23results about How to "Reduce drag" patented technology

The embodiment of the present application provides a wellhead natural gas gas-liquid separation device, which relates to the field of natural gas separation technology. A wellhead natural gas gas-liquid separation device comprises: a mounting mechanism, a separation mechanism, the separation mechanism is located in the middle of the upper end of the mounting mechanism, a liquid production regulating mechanism, the liquid production regulating mechanism is located at the upper end of the separation mechanism, a filtering mechanism, the filtering mechanism is located inside the upper end of the mounting mechanism, the filtering mechanism is located at the upper ends of the separation mechanism and the liquid production regulating mechanism, and a driving mechanism, the driving mechanism is located on one side of the upper end of the mounting mechanism, and the driving mechanism drives the separation mechanism to rotate. The positions of the flow control plate, the liquid production plate and the filter screen can be adjusted synchronously, so that the flow process and separation process of the gas-liquid mixture in the separation device are correspondingly optimized, thereby improving the separation quality of mixtures with different gas-liquid ratios.

This utility model discloses a horizontal slide table for an electric vibration test bench, applied in the field of electric vibration test bench technology. The key technical features are: it includes a lower vibration table and an upper vibration table fixedly connected to the lower vibration table; horizontal grooves are formed along the horizontal direction on both the upper and lower vibration tables; a horizontal slide table is slidably connected within the horizontal grooves; a first abutment plate and a second abutment plate are fixedly connected to the bottom of the horizontal slide table on both sides along the sliding direction; a plurality of abutment support shafts for abutting and supporting the first and second abutment plates are evenly and alternately rotatably connected to both sides of the horizontal groove along the sliding direction; and lubrication components for lubricating both ends of the abutment support shafts are provided within the horizontal grooves. The technical advantages are: simple structure and reduced friction.

The invention relates to an intelligent infusion device and an intelligent infusion method. The device comprises a cabin body, an infusion device and an infusion device, the monitoring unit is arranged in the cabin body and is used for acquiring image data of an infusion part of the child in real time; the output unit is arranged in the cabin body and / or the medical care terminal and used for sending out prompt information, and the processing unit is in communication connection with the monitoring unit and the output unit. The processing unit controls the output unit to send out prompt information according to the medicine leakage condition of the infusion part and / or the swelling condition of the infusion part reflected by the image data acquired by the monitoring unit, and further reflects the medicine leakage condition of the infusion part and / or the swelling condition of the infusion part according to the preliminarily acquired image data; and the control output unit prompts the accompanying person to approach the transfusion part of the child to the information of the monitoring unit. According to the infusion reminding device, pertinent reminding can be carried out on the seepage swelling phenomenon in the infusion process of children, and the invalid workload of medical staff is reduced.

This invention provides a variable-parameter drag-reducing device for a cylindrical body with a perforated cover, comprising a cylinder and a perforated cover. The perforated cover is fitted over the outer layer of the cylinder, and the perforated cover and the cylinder are aligned along the same centerline. The perforated cover completely encloses the cylinder. The perforated cover includes an outer cover and an inner cover. The outer cover can rotate relative to the inner cover around the centerline. Both the outer and inner covers have multiple through holes. When the outer cover rotates relative to the inner cover around the centerline, the overall porosity of the perforated cover can be adjusted. The length of the separation zone at the rear of the device is significantly increased, and the vortex shedding suppression effect is significant, resulting in increased pressure on the leeward side of the cylinder and reduced drag. Simultaneously, a significant vibration reduction effect is achieved. This invention further explores the influence of parameters such as the size of the perforated cover and changes in porosity on the overall drag-reduction effect, providing guidance for the design of perforated covers.

The application provides a cable positioning and locking device for building electromechanical installation and cable transmission, and belongs to the technical field of building electromechanical installation. The technical scheme is that the device comprises a mounting plate, a control device is arranged on the front side of the outer surface of the mounting plate, and a clamping structure is arranged at one end of the control device. The application has the beneficial effects that the clamping structure and the control device cooperate to smoothly separate two cleaning rings, thereby facilitating the placement of the cable. By closing the two cleaning rings, good supporting effect can be achieved when the cable is being dragged. The cleaning ring and the guide overheating alarm structure can reduce the abrasion of the cable and avoid damage caused by cable breakage. The device cooperates with the clamping structure and the control device to facilitate the placement of the cable and achieve the locking effect of the cable, thereby ensuring the stability of the cable installation.

The utility model relates to the technical field of air deflectors, in particular to a light-weight automobile air deflector, which is characterized in that a plurality of groups of upper air deflectors are arranged and connected in a support of a rotating shaft base, and the upper end of a bracket of each group of bottom support vertical frame is provided with a buffer bracket for supporting the upper air deflector; side flow guide covers attached to the upper flow guide cover on the outermost side are symmetrically arranged on the two sides of the rotating shaft base. When the flow guide cover is installed and used, the upper flow guide cover and the rotating shaft base are combined in a rotating mode, under the elastic jacking of the buffering support and the elastic deformation flow guide of the side flow guide cover, when the combination of the upper flow guide cover and the side flow guide cover suffers from large wind resistance, under the effect of wind power, the upper flow guide cover and the side flow guide cover can be dynamically pressed downwards to swing. According to the air guide sleeve, the transverse stress area of the air guide sleeve is reduced, air resistance is reduced, meanwhile, the good dynamic flow guide effect is achieved, real-time dynamic flow guide can be conducted according to the air resistance, and the optimal flow guide effect of the air guide sleeve is guaranteed.

The application relates to the field of 3D printing, in particular to a clutching and feeding mechanism for continuous fiber composite 3D printing. The feeding pipe is fixed on a shell through a joint, the tail end of the feeding pipe is connected with a feeding path formed by a feeding groove of a pressing feeding wheel and a feeding groove of a driving feeding wheel, the lower end of the feeding groove is connected with a discharging path at the lower end of the shell, and the shell is fixed on a motor connecting plate; the pressing feeding wheel is driven by the driving feeding wheel through gear meshing, the driving feeding wheel is fixed on a driving feeding shaft, the driving feeding shaft is driven to rotate by a transmission wheel fixed thereon, the transmission wheel is in transmission connection with a driving wheel through gears, the driving wheel is fixed on a stepping motor, and the stepping motor is fixed on the motor connecting plate; the two ends of the driving feeding shaft are sleeved in bearing inner rings, and bearing outer rings are sleeved with the motor connecting plate and the shell respectively; the swing angle of a rudder arm of a rudder can be controlled through the rudder, different feeding modes can be switched, and the fiber tension can be controlled.

The invention discloses an agricultural unmanned aerial vehicle path planning method based on a rasterized map and related equipment. The method comprises the following steps: acquiring boundary information of a farmland area to be operated, and performing digital rasterization processing on the farmland area to generate a raster map; performing area division on the farmland area based on the grid map to form a main operation area and turning-around areas located at the two ends of the main operation area; and receiving a starting point and a starting advancing direction specified by a user, generating a bow-shaped reciprocating main operation path covering the main operation area in the main operation area by taking the starting point and the starting advancing direction as path generation constraints, and generating a bow-shaped reciprocating operation path covering the space range of the U-turn area in the space range of the U-turn area. The problems that an existing full-coverage path planning algorithm mainly pursues that a path does not repeatedly sweep the whole area, but the general design cannot meet the special working condition of an agricultural unmanned aerial vehicle in the ploughing operation can be solved.

The utility model provides a separated type packaging box dragging and transporting structure, and relates to the technical field of transfer equipment. A supporting assembly is arranged at the position, close to the front end, of the forklift assembly, a lifting assembly of a vertical structure is installed at the position, close to the front end, of the supporting assembly, a power motor is directly installed at the position, close to the front end, of the forklift assembly, the whole device can conduct power-assisted operation, and the supporting assembly is arranged at the position, close to the front end, of the forklift assembly; the protection assembly is installed at the rotating assembly at the upper end of the supporting assembly, after being unfolded, the protection assembly has the auxiliary shielding effect on the box frame, the protection assembly is also installed on the lifting assembly at the supporting assembly, and the stabilization effect on the box frame during transportation is improved through the double-layer protection assembly; the unwanted safety problems that when an existing forklift is used for transferring a packaging box, the packaging box is prone to inclining in the turning process, the packaging box topples over, and goods are damaged are solved.

The application discloses a kind of production devices applied to bottle cap two-dimensional code, it is related to bottle cap ink-jet equipment technical field, including transport component, including support piece, the surface of support piece is fixed with ink-jet piece, transport piece, is installed in the inner wall of support piece.The application is designed by the synergy of transport component and auxiliary assembly, the defects that the production device for two-dimensional code applied to bottle cap is low in the precision of ink-jet positioning, production operation efficiency is insufficient and process integration level is not high are solved;Abandon artificial observation and the positioning of single image recognition structure is in place and the operation mode of ink-jet, by vacuum transport mode is realized automatic cleaning and in place ink-jet while synchronously conveying, avoid the problem of ink-jet misplacement, miss ink-jet, ink-jet caused by judgment deviation, guarantee the printing quality of bottle cap two-dimensional code and the success rate of code recognition, while eliminating the secondary pollution caused by in-place operation to bottle cap surface, improve the adhesion firmness of ink-jet ink and product appearance qualified rate.

There is provided a vehicle aerodynamic device including: an airflow adjusting unit provided so as to be able to appear or disappear at a rear portion of a vehicle, and configured to adjust an airflow flowing along a roof of the vehicle in a direction opposite to a forward traveling direction of the vehicle; the lamp unit is arranged on the airflow adjusting unit; and a driving unit configured to generate a driving force in such a manner that the airflow adjusting unit operates. According to the utility model, the first airflow adjusting unit is arranged in a manner that the first airflow adjusting unit can appear and disappear at the rear part of the vehicle, so that the airflow which flows from the forward driving direction of the vehicle to the direction opposite to the forward driving direction of the vehicle along the roof of the vehicle can be guided when the vehicle runs, and the airflow is not distributed to the roof side of the vehicle.

The application discloses a photovoltaic module and relates to the technical field of photovoltaic modules. The photovoltaic module comprises a cover plate, a glue film, a cell array, a lower glue film and a back plate. The cell array comprises at least one parallel group arranged along a first direction, each parallel group comprises at least two cell strings in parallel, each cell string comprises a plurality of cell pieces arranged along a second direction and connected in series, the back surface of the corresponding cell pieces in the first direction in each parallel group is provided with a plurality of sub bus bars, the plurality of sub bus bars are connected with the conductive wires of the same conductive type of the cell pieces, one conductive wire is connected with one sub bus bar, adjacent conductive wires are connected with different sub bus bars, and the width of the sub bus bar is less than or equal to 5 mm. The embodiment can effectively reduce the pulling force of the sub bus bar on the conductive wire when the sub bus bar is cold contracted, and reduce the probability of problems such as virtual welding, welding separation, cell piece warping and the like between the conductive wire and the grid line of the cell piece.

The utility model relates to the technical field of drainage tube fixing, and discloses a novel abdominal cavity drainage tube fixing device which comprises a skin-friendly adhesive tape, an elastic fixing seat is fixedly arranged on the upper end face of the skin-friendly adhesive tape, a rotating groove is formed in the lower end face of the elastic fixing seat, and a rotating assembly is arranged in the rotating groove. The rotating assembly comprises a rotating plate, a rotating shaft and a mounting plate. According to the drainage tube, the rotating plate, the rotating shaft and the mounting plate are arranged, so that the drainage tube body can be matched with twisting of a patient to rotate when the patient moves such as rotating the body, and the dragging effect on the drainage tube body can be effectively reduced; through arrangement of a T-shaped block, sliding plates and a limiting block, when a nurse pulls a pulling plate upwards, the sliding plates on the two sides of the pulling plate are pushed inwards, then the pulling plate is loosened, the pulling plate can be clamped on the limiting block through a limiting groove, a convex block is located in a mounting groove at the moment, and therefore the nurse can conveniently penetrate a drainage tube body into a through groove.

This utility model discloses an electric greenhouse film winding device, including a first winding support assembly and a second winding support assembly. The second winding support assembly includes a lower fixed mounting base, a U-shaped column fixed on the lower fixed mounting base with its opening facing away from the supporting arch frame, a strip groove opened in the U-shaped column in the longitudinal direction, a rack fixed in the U-shaped column in the longitudinal direction, a support shaft passing through the strip groove, a gear sleeved on the support shaft and meshing with the rack, a motor mounting plate slidably disposed on the side of the U-shaped column, a winding reduction motor fixed on the motor mounting plate and connected to the support shaft, a second traveling support roller and a third traveling support roller disposed on the inner side of the motor mounting plate, a first rolling bearing respectively sleeved on the second traveling support roller and the third traveling support roller, and a traveling wheel disposed on the first rolling bearing. The traveling wheel is placed inside the U-shaped column and rolls in the longitudinal direction.

This invention discloses a multi-hub motor Euler-Lagrange torque dynamic vector distribution system and its control method. The system treats the four hub motors of a distributed drive electric vehicle as a multi-hub motor electromechanical system. The torque distribution system of the multi-hub motor electromechanical system includes an integrated Euler-Lagrange torque controller and a driving assistance system. The method includes: pre-processing modeling of the four hub motors; pre-setting the Euler-Lagrange torque distribution control law; sampling the state variables of the multi-hub motor electromechanical system; determining the desired equilibrium point of the multi-hub motor electromechanical system; calculating the injection of dynamic interconnection coefficients and injection of friction damping coefficients; outputting the optimal given torque by the Euler-Lagrange torque distribution controller; and coordinating the modulation controller and the multi-half-bridge arm group driver to drive each hub motor. This invention can effectively adapt to various complex road conditions and improve the handling stability of distributed drive electric vehicles.

The utility model belongs to the technical field of stirrers, and particularly relates to a carbon steel surface spraying stainless steel stirrer which comprises a main shaft, an upper fixing piece, a lower fixing piece and a smashing piece are installed on the lower side of the main shaft, the upper fixing piece comprises a first optical axis fixing seat, the first optical axis fixing seat is connected with a sleeve, and a pawl is arranged in an installation groove formed in the side face of the sleeve. A paddle stirrer is rotatably mounted on the outer side of the sleeve and comprises a sleeve, a ratchet groove is formed in the inner wall of the sleeve and meshed with a pawl in a one-way mode, stirring blades are mounted on the outer side of the sleeve, the smashing part comprises a second optical axis fixing base, and smashing teeth are formed on the side face of the second optical axis fixing base. When the main shaft rotates forwards, the paddle stirrer is driven by the ratchet mechanism to rotate and stir materials; when the materials are caked and agglomerated at the final stage of concentration, the main shaft rotates reversely and does not generate power transmission with the paddle type stirrer, the paddle type stirrer and the agglomerated materials are prevented from expanding, deforming or breaking, meanwhile, the agglomerated materials are gradually crushed in the rotating process of the crushing part, and the stirring production efficiency is improved.

The invention relates to the technical field of air cylinders, in particular to an air cylinder with a buffer structure, which comprises a cylinder body, a buffer structure and a buffer structure, the end cover assembly comprises a front end cover and a rear end cover which are arranged at the two ends of the cylinder body, a first air inlet / outlet is formed in the front end cover, and a second air inlet / outlet is formed in the rear end cover; the guide rod assembly is arranged in the cylinder body, a first airflow channel communicated with the first air inlet / outlet and a second airflow channel communicated with the second air inlet / outlet are formed in the guide rod assembly, and air in the cylinder body flows to the first air inlet / outlet through the first airflow channel or flows to the second air inlet / outlet through the second airflow channel; the piston assembly comprises a piston rod and a first piston arranged on the piston rod, one end of the piston rod penetrates through the front end cover, and the other end of the piston rod is connected with the first piston.

The application discloses a double-cone DNA chain-shaped magnetic micro-robot structure and a driving method. The micro-robot comprises a chain-shaped main body extending along a central axis, the chain-shaped main body is composed of two spiral main chains and a transverse connection sequence, the transverse connection sequence connects the two spiral main chains into a DNA chain-shaped structure, and an envelope circumscribing the micro-robot main body structure is double-cone-shaped. A magnetic functional layer and a biocompatible layer are sputtered on the outer surface of the micro-robot in sequence. The magnetic functional layer is magnetized to form a fixed magnetization direction with a preset misalignment angle with the central axis, so that the micro-robot can realize spiral propulsion under the action of an externally applied uniform rotating magnetic field. The propulsion direction can be switched by changing the rotating axis angle of the rotating magnetic field, so that the tail part can be used as the head part for propulsion in the return process, and the whole turning operation is avoided. The structure takes into account the drag reduction and attitude stability, and is suitable for micro-fluidic control and biomedical scenes.

This invention relates to the field of temperature-controlled clothing technology, solving the problem in existing technologies where the lack of an effective linkage control mechanism between thermoelectric elements and cooling fans affects the overall cooling effect. It provides a protective suit with temperature regulation function and its temperature control method. The protective suit includes: a garment body comprising an inner layer facing the body and an outer layer away from the body; a semiconductor refrigeration component disposed on the garment body; a power module electrically connected to and supplying power to the semiconductor refrigeration component; a cooling fan disposed on the outer layer of the garment body and electrically connected to the power module; and a control module for controlling the start / stop and power adjustment of the semiconductor refrigeration component and the cooling fan to achieve an adjustable cooling effect on the body.

The utility model belongs to the technical field of medical instruments, and discloses an adenoid curette which comprises a handle and an annular cutter head fixedly arranged on the handle, and further comprises a cutter assembly, and the cutter assembly comprises a push rod and a cutting blade fixedly arranged on the push rod; a first cavity is formed in the handle, the push rod is arranged in the first cavity in a sliding mode, a groove is formed in the annular tool bit and matched with the slice in position, and an adjusting device used for enabling the push rod to drive the slice to stretch out of or be embedded in the groove is arranged on the handle. When the adenoid body is cut, the area of an incision can be reduced, the operation is convenient and fast, the safety is high, and the adenoid body cutting knife is suitable for cutting hypertrophy adenoid bodies.

The utility model relates to the technical field of pet supplies, in particular to a pet chest and back strap convenient to fix, which comprises a chest and back strap body and a connecting component, the chest and back strap body comprises a necklace and at least one wearing ring, the necklace is used for being worn by the neck of a pet, and the wearing ring is used for being worn by the limbs of the pet. The connecting assembly comprises a plurality of connecting rings and connecting fasteners, the number of the connecting fasteners corresponds to that of the connecting rings, two of the connecting rings are fixedly arranged on the necklace and located on the left side and the right side of the neck of the pet, and the other connecting rings are fixedly arranged on the wearing ring; each connecting fastener comprises a clasp and a connecting piece, and the clasp is detachably buckled with the connecting ring; one end of the connecting piece is fixedly connected with the clasp, and the other end of the connecting piece is a free end. According to the pet chest strap convenient to fix, after a user wears the pet, displacement of the periphery of the pet can be limited to a certain degree conveniently and rapidly.

The present invention discloses an automatic retraction mechanism of a brake block, a brake device and a car, wherein the automatic retraction mechanism of the brake block comprises a brake block and a bracket, and a retraction component for generating a retraction force to make the brake block return to a direction away from a brake disc is provided between the two ends of the brake block and the bracket, and the retraction component is a retraction torsion spring, and the retraction torsion spring comprises a spring body, a first spring arm and a second spring arm; the spring body is located on the outside of the brake block, one end of the first spring arm is connected to the spring body as a whole, and the other end is provided with a clamping joint formed by bending, and is connected to the torsion spring connecting part of the brake block through the clamping joint; one end of the second spring arm is connected to the spring body as a whole, and the other end is provided with a spring tongue formed by bending, and is supported on the spring tongue contact surface of the bracket through the spring tongue. The retraction mechanism has good retraction force in different use stages, and can significantly improve the stability and reliability of the retraction mechanism.