12results about How to "Uniform distance" patented technology

The invention provides a multi-unmanned aerial vehicle three-dimensional inspection method and system based on an improved simulated annealing algorithm, and the method comprises the steps: dispatching an unmanned aerial vehicle to collect point cloud data of a region needing inspection, processing the obtained point cloud data, and obtaining the three-dimensional coordinate data of an unmanned aerial vehicle inspection point; according to the intensive degree of the inspection data points and the number of the inspection unmanned aerial vehicles, adopting a K-means + + algorithm to allocate inspection tasks of the unmanned aerial vehicles; and after the routing inspection tasks of the unmanned aerial vehicles are distributed, according to the task routing inspection point three-dimensional coordinates of the unmanned aerial vehicles, an improved simulated annealing algorithm is adopted to optimize routing inspection tracks of all the unmanned aerial vehicles. According to the invention, after the point cloud data is acquired through the unmanned aerial vehicles to obtain the three-dimensional coordinates of the target point needing to be inspected, the inspection task area of each unmanned aerial vehicle is optimized through the clustering method, and then the inspection three-dimensional track of each unmanned aerial vehicle is optimized by adopting the improved simulated annealing algorithm, so that the total inspection time is minimized.

The invention discloses a concentrated solution freezing crystallization machine for salifying preparation of erythromycin oxime, and relates to the technical field of salifying preparation of erythromycin oxime, the concentrated solution freezing crystallization machine comprises a rack, a supporting plate is fixedly connected to the position, close to the edge, of the bottom of the rack, and a guide sliding groove is formed in the lower position of the surface of the supporting plate; and the top of the rack is fixedly connected with a hoist. According to the concentrated solution freezing crystallizer for salifying preparation of erythromycin oxime, a cavity is formed in the position between the temperature adjusting assembly and the temperature slowing assembly, heating water is introduced into the cavity, erythromycin oxime salt is evaporated and concentrated through water bath heating, then hot water is discharged to enable the temperature of a concentrated solution to reach a metastable area, and the interior of the temperature slowing assembly is slowly cooled; the erythromycin oxime crystals are separated out, the electric rotary table drives the magnetic sliding block to rotate, the temperature slowing assembly scrapes off the adhered crystals, and the problems that the heat transfer performance is deteriorated and the yield of the erythromycin oxime is low due to the fact that crystal scales are very easy to crystallize between a cooled solution and a heat transfer surface are solved.

The invention discloses an irradiation test device, and particularly relates to the technical field of fireproof coating testing, the irradiation test device comprises a test box, irradiation equipment and a sample mounting seat, the test box is provided with a box door, the irradiation equipment is mounted in the test box, the sample mounting seat is rotatably mounted on the box door, and the sample mounting seat is provided with a plurality of groups of sample mounting grooves; a sample leveling assembly is further arranged in the test box and comprises a positioning compression roller and a leveling supporting frame, the positioning compression roller is installed on the leveling supporting frame, the leveling supporting frame is installed in the test box, and the positioning compression roller is vertically arranged. The sample mounting seat is controlled to rotate, so that the positioning compression roller is gradually contacted with each sample, and the outer walls of the samples extruded and fixed by the positioning compression roller are positioned in the same plane, so that the distances from the outer surfaces of coating layers to irradiation equipment are relatively uniform, the test error is reduced, the test precision is improved, and the test efficiency is improved. And more accurate test data can be obtained.

The utility model discloses a pedal support, a pedal device and a vehicle, and the pedal support is characterized by comprising a mounting seat suitable for being connected with a vehicle body; the pedal connecting rod is suitable for being connected with a pedal; the two ends of the connecting arm are hinged to the mounting base and the pedal connecting rod respectively; and the dustproof part is connected with at least one of the mounting seat and the pedal connecting rod and covers at least part of the outer side surface of the connecting arm so as to prevent foreign matters from entering a gap between the connecting arm and the mounting seat and / or the pedal connecting rod. According to the pedal support disclosed by the embodiment of the utility model, foreign matters such as silt and broken stones can be isolated through the dustproof part, so that jamming and faults caused by the foreign matters are reduced.

This invention provides a liquid-cooled heat dissipation assembly, including a power unit and a liquid-cooled plate for dissipating heat from the power unit. Each converter unit has a circuit structure forming a midpoint-clamped three-level topology. The switching transistors and diodes of each converter unit are combined to form several converter groups spaced apart along the X-axis and extending along the Y-axis. The cooling liquid channel of the liquid-cooled plate has branch channels connected in parallel to each converter group. This invention can reduce the stray inductance of the power unit and improve its heat dissipation efficiency.

The utility model discloses an automatic castable batching device, and belongs to the technical field of castable production equipment. The automatic castable batching device comprises a bottom plate, an electronic weighing table is installed at the top end of the bottom plate, a material collecting barrel is installed at the top end of the electronic weighing table, a plurality of material storage barrels are arranged on the outer side of the material collecting barrel, a discharging pipe is installed at the bottom end of each material storage barrel, a conveying pipe is installed at the bottom end of each discharging pipe, and a pair of supporting seats is installed at the bottom end of each conveying pipe. A transverse plate is installed at the bottom end of the supporting seat, a pair of supporting frames are installed at the bottom end of the transverse plate, the bottom ends of the supporting frames are fixedly connected with the top end of the bottom plate, a conveying shaft is rotationally connected to the inner side of the conveying pipe, the outer side of the conveying shaft is sleeved with a spiral blade, one end of the conveying pipe extends to the top end of the storage barrel, and an anti-blocking mechanism is arranged in the storage barrel. The auxiliary discharging device can effectively achieve the auxiliary discharging function, prevents materials from being accumulated and blocked in the hopper, and has high practical value.

This utility model discloses a diaphragm pump head structure, including a pump head body, a fluid chamber support, and a piston frame driven by a drive device. The piston frame is movably disposed within the fluid chamber support and has multiple piston heads. The fluid chamber support has piston holes corresponding to the piston heads, and the piston heads are movably disposed within the piston holes. The piston frame has a rotational tendency under the action of the drive device, with the direction of rotation set as the reference direction. A movable gap is provided between the inner wall of the piston hole and the piston head, and the movable gap gradually increases along the reference direction. The movable gap corrects the offset of the piston head during actual operation, thereby ensuring that the distance between the piston head and the inner wall of the piston hole is relatively uniform during actual operation. This, in turn, ensures that the diaphragm sinks uniformly during suction and discharge, reduces wear, and extends service life.

An adjustable silicon wafer support platform for large-size silicon wafer edge polishing includes a support table, a center support rod is vertically fixed on the support table, a center support plate is fixedly connected to the top of the center support rod, a moving ring is slidably sleeved on the middle part of the center support rod, a plurality of side support rods are also slidably arranged on the support table, the side support rods are obliquely arranged relative to the support table, and the plurality of side support rods are uniformly distributed around the circumferential direction of the center support rod, the top of the side support rod is fixedly connected with an edge support plate, and the center support plate and all the edge support plates jointly form a support platform for supporting the silicon wafer, and the moving ring can push the side support rod to slide during up-down movement to change the distance between the edge support plate and the center support plate. The actual size of the silicon wafer for edge polishing can be flexibly adjusted according to the need, so that the silicon wafer can be uniformly supported, and the silicon wafer can be prevented from falling due to unstable support when the edge is stressed or being damaged due to uneven stress on the edge.

The present invention relates to an impeller housing (5) for a pump, the impeller housing (5) having an inlet wall, wherein the impeller housing (5) has an inlet radius measured from an axially extending central axis (A) to a circular intersection (11) between the inlet wall and the upper surface (12) of the impeller housing (5), the impeller housing (5) including a guide pin (13) connected to and extending radially inward from the inlet wall, the guide pin (13) having an end radius measured from the axially extending central axis (A) to the radially innermost portion of the guide pin (13), wherein an imaginary 15% circle (23) is radially offset from the circular intersection (11) by fifteen percent of the difference between the inlet radius (R) and the end radius (r), the impeller housing (5) including a feed groove (14) arranged in the upper surface (12) of the impeller housing (5) and extending from the inlet wall (10) to the periphery of the impeller housing (5). The impeller seat (5) is characterized in that, viewed from the direction of rotation of the pump (1), the upstream edge line (34) of the slot inlet is the radius at which the impeller seat (5) intersects with the upstream edge (35) of the feed slot (14) at the circular intersection (11), wherein the upstream edge angle (λ) of the slot inlet between the radius at which the impeller seat (5) intersects with the upstream edge of the guide pin (13) at the 15% circle (23) viewed from the direction of rotation of the pump (1) and the upstream edge line (34) of the slot inlet is equal to or less than 20 degrees and equal to or greater than 0 degrees. The invention also relates to pumps comprising such an impeller seat.

The utility model provides a kind of descaling device, it is related to industrial equipment technical field.The descaling device, including bearing main body, manifold device, installation main body, positioning structure and lifting drive device.There is installation through-hole on bearing main body.Manifold device has multiple spray heads for descaling.Manifold device is located at one end of installation main body, and the other end of installation main body is movably loaded into installation through-hole.Positioning structure is connected to bearing main body, and positioning structure is equipped with positioning passage, and positioning passage corresponds with installation through-hole.Lifting drive device is connected with positioning structure, and lifting drive device passes through positioning passage and is drivingly connected with installation main body.The descaling device provided by the utility model can improve the technical problem that the descaling effect of different specifications of rolled pieces is different in the prior art.

The application discloses a kind of link obstacle avoidance topologies of cross-level multi-senior node based on G6, comprising: creating at least one container, for storing topological graph;In the container, an object representing the graph of satellite station and its relationship is created, the attribute of the object is set, the edge shape of the object is called obstacle avoidance algorithm module, and obstacle avoidance is carried out;The edge shape is set, the default edge shape is added to the object representing the graph of satellite station and its relationship, and the graph is generated;The graph is rendered, and interactive function is added.The application optimizes the readability of layout, makes the distance between nodes more uniform, the relationship layout between cross-levels more reasonable, and reduces the complexity of algorithm.

The utility model provides a spraying device for wafer coating. The spraying device comprises a spraying plate, a spraying device and a spraying device, the positioning structure comprises a support top seat arranged on one side of the spraying plate, and a support bottom seat arranged on the other side of the spraying plate; the clamping assembly is arranged on the bottom side of the support top seat in a sliding mode, the clamping assembly comprises a plurality of clamping rods and gap calipers, the clamping rods are arranged on one side of the support top seat in a sliding mode, and the gap calipers are arranged on the clamping rods; the lifting assembly is arranged on the support top seat; the traction piece is connected between the clamping rod and the lifting assembly; the elastic piece is connected between the clamping rod and the lifting assembly; and a gap is formed between the gap caliper and the side wall of the clamping rod. According to the spraying device for wafer coating and the wafer coating equipment disclosed by the utility model, the uniformity of the thickness of a film formed on the surface of the wafer can be improved.