conducting layer, a shielding layer, a waterproof layer and a second heat conducting layer, which successively sleeve the oil absorbing layer from inside to outside. Insulation heat conducting liquid is absorbed on the oil absorbing layer. The wire core layer comprises electric wires which are annularly distributed along the radial cross section of the cable, and heat conducting materials filling the gaps between the electric wires. Each electric wire comprises a wire core and an insulation rubber layer wrapping the exterior of the wire core. Multiple long strip-shaped cambered surfaces extending in the length directions of the cables are uniformly arranged on the outer circumferential face of the second heat conducting layer. The cambered surfaces are distributed on the radial cross sections of the cable in a polygonal manner. The middle parts of the radial cross sections of the cambered surfaces are inwards recessed towards the center of the cable. Two sides of middle parts of the radial cross sections of the cambered surfaces outwards protrude towards the exterior of the cable. According to the invention, by effectively using rain and wind outdoors, heat dissipation can be performed on the cable itself, thereby turning the harm into a benefit, so the service lifetime of the cable is effectively prolonged.

The invention discloses a suspension mushroom-growing chamber, which comprises the following parts: steel frame, wall and suspension rack, wherein the steel frame is frame structure, which is composed of wall column (4), support column (7) and beam (5); the wall column lies in the wall; the support column (7) is arranged; the bottom of wall column and support column is connected with foundation (10); the top is integrated with beam (5) to form 'tic-tac' structure; the wall is composed of multi-layer covering material; the wall column (4) and beam (5) are set in the wall; the suspension rack with suspension beam support beam (6) and suspension beam (11) is set on the support column (7); the suspension beam support beam (6) is fixed on the adjacent support columns (7); multiple suspension beams (11) are connected on the suspension rack beam to form crowded hanger beam. The invention possesses moisture and insulating function with high spatial utility, which reduces manufacturing cost.

The invention provides a supersonic-speed air ejector. The supersonic-speed air ejector comprises an air inlet pipe, a pressure-resistant shell and a mixed diffuser pipe which are connected in sequence, and further comprises a plurality of sets of ejection pipes, wherein the plurality of sets of ejection pipes are installed at different cross section positions of the pressure-resistant shell, andthe ejection pipes are evenly distributed in an ejection channel coaxial with the air inlet pipe; Laval nozzles are arranged at the outlet ends of the ejection pipes and evenly distributed on the inlet cross section of the mixed diffuser pipe; and the air source of each set of ejection pipes is one path, and a plurality of paths of air sources are independently controlled. According to the supersonic-speed air ejector, by adopting a method of installing the ejection pipes, the Laval nozzles are evenly distributed, different numbers of ejection pipes are selected according to flow requirementsso as to form ejectors with different flow specifications, the area ratio of the ejector is changed by selectively opening the Laval nozzles, an ejection coefficient and a pressurization ratio of theejector are maintained, airflow parameters are adjusted to maintain the ejector to work near a design point, the highest efficiency is achieved, and standardization is easy to achieve.

The invention relates to a cashmere product, in particular to a method to make a white cashmere quilt, solving the problem that cashmere of the prior art is difficult to use and is single in function. The invention includes the following steps: 1 process and treat the original white cashmere; 2 biologically treat the combed white cashmere; 3 process a white cashmere quilt. The white cashmere quilt made with the method of the invention is of good heat preservation performance and high intensity. Tested under the same climatic condition, the warmth retention ratios of a heat-preservation white cashmere quilt not processed the method of the invention and the heat-preservation cashmere quilt made with the method of the invention are respectively 60% and 80%. The cashmere quilt of the invention is even in distribution, novel in structure and good in inside and outside appearance, thus the invention can be widely used in families, high-level hotels, restaurants, military troops and people of all circles.

The invention provides a folding type balancing lifting operation trolley. The folding type balancing lifting operation trolley comprises a base plate, a lifting platform and ladder assembly main upright post units, wherein the lifting platform is arranged at the upper part of the base plate; the ladder assembly main upright post units are arranged at the two sides of the lifting platform; each ladder assembly main upright post unit comprises plurality of layers of sliding rails, locking devices and pulleys, wherein the locking devices and the pulleys are arranged at the two ends of the sliding rails; the pulleys can slide inside the tracks of the sliding rails and are used for driving the next layer of sliding rail to move up or down by virtue of position limitation of the locking devices; the lifting platform comprises a telescopic mechanism, a working platform, a driving unit, a guide rail, a first screw rod and a second screw rod, wherein the working platform is arranged at the upper part of the telescopic mechanism; the guide rail is arranged below the telescopic mechanism; the first screw rod and the second screw rod are arranged on the guide rail; and the working platform isconnected with the outermost layer of sliding rail in the plurality of layers of sliding rails so as to realize upward movement or downward movement of the plurality of layers of sliding rails. The folding type balancing lifting operation trolley provided by the invention is simple in structure, convenient to use and capable of walking freely along the ground, prevents heavy work of manually moving a ladder tool, saves time and efforts, and is safe, flexible, stable in structure and quite convenient to use.

The invention discloses a lithium battery pack with a self-heating system. The lithium battery pack comprises a battery box body, a plurality of battery core bodies arranged in the battery box body, and a battery management system module, a temperature monitoring module and a battery self-heating module which are matched. The temperature monitoring module is configured to monitor the temperaturesof the battery core bodies in real time, the battery self-heating module includes a plurality of PTC heating fins wound on the surfaces of the battery core bodies, the PTC heating fins of each sets ofbattery core bodies are connected through one PCB heating tradition board, the PCB heating tradition boards are electrically connected with the battery core bodies through an anode heating relay anda cathode heating relay, and the battery management system module starts the anode heating relay and the cathode heating relay according to the monitoring signals of the temperature monitoring modulein real time to achieve the self-heating for the battery core bodies after power on. The lithium battery pack with a self-heating system is simple and compact in structure, high in integration degree,uniform in heating and high in safety.

The invention relates to the technical field of environmental survey and monitoring, in particular to a method and system for optimizing the uniform distribution of regional scale monitoring points. In the method, the monitoring points can be moved under the resultant action of the repelling forces exerted by surrounding monitoring points on released monitoring points, thereby finally realizing the uniform arrangement of all the monitoring points; and furthermore, by pre-defining an inside-outside boundary of an effective monitoring region, whether the monitoring points reach the boundary or run out of the boundary can be judged in real time, thereby ensuring the effective uniform distribution of the monitoring points in the irregular monitoring region subjected to inside-limited monitoring. Thus, the invention realizes the uniform distribution of the monitoring points in the irregular region, reduces the complexity in the distribution of the monitoring points and improves the efficiency of the distribution of the monitoring points.

The invention discloses a pole-holding type integrated backup power supply system, which is composed of a box body and a pole-holding clamp. The box has a built-in backup power supply system, and the ear plate is connected to the inner panel of the box, and the ear plate is a groove-shaped member with an opening facing upward. The pole clamp is composed of a hoop, a hook plate, a bracket and a bolt. The middle part of the hook plate is provided with an upwardly bent hook, and the two ends are pre-carded into the preset ear plate opening groove on the inner side plate of the box body 1, and are locked with screws. The bracket and the hoop are both concave bending parts of the sheet metal, the bracket is bent in an isosceles trapezoidal shape, the hoop is bent in a semicircle, and the bolts run through the outstretched sides of both ends of the bracket and the hoop to form an adjustable Locking structure. The invention suspends the box with the built-in backup power supply system on the existing electric poles in the city, which is convenient for supporting small and micro mobile communication base stations, does not occupy the ground, and can avoid touching by idlers. This technical solution has many optional positions and great flexibility, which is beneficial for mobile communication operators to improve the quality of mobile communication.

The invention relates to an intelligent street lamp, an operation method and an intelligent street lamp dimming system. The intelligent street lamp comprises an LED lamp, an illumination sensor, a detector, a processor, a driver and a reflector. The illumination sensor senses illumination to generate an illumination value signal; the detector detects the moving direction and the moving speed of the moving object to generate a detection signal; the processor processes the illumination value signal and the detection signal to generate a first current adjusting signal, calculates a time point when the moving object enters or moves out of the illumination area, and generates a second current adjusting signal and a control signal; the driver generates a first driving signal and a second driving signal, the first driving signal controls on-off and illumination brightness of the LED lamp, and the second driving signal adjusts the illumination brightness of the LED lamp; the reflector reflects light emitted by the LED lamp to the moving object to the front of the moving object. Compared with the prior art, dimming can be carried out according to the moving object, the illumination requirement can be guaranteed, energy consumption can be reduced, and safety can be improved.

The invention discloses a suspension mushroom-growing chamber, which comprises the following parts: steel frame, wall and suspension rack, wherein the steel frame is frame structure, which is composed of wall column (4), support column (7) and beam (5); the wall column lies in the wall; the support column (7) is arranged; the bottom of wall column and support column is connected with foundation (10); the top is integrated with beam (5) to form 'tic-tac' structure; the wall is composed of multi-layer covering material; the wall column (4) and beam (5) are set in the wall; the suspension rack with suspension beam support beam (6) and suspension beam (11) is set on the support column (7); the suspension beam support beam (6) is fixed on the adjacent support columns (7); multiple suspension beams (11) are connected on the suspension rack beam to form crowded hanger beam. The invention possesses moisture and insulating function with high spatial utility, which reduces manufacturing cost.

The invention provides a classroom instant feedback content generation method and a system. The classroom instant feedback content generation method includes the following steps that: a teaching material is inputted into a generator, so that a feedback content package with a feedback point is outputted; a use device invokes the feedback content package to perform classroom feedback, and generate classroom teaching situation data; and a feedback content evaluation device analyzes and summarizes the classroom teaching situation data, and generates teaching situation analysis data. With the classroom instant feedback content generation method of the invention adopted, feedback results can be displayed through a multi-media mode, and the display mode is completely the same as a display mode realized by the operation of multimedia courseware operated by a teacher; main content is displayed at the center of a screen; displayed content is strikingly clear; the content is progressively displayed layer by layer; and the teacher can click on relevant pages according to requirements so as to realize explanation. The present invention also provides a classroom instant feedback content generation method-based system.

The invention discloses a tunnel invert non-blasting excavation method which comprises the following steps of S1, preparing for construction; S2, adopting a rock cutter for cutting a tunnel invert, wherein the longitudinal depth of cutting is smaller than the designed depth of the invert; S3, drilling a cut invert wall by adopting a drilling machine, wherein the drilling depth is the length of a splitting rod; S4, putting the splitting rod in the hole, wherein a splitting direction is an excavated part, 5 to 10 minutes are taken each time, and the splitting rod is connected with a splitting machine through a hydraulic pipe; starting a hydraulic device of the splitting machine, and driving a jack in the splitting rod to eject rock, wherein the ejecting direction is toward one side excavatedwith a free face; and after rock crushing, taking out to put into a next hole, and circularly splitting the rock; S5, shelling to crush larger rock, and using an excavator for loading and transferring stone to a slag yard; S6, after cleaning up the rock, measuring whether the tunnel invert reaches to the designed elevation or not, and for an under-excavation part, shelling to crush or manually air-picking and repairing; and S7, supporting the inverted arch.

The invention discloses an intelligent heterogeneous sensor array of an aircraft sheath, and belongs to the sensor field. The sensor array comprises a secondary array sensor group and a primary arraysensor group, the secondary array sensor group replaces any main sensor unit in an M*N sensor group to form the heterogeneous sensor array, and the secondary array sensor group is composed of secondary sensor units in M' rows and N' columns; the M*N sensor group is composed main sensor units in M rows and N columns; and the primary sensor group is formed by residual sensor units, except the main sensor unit replaced by the secondary array sensor group, of the M*N sensor group. The sensor array layout is optimized, a small number of sensors is used to obtain effective data information almost equivalent to the larger scale of homogeneous sensor array, arrangement of useless measurement points is avoided, function expansion in a larger area is easy to realize, and the sensor array can be integrated into the aircraft sheath.

The embodiment of the invention provides an atlas construction method and device, and the method comprises the steps: determining a target object and at least one reference object having an association relationship with the target object, and determining a relationship type between the at least one reference object and the target object according to the association relationship, and constructing a knowledge graph of the target object based on the target object, the at least one reference object and the relationship type. The knowledge graph comprises an entity node corresponding to the target object, an entity node corresponding to the at least one reference object and a connection relationship among the entity nodes corresponding to the relationship type.

The invention discloses a GIS-based scenic spot service facility layout analysis method. The method comprises the following steps of 1) importing acquired data into a GIS platform, 2) selecting a real-time population big data sampling point and a nearest neighbor service facility through a GIS, and calculating an actual distance between the two, 3) calculating a coupling degree between the real-time population sampling point and the service facility, and 4) graphically expressing the coupling degree so as to output a final scenic spot facility layout analysis result. The method has the advantages of being high in precision, high in operability and the like, the coupling relation between the service facilities and the population distribution in the scenic spot range is accurately reflected,and therefore, a basis is provided for service facility layout.

The invention relates to a partially prestressed and partially non-prestressed concrete hollow pile. The cross section periphery of the partially prestressed and partially non-prestressed concrete hollow pile is a rounded square or a rounded rectangle and the inner circumference is a circle; the length of the outer side and the inner circle diameter are combined according to certain values; the sectional geometric dimensioning in the whole vertical axis direction is identical. Longitudinal main ribs comprise prestress ribs and non-prestress ribs; the number of the prestress ribs and the non-prestress ribs is set according to a certain ratio and the arrangement is designed according to a certain rule; stirrups are fixed outside the main ribs in a roll welding mode or a binding connection mode; the thickness of outer protective layers of the prestress ribs is not less than 40 mm; the thickness of inner protective layers is not less than 35 mm; areas with the length of 1000 to 2000 mm at the pile ends are stirrup dense areas and the interval is from 40 to 70 mm; the stirrup interval is from 60 to 100 mm except the two end dense areas. The partially prestressed and partially non-prestressed concrete hollow pile has the advantages of effectively improving the fragility, increasing ductility, improving earthquake proof, transformation and mechanical performances and being widely applied and popularized to areas having a high requirement for earthquake fortification intensity.

The invention relates to the technical field of medical care, in particular to a magnetization pool of traditional Chinese medicine and its application. The magnetization pool of traditional Chinese medicine is composed of a pool, a water pipe, a main control center, a compression device and wires, and the structure of the magnetization pool is rationally set and adjusted. The layout, especially the position of the permanent magnet in the magnetization pool is set on the pool wall and the center of the pool bottom, so that the magnetic field in the magnetization pool has a reasonable layout, especially a uniform layout, so that the Chinese medicine decoction can be mixed into After the pool, it can be magnetized and divided by the magnetic field, so that it can fully interact with water molecules and evenly disperse in the pool. After people enter the pool, the magnetic field will have an effect on the skin surface of the human body, so that the decoction in the magnetized pool can Quickly react with the human body to achieve the effect of health care.

The invention belongs to the technical field of core-spun yarn production devices, and particularly relates to a large core-spun yarn coiling device which comprises a bearing mechanism, a yarn feeding mechanism and a driving mechanism, the yarn feeding mechanism is installed on one side of the upper surface of the bearing mechanism, and the driving mechanism is installed on the rear portion of the upper surface of one layer of the bearing mechanism; the device further comprises a rolling mechanism capable of rolling at the same time. According to the large coiling device for the covering yarn, through the arrangement of the two layers of rectification space, all components can be evenly arranged, and stable work can be guaranteed in the running process; by means of the arrangement of the carding panel, when the covering yarn is fed, the uniform orientation of short fibers can be kept, and the short fibers are prevented from falling off due to disorder; and finally, under the action of a driving air cylinder, linkage of a connecting rod and a bearing rod can be utilized, so that it is guaranteed that the collecting rollers can move in different directions, and simultaneous coiling is achieved.

The invention discloses a grapefruit needling instrument capable of preventing fruit cracking. The grapefruit needling instrument comprises a handle (1) and a plurality of needles (2), the needles (2) are uniformly and fixedly connected to one end of the handle (1), and the tips of the needles (2) face the outer side of the handle (1). The handle (1) is a hollow round pipe, and the needles (2) are uniformly arranged on the periphery of the handle (1). The needles (2) and the handle (1) are in winding connection through adhesive tapes (3). The lengths that the tips of the needles (2) are exposed out of the handle (1) are consistent. The grapefruit needling instrument is simple in structure, uniform in pricking position, appropriate in depth, efficient and practical.

An electric vehicle charging pile layout optimization algorithm comprises the steps of: setting the minimum loss target minf(x) of traveling of all charging users in a charging region, x being the setnumber of charging piles, when the minf(x) value is the minimum value, obtaining the optimal solution, setting a variable function representing whether a jth driver can complete kth traveling or notas yj(k), performing value assignment on yj(k), assigning yj(k) to be 1 if j drivers cannot finish kth travel, and obtaining a target function if j drivers can finish kth travel: the number of charging piles in one region is limited according to the investment scale and the construction scheme, the feasible region of one charging point P is the total number of charging piles in the charging station xi, the set region area is a constant value, and the layout mode is uniform layout.