68results about How to "Increase smoothness" patented technology

The utility model discloses a guide wire fracture test tool, and belongs to the technical field of guide wire testing. The device comprises a base, one side of which is rotatably provided with a handle; the rotating shaft is rotationally installed on the base, the rotating shaft is in transmission connection with the handle, the rotating shaft comprises a plurality of winding shafts which are different in diameter and are coaxially arranged, and through holes are formed in the winding shafts. The rotating shaft directly comprises a plurality of winding shafts with different diameters, so that when different guide wires are replaced or fracture tests with different bending degrees are carried out on the same guide wire, the guide wires are directly wound on the winding shafts with different diameters, and the rotating shaft or a tool does not need to be replaced; therefore, fracture tests of different bending degrees can be carried out on the guide wire very conveniently, and the efficiency of the fracture tests of the guide wire is improved.

The invention belongs to the field of wafer processing, and particularly relates to a wafer processing rotary adsorption platform which comprises a fixed base. The end part of the fixed base is fixedly connected with a mounting seat; a driving part is fixedly connected to the inner wall of the middle part of the mounting seat; the output end of the driving part is fixedly connected with a workbench; a vacuum pump is mounted in the workbench; the output end of the vacuum pump is fixedly connected with a plurality of connecting pipes; an adsorption table is slidably connected to the inner wall of the workbench, a plurality of adsorption holes are formed in the adsorption table, and the multiple adsorption holes communicate with the multiple connecting pipes; the extrusion plate extrudes gas in the gas cylinder after the rotary adsorption platform is powered off, the gas is blown out by the spray head to drive the workbench to continue to rotate, and when the shifting piece continues to rotate along with the workbench to approach the sliding block, the second magnetic block and the first magnetic block attract each other through magnetic force to assist in driving the powered-off workbench to return to the zero position. The situation that the rotary adsorption platform loses the zero position due to power failure is reduced, and the grinding machining efficiency of the wafer after being powered on is guaranteed.

The present application relates to a method, system, device and medium for color uniformity correction of an LED display screen, the method comprising obtaining the LED module saturation and LED module wavelength of each splicing module of the LED display screen, constructing a module splicing scheme of the LED display screen, obtaining the module splicing position and the spacing between adjacent modules in the module splicing scheme, respectively calculating the edge splicing pixel difference of each splicing module according to the module splicing position and the spacing between adjacent modules, and calculating the center pixel mean of adjacent splicing modules, performing homogenization processing on the gap pixels between adjacent splicing modules according to the center pixel mean and the corresponding edge splicing pixel difference, obtaining the LED module duty cycle of each splicing module, and adjusting the LED module duty cycle of adjacent modules at the same frequency according to the homogenization processing result, and obtaining color uniformity correction data of the LED display screen. The present application has the effect of improving the adjustment adaptability of the color uniformity of the LED display screen.

The knitting machine table comprises a knitting machine main body mechanism, and the knitting machine main body mechanism comprises a base, a supporting stand column, a middle large disc, a middle ejector rod, a top large disc, a top support, a silk feeding disc support, a rotating cylinder, a needle hanging groove, a self-positioning settling base, a hook-shaped closing needle and a cloth discharging rotating frame. The multiple sets of supporting stand columns are evenly and fixedly arranged on the base, the middle large disc is fixedly arranged on the supporting stand columns, the multiple sets of middle ejector rods are evenly and fixedly arranged on the middle large disc, the top large disc is fixedly arranged on the middle ejector rods, and the top large disc is fixedly arranged on the top large disc. According to the invention, the problem that a fabric has edge marks due to the fact that the roundness of a knitting needle is out of tolerance can be effectively reduced, and the problem that the maintenance difficulty is large due to rapid positioning and resetting in the disassembly and maintenance process is improved; the phenomenon of frequent shutdown time caused by yarn winding or breakage is reduced, and the production efficiency is improved.

The invention provides an aircraft equal-straight-part skin assembly and an aircraft equal-straight-part framework, the aircraft equal-straight-part skin assembly comprises a plurality of wall plates which are annularly and sequentially spliced, the inner surfaces of the wall plates are flush, and the inner surfaces of all the wall plates form a smooth cylindrical surface; the outer surface of each wall plate comprises a plurality of equal-thickness areas and transition areas which are alternately arranged in the heading direction, the thickness of any equal-thickness area is not smaller than the corresponding minimum load thickness, the surface of any transition area is an annular face arranged in the annular direction, and the boundaries of the two sides of any transition area make contact with the adjacent equal-thickness areas correspondingly. The thicknesses of the boundaries on the two sides of the transition areas are equal to the thicknesses of the equal-thickness areas in contact with the transition areas, and any transition area has a preset gradient in the course; therefore, under the condition that the aerodynamic performance of the aircraft is guaranteed, the configuration of the stringer and the annular frame tightly attached to the inner surface of the aircraft skin is simplified, and the manufacturing cost of the aircraft is reduced.

The utility model relates to the technical field of hot pressboards, and discloses an efficient hot pressboard for a hot press, which comprises a board body and a mounting block, a heating pipe is embedded and connected in the board body, the heating pipe is S-shaped, one end of the heating pipe extends out of the board body and is provided with a power connection head, the lower surface of the mounting block is provided with a clamping groove, and the clamping groove is fixedly connected with the mounting block. An insertion block is fixedly connected to the surface of the plate body, and a clamping mechanism matched with the clamping groove is arranged in the insertion block; the clamping blocks are clamped into the clamping grooves, so that installation of the plate body is completed, installation and disassembly are easy and convenient, use is convenient, the plate body is guided through the guide sleeve, and the sliding stability of the plate body is guaranteed.

The present invention provides a polylactic acid fiber spinneret with a double concave-convex special-shaped cross section, and relates to the technical field of polylactic acid fiber spinning. The polylactic acid fiber spinneret with a double concave-convex special-shaped cross section comprises an upper plate, a lower plate, a seat ring, a liquid guide cavity, a liquid guide groove, and a liquid guide hole. The present invention provides multiple groups of inserts with spinnerets, so that multiple groups of spinnerets are used in combination, which effectively solves the problem of processing difficulties after increasing the length of the spinnerets, and the detachable connection simplifies the work of cleaning the spinnerets. A sink is provided on the lower wall of the lower plate, and the weight of the spinneret is greatly reduced by hollowing out. Multiple groups of spinnerets are arranged in increasing order from top to bottom, and a nano alloy ion layer is provided on the inner wall of the spinneret to increase the smoothness, which can release part of the elastic potential energy of the polylactic acid melt to a certain extent, reduce the expansion ratio of the primary silk, and maintain the stability of spinning. The nano alloy ion layer also plays an anti-corrosion role.

The application relates to a kind of knitting loom, including knitting machine main mechanism, the knitting machine main mechanism includes base, support column, intermediate large dish, middle top rod, top large dish, top support, wire feeding disc support, rotary cylinder, needle hooking groove, self-positioning sinker, hook type closed needle, lower cloth rotary frame;The support column is provided with multiple groups, is evenly fixed on the base, the intermediate large dish is fixed on the support column, the middle top rod is provided with multiple groups, is evenly fixed on the intermediate large dish, the top large dish is fixed on the middle top rod, the top support is fixed on the top large dish, the application can effectively reduce the problem that fabric appears edge mark due to the running roundness of knitting needle is out of tolerance, improve the problem that the difficulty of repair is caused by quick positioning reset in the process of disassembly and maintenance;Reduce the phenomenon that frequent downtime is caused by yarn winding or breakage, improve production efficiency.

The invention discloses a flow cell structure for measuring abrasive particles of lubricating oil, which relates to the technical field of lubricating oil and comprises a measuring main body, two pipelines, a measuring instrument and a light-emitting instrument, a cavity is formed in the measuring main body; circulation openings are formed in the two sides of the measuring main body; the pipelines are communicated with the cavity through the corresponding circulation openings, and the inner walls of the pipelines are flush with the opening walls of the circulation openings; a first mounting opening and a second mounting opening are respectively formed in two sides of the measuring main body along the height direction of the measuring main body; the measuring instrument seals the first mounting port and is partially located in the cavity; the light-emitting instrument seals the second installation opening, and the surface of the part, located in the second installation opening, of the light-emitting instrument is flush with the inner wall of the cavity. Dead corners in the structure can be effectively eliminated, the smoothness degree of abrasive particles flowing along with lubricating oil is improved, the accuracy of a measurement result is guaranteed, and meanwhile the influence of the abrasive particles on the structure can be relieved.

The present application relates to the technical field of intelligent control, and more particularly to a laser multi-axis flight machining path planning method based on adaptive weighted filtering, which comprises inputting a three-dimensional curved surface model and a target two-dimensional path, setting constraint thresholds of defocusing amount, laser incidence angle and galvanometer scanning range, setting a lower bound of a filtering factor, generating a midpoint filtering factor and a weight matrix of an initialized filtering factor, performing weighted filtering on the target two-dimensional path through an adaptive weighted filtering target function to obtain a smoothed two-dimensional path, projecting the smoothed two-dimensional path onto the three-dimensional curved surface to obtain a platform machining path, calculating constraint parameters and constraint margins, generating segment filtering factor weights and updating the weight matrix, repeating the steps until iteration is completed, judging whether the platform machining path meets the constraints, updating a search interval, repeating the steps to output a final platform machining path, and calculating a galvanometer machining path. The method improves the path smoothing degree, thereby improving the average feeding speed of the motion platform and the machining efficiency.

The invention belongs to the technical field of building equipment, and particularly relates to a unit type curtain wall plate horizontal transporting device and a construction method thereof.The unit type curtain wall plate horizontal transporting device comprises a rail, a winch, a steel wire rope and a plate transporting vehicle, the rail is arranged on a horizontal structure in a building, and the winch is connected with the plate transporting vehicle through the steel wire rope; the unit type curtain wall plate conveying device has the beneficial effects that the horizontal conveying device can conduct horizontal conveying in a construction site, the unit type curtain wall plates are safely and rapidly conveyed to a designated installation position from a storage area, and the construction efficiency and accuracy are improved.

The invention provides a hole processing method and a hole processing device for a printed circuit board, and relates to the technical field of printed circuit boards. The invention aims to solve the technical problem that more burrs are generated when hole processing is carried out on the printed circuit board in the prior art. According to the technical scheme, the hole machining method for the printed circuit board comprises the following steps that a base plate is fixed to the table top of a workbench; laying a printed circuit board to be processed on the upper surface of the base plate; laying a pressing plate on the upper surface of the printed circuit board; preliminarily fixing the pressing plate and the printed circuit board on the upper surface of the base plate through a paper adhesive tape; and enabling the cutter to penetrate through the pressing plate, and carrying out hole processing on the printed circuit board. The hole processing method comprises the following steps: firstly, laying a backing plate below the printed circuit board, and laying a pressing plate above the printed circuit board; and then hole processing is carried out on the printed circuit board, so that burrs generated in the hole processing process of the printed circuit board can be reduced. In addition, the invention also provides a hole processing device of the printed circuit board, which is matched with the hole processing method.

The utility model discloses an efficient flotation defoaming nozzle which comprises a body provided with a through channel, the body is provided with an inlet and an outlet, and the channel section area of the outlet is larger than that of the inlet; the penetrating channel comprises a first section and a second section, the first section is cylindrical, and the second section is in a circular truncated cone shape. The outlet cross section of the nozzle is designed to be larger than the inlet cross section, compared with an existing nozzle, an opposite design mode is adopted, the flow speed of outlet ore pulp is reduced, the pressure of the outlet ore pulp is increased, and the purpose of avoiding turbulent flow is achieved in a pressurizing and speed reducing mode on the premise that pressure supply is not changed. The flotation tank can scrape foam step by step, and the flotation efficiency is improved.

The invention discloses a crawler walking system of an electric wheelchair, which is characterized by comprising two pairs of crawler devices which are bilaterally symmetrical and are arranged front and back, each crawler device comprises a crawler wheel and a crawler wound on the crawler wheel, and the crawler is wound in an inverted triangle shape and is provided with a horizontal lower bottom edge; the front side edge is positioned at the front end of the lower bottom edge and obliquely extends forwards and upwards; and the upper side edge is connected between the front side edge and the lower bottom edge to form an inverted triangle. The invention further discloses a double-track electric wheelchair adopting the track walking system. The wheelchair has the advantages that the wheelchair can be better and conveniently controlled to go up and down the steps, and the flat ground walking smoothness of the wheelchair can be improved.

The invention relates to the technical field of steel structure welding seams, in particular to a steel structure welding seam detection device which comprises a base, a conveying frame is fixedly connected to the top of the base, a conveying assembly is installed in the conveying frame, and a rotary detection assembly for driving a steel structure with an irregular shape to rotate and detecting a welding seam is installed on the conveying frame; the rotating detection assembly comprises an outer frame fixedly connected with the top of the conveying frame, a detection probe is installed on one side of the outer frame, a driving assembly which adjusts the supporting height after being stressed and drives the steel structure to rotate is installed at the bottom of the inner side of the conveying frame, and a polishing assembly fixed to the conveying frame is arranged below the driving assembly. An arc-shaped plate is installed at the bottom of the inner side of the outer frame, the driving assembly comprises an air cylinder installed on the conveying frame, and the output end of the air cylinder is fixedly connected with a lifting frame. The problem that weld joints of steel structures with different shapes are difficult to detect due to the fact that existing steel structure weld joint detection equipment is difficult to drive the steel structures with corners to rotate is solved.

The invention discloses a shielding material for a thermoplastic polyvinyl direct-current power cable as well as a preparation method and application of the shielding material, and relates to the technical field of composite materials. The invention relates to a shielding material for a thermoplastic polyvinyl direct-current power cable. The shielding material comprises the following components in parts by weight: 70-74 parts of polyethylene resin; 22 to 28 parts of filler; 2-6 parts of an auxiliary agent; the filler comprises first conductive carbon black and second conductive carbon black, the particle size of the first conductive carbon black is not less than 30nm, and the particle size of the second conductive carbon black is not more than 15nm. The shielding material is adaptive to an existing thermoplastic polyethylene insulating material, the electric field distortion degree of an insulating / shielding interface is effectively reduced, charge injection into an insulating layer is inhibited, the electric field distortion degree in the insulating layer is effectively reduced, and therefore the electrical characteristics of the insulating material are improved.

The utility model discloses a kind of automatic lubricating mechanisms for glue pressing equipment, including bottom plate, lower mould mechanism, the upper surface of the middle part of bottom plate is fixedly installed with main support, the upper surface of main support is fixedly installed with hydraulic cylinder, the bottom end of hydraulic cylinder is fixedly installed with glue pressing plate, the lower surface of glue pressing plate is fixedly installed with upper mould, the upper surface of the middle part of the length direction both sides of bottom plate is all installed with fixed mechanism, the both sides of main support bottom end are provided with lubricating mechanism, the inner surface of the bottom of two groups lower mould mechanism is screw thread connected with threaded rod, the side end of threaded rod is provided with displacement motor, the output end of displacement motor is fixedly sleeved with the middle part of threaded rod, and outer surface is fixedly installed with the inner surface of bottom plate;The utility model is through setting displacement motor, threaded rod, lubricating mechanism and other structures, after completing glue pressing processing, the movement of lower mould can be adjusted, lubricating mechanism can also be used to lubricate the surface of moving lower mould, improve the smooth degree of subsequent stripping.

The utility model discloses an electric tool which comprises an air cylinder, a piston, a punch hammer, an impact rod, an oil storage tank, a first transmission mechanism and a second transmission mechanism. A first containing cavity is formed in the air cylinder in the axial direction, the piston is installed in the first containing cavity in a sliding mode, a second containing cavity is formed in the piston in the axial direction, and the two ends of the second containing cavity are the open end and the closed end respectively. The punch hammer is slidably installed in the second containing cavity, a gap is formed between the punch hammer and the closed end of the second containing cavity, the impact rod is slidably installed in the first containing cavity and located on the side, away from the closed end of the second containing cavity, of the punch hammer, and the oil storage groove is formed in the circumferential outer surface of the piston and / or the punch hammer. The first transmission mechanism is used for driving the piston to reciprocate in the first containing cavity. The second transmission mechanism is used for driving the cylinder to rotate. The oil storage grooves are formed in the circumferential outer surfaces of the piston and the punch hammer, friction between the piston and the inner wall of the air cylinder and friction between the punch hammer and the inner wall of the piston are reduced, and the service life of the electric tool is prolonged.

The utility model relates to a screening device for anti-crack mortar production, which comprises a base, a tank body and a screen frame, the screen frame is arranged in the tank body, the top of the base is fixedly connected with a stand column, the top of the stand column is fixedly connected with a top plate, the top of the base is fixedly connected with a mounting table, the top of the mounting table is provided with a first motor, and the output end of the first motor is provided with a first rotating shaft; a bearing is fixedly connected to the inner side of the stand column, a first discharging opening is formed in the bottom of the tank body, a second discharging opening is formed in the top of the tank body, a feeding opening is formed in the top of the tank body, a second motor is installed at the top of the tank body, and a second rotating shaft is arranged at the output end of the second motor; materials are screened in a rotating mode, the strength is improved, the screens are prevented from being pulled and torn, waste residues are effectively separated and prevented from impacting the inner wall of the tank body, and the service life of the protection and prolonging device is prolonged.

The invention provides a deduction-based three-dimensional complex fault model construction method and related equipment, and the method comprises the steps: determining fault data of a target region, carrying out the extraction and analysis of the fault data, and determining attribute data, plane fault discrete points and profile elevation data; determining a first fault fall and a discrete point fall change type, and determining a hanging wall discrete point coordinate and a footwall discrete point coordinate according to the first fault fall and the discrete point fall change type; determining a stratigraphic interval, and determining a second fault fall change range and a second fault fall according to the stratigraphic interval and the first fault fall; performing priority ranking on the fault, determining a priority sequence, performing intersection deduction according to the priority sequence, and determining a first stratum model; performing intersection deduction on the fault and the special geological structure to determine a second stratum model; discrete points of each fault in the stratum model are encrypted to determine a discrete point set, Delaunay triangular mesh generation is carried out on the discrete points, and a fault plane model is generated.

The invention discloses an internal winding type coiling machine double-layer transition wire winding device which comprises a wire feeding mechanism and a clamping mechanism, the wire feeding mechanism comprises an L-shaped supporting seat, a linear air cylinder is arranged on the L-shaped supporting seat, a connecting block is fixedly arranged on a sliding block of the linear air cylinder, a connecting seat is fixedly arranged at the bottom of the L-shaped supporting seat, and the clamping mechanism is arranged on the connecting seat. A supporting frame is fixedly arranged at the bottom of the connecting base, the bottom of the supporting frame is rotationally connected with the middle of the wire nozzle mechanism, the connecting block is rotationally connected with one end of the connecting rod, a through hole is formed in the connecting base, the other end of the connecting rod penetrates through the through hole to be rotationally connected with one end of the wire nozzle mechanism, and the clamping mechanism is used for storing workpieces. The double-layer transition wire winding device of the internal winding type wire winding machine is simple in structure and convenient to use, winding of an upper transition wire and a lower transition wire is achieved under multi-angle rotation of the wire nozzle through matched arrangement of the wire feeding mechanism and the clamping mechanism, and the working efficiency is greatly improved.

The invention provides a device and a method for reducing frictional resistance during pull-back of a directional drilling pipeline, and relates to the technical field of directional drilling. Comprising a reamer, a reaming assembly is arranged on the surface of the reamer, the reaming assembly is used for enlarging the diameter of a drilled hole in the pipeline back-dragging process so that a pipeline can pass through the drilled hole, one end of the reamer is in threaded connection with an auxiliary assembly, and the auxiliary assembly is used for scraping and consolidating the inner wall of the drilled hole with the enlarged diameter. And the other end of the reamer is in threaded connection with a lubricating assembly, and the lubricating assembly is used for releasing a lubricating agent in the lubricating assembly into a drill hole in the back dragging process of the pipeline. By arranging the reaming assembly, the auxiliary assembly and the lubricating assembly, when the pipeline is recycled, the friction force between the pipeline and the hole channel wall can be reduced, and the pipeline back-dragging smoothness and the construction efficiency are improved.

The non-injury vein blocking clamp comprises a fixed clamp body part, a first clamping part is arranged at the front end of the fixed clamp body part, the first clamping part is connected with the fixed clamp body part through a connecting part, a clamping opening is formed in the opposite direction of the connecting part, a sliding groove is formed in the fixed clamp body part, and the sliding groove is communicated with the first clamping part. A sliding groove is formed in the upper portion of the first clamping part, limiting teeth are arranged on the two sides of the upper portion of the sliding groove, an adjusting assembly is arranged in the sliding groove in a sliding mode, a movable clamping body part is connected to the front end of the adjusting assembly, a second clamping part is arranged at the front end of the movable clamping body part, and the second clamping part is matched with the first clamping part to be used for blocking veins; according to the vein blocking device, the extending length of the movable clamping body part is adjusted through the adjusting assembly, so that the clamping distance between the first clamping part and the second clamping part is adjusted, clamping force is fixed, medical staff can directly sense the clamping degree in the adjusting process, the vein blocking effect is better, and use is more convenient.

The invention relates to siRNA of a targeted skin aging promoting gene and application of the siRNA, and belongs to the technical field of biology. The invention provides siRNA (small interfering Ribonucleic Acid) of a targeted skin aging promoting gene. A nucleotide sequence of a positive-sense strand of the siRNA is shown as any one of SEQ ID NO. 1 to SEQ ID NO. 4. The siRNA can target a skin aging promoting gene, is high in interference efficiency, and has high inhibitory activity on the skin aging promoting gene; moreover, the research shows that the exosome loaded with the siRNA has the capability of resisting skin aging (including improving wrinkles and improving the smooth degree of the skin). Therefore, the siRNA has great application prospects in preparation of products for resisting skin aging, diseases caused by skin aging promoting genes and the like.

The utility model discloses a device for preventing bottom layer yarn from being clamped in during POY full roll switching, which comprises a supporting bottom plate and inner extrusion components, the middle part of the top end of the supporting bottom plate is connected with an inserting and fixing component, the inner extrusion components are arranged on the left side and the right side of a movable frame, the upper end and the lower end of a rotating rod are connected with extrusion springs, and the inner extrusion components are arranged on the left side and the right side of the movable frame. And an extrusion positioning assembly is arranged on the inner side of the rotating rod. Compared with an existing bottom layer yarn clamping prevention device, the bottom layer yarn clamping prevention device used during POY full-roll switching has the advantages that the inner extrusion assembly, the extrusion positioning assembly and the gluing assembly are arranged for supporting, gluing and smoothing, the surface smoothness of a paper tube during POY full-roll switching is improved, and the situation that bottom layer yarn clamping is prevented, and the use efficiency is affected is avoided; the positions of the inserting fixing assembly at the bottom end and the movable frame are adjusted according to the size of a paper tube, the applicability of the equipment is improved, the air drying efficiency of colloid can be improved in the using process through the air drying assemblies arranged on the left side and the right side of the bottom end, and then the using efficiency of the equipment is improved.

The utility model provides a vehicle-mounted unmanned aerial vehicle folding and unfolding frame. The vehicle-mounted unmanned aerial vehicle folding and unfolding frame comprises a mounting base, a bearing base and two limiting assemblies. A mounting groove is formed in the top face of the mounting base, the bearing base is arranged in the mounting groove in a sliding mode, and two positioning grooves are formed in the top face of the bearing base. The two limiting assemblies are movably arranged on the two sides of the bearing base correspondingly. Each limiting assembly comprises a connecting base, a limiting plate and two connecting rods. A guide column is arranged on the bottom face of the connecting base, and a guide groove is formed in the bottom face of the mounting groove. The limiting plate is arranged on the top face of the bearing seat, and an avoiding notch is formed in the limiting plate. The two connecting rods are located on the two sides of the guide column respectively, two containing holes are formed in the bearing base, the first ends of the connecting rods are arranged in the containing holes in a sliding mode, and the second ends of the connecting rods are hinged to the connecting base. According to the vehicle-mounted unmanned aerial vehicle folding and unfolding frame, the loading and unloading convenience of an unmanned aerial vehicle can be improved, and the fixing effect of the unmanned aerial vehicle can be improved.

The transmission assembly comprises a cross beam, the transmission assembly is installed in the middle area of the inner side of the cross beam, a transmission shaft penetrates through the transmission assembly, the transmission assembly is located in the middle of the transmission shaft, and the transmission assembly is started to drive the whole transmission shaft to rotate. On the premise that original control over turnover of the shutter is guaranteed, the transmission assembly originally arranged at one end is arranged in the middle of the shutter, the distance from the transmission assembly to the two ends of the shutter is greatly shortened compared with the traditional transmission distance, and the turnover smoothness and the turnover reliability can be obviously improved; and meanwhile, universal quadrangular and hexagonal shaft sleeves are arranged, so that the universality is improved.

The present invention belongs to the field of soil fertilization, and specifically is an agricultural multi-terrain fertilization equipment, including a cart, a driving component, a sowing component, a stockpile bin and a splashing plate. With the development of production and planting industry, the planting area is gradually merged from independent individuals into a whole. The mechanized operation method can greatly improve the sowing and fertilization efficiency of crops, and save human resources at the same time. However, in the process of plant sowing, the spreading range and sowing depth of the fertilizer affect the germination of seeds and the normal growth of plants. Crop fertilizers are often granular. If they are directly exposed to the air after spreading, the volatilization degree of the fertilizer increases, which is not conducive to soil absorption and affects the normal nutritional needs of the subsequent growth of seeds. If the fertilizer spreading range is too large, the plants will not get sufficient nutritional supply. If the fertilizer spreading range is too concentrated, root burn will occur.

The utility model discloses a gate valve. The gate valve comprises a valve body, a partition plate and a valve plate, the partition plate and the valve plate are fixed in the valve body, a main valve and an auxiliary valve are defined by the valve body and the partition plate, a discharging port is formed in the main valve, the valve plate can be installed on the valve body in a penetrating mode to open and close the discharging port, the gate valve further comprises a limiting structure, a plurality of idler wheels and a driving mechanism, and the valve plate is movably arranged in the limiting structure; part of the rollers are installed on the main valve, the other part of the rollers are installed on the auxiliary valve, and the rollers are used for supporting the valve plate. And the driving mechanism is connected with the valve plate and used for driving the valve plate to move on the roller, so that the smoothness of the valve plate moving relative to the valve plate is improved, and the stability and reliability of the gate valve are improved.

The utility model relates to the technical field of chip manufacturing, and discloses a ball mounting device and ball mounting equipment. The ball mounting device comprises an upper tool, a lower tool and an adjusting component, an accommodating cavity is formed in one side of the upper tool; a steel sheet is mounted in the accommodating cavity, and a mounting hole is formed in the side wall of the accommodating cavity; the lower tool is provided with a boss detachably connected with the accommodating cavity, and the boss is used for mounting a chip to be subjected to ball mounting; the adjusting part is arranged in the mounting hole, and the first end of the adjusting part is used for being in rolling fit with the side face of the boss. According to the utility model, through the design of the adjusting part, sliding friction between the side wall of the boss and the side wall of the accommodating cavity can be converted into rolling friction between the boss and the adjusting part, so that the resistance of nesting and separation of the upper tool and the lower tool is reduced, and the smoothness of nesting and separation of the upper tool and the lower tool of the ball mounting device is improved; the problem that in the prior art, an upper tool and a lower tool of a ball mounting device are not smoothly disengaged and nested is solved.