92results about How to "Precise speed control" patented technology

The invention discloses an automobile part grinding control system, which relates to the technical field of automobile part grinding control, and ensures that a grinding tool always keeps an optimal focal length and an accurate position in an operation process by accurately controlling a first focusing instruction, a first translation instruction and a first rotation instruction. A strain sensor is introduced to monitor the deformation of the workpiece in real time, and the deformation can be found in time and compensated in real time in the grinding process. The system can optimize temperature control management for different workpiece materials by considering heat conductivity coefficients k and heat conduction factors Rczz of different materials. Multiple factors of stress distribution, heat conduction, cooling efficiency and surface smoothness are considered by integrating the grinding quality index Mzqs, the machining quality grade is generated after comprehensive evaluation is provided for the grinding quality, parameters including the grinding depth, the workpiece feeding speed and the cooling system are adjusted according to the grade result, and therefore the machining quality of the final workpiece is improved.

The utility model discloses a combustible ice exploiting device based on a coiled tubing, which comprises a coiled tubing assembly and a combustible ice exploiting assembly, the combustible ice exploiting assembly is arranged at the lower end of the coiled tubing assembly, and the combustible ice exploiting assembly can move to an underground combustible ice exploiting well section along with the movement of the coiled tubing assembly. A mining monitoring assembly, a hydraulic control pipeline and a power supply control cable are arranged on the outer side wall of the coiled tubing assembly; according to the continuous oil pipe, the function of rapidly and stably exploiting combustible ice is achieved, the exploiting time and the exploiting speed can be remotely and accurately controlled on the ground in the whole exploiting process, and the function of measuring a DAS signal, a DTS signal and a DPS signal on the inner side and the outer side of the continuous oil pipe body in real time in the exploiting process of the combustible ice is achieved; the operation safety of the device in the whole combustible ice exploiting process is guaranteed, the exploiting accuracy and exploiting efficiency of the combustible ice are improved, and the device is simple in structure, high in practicability and suitable for being widely popularized and used.

An integrated servo electric cylinder comprises a servo motor, an electric cylinder, a reduction gearbox and a driver. The integrated servo electric cylinder is compact in structure, core components of a servo system are integrated in a compact mechanism, the number and the size of the components are reduced, and the integrated servo electric cylinder adapts to application scenes with limited space. The integrated servo electric cylinder is high in performance and precision, the precise sensor and the controller are integrated in the integrated servo electric cylinder, more precise position and speed control can be achieved, and the performance and precision of a system are improved. According to the integrated servo electric cylinder, installation and maintenance are simplified, due to the fact that the integrated servo electric cylinder is assembled and debugged in advance, a user can use the integrated servo electric cylinder only through simple installation and wiring, and the installation and maintenance difficulty and cost are reduced.

The utility model is suitable for the technical field of contrast agent preparation, and provides an automatic contrast agent preparation and injection device capable of diluting in a fixed proportion, which comprises a contrast agent storage tank, a normal saline storage tank, a preparation tank and a liquid injection pipe, the contrast agent storage tank and the normal saline storage tank are connected with the preparation tank through a first liquid supply pipeline and a second liquid supply pipeline correspondingly, peristaltic pumps and proportional valves are installed on the first liquid supply pipeline and the second liquid supply pipeline correspondingly, and a stirring mechanism is installed in the contrast agent storage tank; the bottom of the contrast agent storage tank is connected with the liquid injection pipe through a connecting pipe, a pushing and injecting mechanism is installed in the liquid injection pipe, contrast agent dilution in proportion can be achieved, the pushing and injecting speed and the pushing and injecting amount can be accurately controlled, manual intervention is not needed in the process, personal errors and inconsistency are reduced, the image quality and reliability are improved, and the working efficiency is improved. And a stable ultrasonic contrast effect is ensured, and medical professionals can be helped to more accurately diagnose the internal structure and lesion of a patient.

The invention discloses a wheel leg robot tail end quick-change device which comprises a locking motor, a locking transmission mechanism, an upper connecting disc, a lower connecting disc, a quick-change core and a core top block, the upper connecting disc is detachably connected to the core top block in a sleeving mode, the locking transmission mechanism is fixed to the top of the core top block, the quick-change core is embedded in a central shaft hole of the upper connecting disc, and the lower connecting disc is fixed to the top of the core top block. The locking motor is connected with the locking transmission mechanism and fixed to the upper end of the locking transmission mechanism, the lower connecting disc is installed at the upper end of the lower leg supporting piece, a quick-change shaft hole is formed in the middle of the lower connecting disc, and the lower end of the quick-change core penetrates into the quick-change shaft hole to be detachably connected with the quick-change core. According to the wheel-legged robot, the walking legs of the wheel-legged robot can be rapidly replaced, the walking wheels can be rapidly replaced directly through power-off and power-on, wheel type or crawler type or stair climbing type leg walking wheels can be freely selected when the robot walks, the rapid replacement structure further forms a modular structure of the robot, and assembly and maintenance of the robot become simpler.

The utility model relates to an operation threading hook for neuropathic pain. The operation threading hook comprises a handle, a threading needle and a curve hook, the threading needle is arranged on the front section of the handle, the curve hook is assembled at the end, away from the handle, of the threading needle, and threading channels communicated with one another are formed in the handle, the threading needle and the threading hook. According to the surgical threading hook for neuropathic pain, the handle is held, the extrusion ring is rotated by the thumb to drive the pushing roller to rotate, and the rotating shaft located in the pushing roller rotates along with the pushing roller, that is, when the pushing roller rotates clockwise, a suture line can be pushed to move towards a threading needle, and otherwise, the suture line moves towards the tail end of the handle; when the suture pushing device is used, a user can accurately control the pushing direction and speed of the suture by rotating the extrusion ring, accurate operation of the suture is achieved, the structure is easy to operate, pushing of the suture can be controlled only through one finger, and operation convenience and flexibility are improved.

The invention discloses an automatic material nail removing device for a groove type commutator and a using method, and the device comprises a machine table, a main shaft box is arranged on the upper side of the machine table, a feeding sliding table module is installed on the opposite side of the main shaft box, a commutator feeding vibration disc is installed on the front side of the machine table, and a commutator conveying line assembly in butt joint with the commutator feeding vibration disc is installed on the machine table; a feeding manipulator module and a discharging module which synchronously and transversely move are arranged on the feeding sliding table module in a driving mode, an XY-axis bidirectional sliding table assembly is installed on the rear side of the machine table, a cutting tool is installed on the XY-axis bidirectional sliding table assembly, and a material receiving component corresponding to the discharging module is arranged on the side portion of the spindle box. An unloading conveying belt is mounted on the machine table below the receiving part; and the feeding manipulator module is used for putting a groove-shaped commutator on the commutator conveying line assembly into a main shaft chuck on the main shaft box. According to the invention, various technical problems generated by adopting a manual processing mode at present can be solved.

This utility model relates to the field of food processing equipment manufacturing technology, and in particular to a composite motion drive mechanism for a gluten roll winding device, which consists of a torque output unit and a drag force output unit. The winding assembly performs circumferential rotation under the drive of the torque output unit; the unloading cylinder, driven by the drag force output unit, completes axial reciprocating movement, causing the formed gluten to detach. The drag force output unit uses a transmission shaft as its power source, and through the cooperation of a cam mechanism, a multi-component transmission mechanism, a rocking component, and an elastic reset component, converts the power into the reciprocating rocking motion of the rocking component, thereby driving the unloading cylinder to move synchronously. Thus, on the one hand, the composite motion drive mechanism has a relatively simple design structure, and thanks to the operating characteristics of the cam mechanism, the unloading cylinder can achieve non-rigid unloading force application; on the other hand, by adjusting the contour curve of the cam mechanism and the parameters of the multi-component transmission mechanism, and with the assistance of the elastic reset component, the gluten roll winding device can adapt to various unloading requirements.

The application discloses a kind of installation methods of assembled power component radiator, belong to the technical field of power component, comprising: copper layer is sprayed on the inside welding surface of each sub-radiator;Composite solder preform is prepared by solder alloy powder and pore-forming agent particles;After the superposition of radiator, composite solder preform and power module are sent into vacuum soldering furnace and are vacuum soldered;After vacuum soldering is completed, multiple independent power component radiator assemblies are obtained;Multiple independent power component radiator assemblies are spliced to obtain assembled power component radiator.The application forms exhaust passage by pore-forming agent before solder melting, and removes welding interface gas;Directional flow of molten solder is driven by electromigration effect, and bubbles are pushed to interface edge and discharged;Densification is realized by static pressure, and three-level strategy synergies, reduces the porosity, and improves heat dissipation performance and connection reliability.

The invention belongs to the technical field of medical instruments, and particularly relates to an invisible anterior tooth adduction correction device based on implant anchorage, which comprises a main body, two sides of the main body are fixedly connected with a pair of anchorage arms, one end, far away from the main body, of each anchorage arm is fixedly connected with a mounting part, and the edge of the main body is fixedly connected with a pair of fixing rings. The fixing ring is located between the pair of anchorage arms, a sliding groove is formed in the edge of the side, away from the fixing ring, of the body, a pair of sliding blocks are slidably connected to the inner side of the sliding groove, first hooks are fixedly connected to the sides, away from the fixing ring, of the sliding blocks, and a pair of second hooks are arranged on the two sides of the sliding groove. The anterior tooth adduction device has the beneficial effects that by arranging the main body, the anchorage arm, the anchorage nail and the fixing ring, the anterior tooth adduction device can be fixedly mounted in the palate skull of the oral cavity of a patient, and anchorage is provided for anterior tooth adduction of the patient, so that loss of anchorage is avoided, and accurate control on the anterior tooth adduction speed, direction and mode of the patient is realized.

The application relates to the field of medical devices, and particularly discloses a drug releasing capsule device based on an external rotating magnetic field, which comprises a capsule shell, a medicine liquid is stored in the capsule shell, a drug releasing hole is arranged in the lateral wall of the capsule shell, and a spiral strip is arranged on the outer lateral wall of the capsule shell; a medicine pushing rod is slidably arranged in the capsule shell, a stop block is fixedly connected to the medicine pushing rod, the stop block slides along the inner lateral wall of the capsule shell and is used for shielding or opening the drug releasing hole; a first magnet is rotatably arranged in the capsule shell and is driven to rotate by the external rotating magnetic field; a cylindrical cam is coaxially fixed to the first magnet and is used for converting the rotating torque of the first magnet into an axial pushing force to push the medicine pushing rod; a spring is arranged in the capsule shell and is used for applying an elastic force opposite to the axial pushing force to the medicine pushing rod; and a second magnet is fixedly arranged in the capsule shell and is used for keeping the capsule shell fixed under the action of an external static magnetic field. The application adopts a non-contact magnetic driving mode and can realize fixed-point drug releasing and multiple quantitative drug releasing.

The application relates to the technical field of intelligent mobile devices, in particular to a differential horizontal rudder wheel assembly which comprises a walking motor module, a steering motor module, a planetary reducer module and an optimized mechanical connection assembly. The walking motor and the steering motor are both servo motors, high-torque output and accurate control are realized by combining the planetary reducer; the mechanical structure is compact, the installation height is 340 mm, and the integration degree is high; the wheel body is made of polyurethane material, can bear 1500 kg and is suitable for complex working conditions; NPN normally open proximity switches are configured to realize closed-loop control. The application can provide high-precision and high-performance driving, is suitable for automatic devices such as intelligent logistics vehicles and AGV trolleys, meets the demand of complex working conditions and improves the operation reliability.

The invention relates to the technical field of forklifts, and particularly discloses a pure electric stacking type forklift which comprises a forklift body and fork heads, an electric driving unit is installed on the forklift body and comprises a motor and a speed reducer, the speed reducer is installed on the forklift body, and the motor is connected with the speed reducer. The electric driving unit is connected with the lifting unit so as to drive the fork head to ascend, electric driving is adopted to replace a hydraulic system, and the problems existing in the hydraulic system are avoided. The method has the advantages that firstly, no hydraulic system exists, no oil leakage risk exists, and the method is more environment-friendly; secondly, positioning control and speed control are more accurate, response is faster, and influence of environment temperature is avoided; hydraulic impact is avoided, noise is low, and operation is more stable; then, no hydraulic loop loss exists, the energy efficiency is high, and more energy is saved; and finally, hydraulic oil, sealing elements and the like do not need to be replaced regularly, using and maintaining are easy, and manufacturing and maintaining cost is low.

The invention discloses an automatic powder strickling mechanism which comprises a strickling assembly, an automatic powder strickling assembly and a control assembly, and the strickling assembly comprises a pair of flanges which are connected to the free end of a motor and rotate along with a motor shaft of the motor; the blades are distributed between the pair of flanges in an array mode in the circumferential direction of the motor shaft and rotate in the circumferential direction of the motor shaft along with the flanges, and any blade at least has the state of abutting against the scraping plane when rotating along with the flanges; the driving assembly is connected with the slicking assembly and drives the slicking assembly to do reciprocating motion in the extending direction of the slicking plane; any blade is rotatably connected with the pair of flanges. The invention further claims to protect a using method of the automatic powder slicking mechanism. According to the device, the production efficiency can be remarkably improved, the labor cost can be reduced, standardization and consistency of powder slicking can be achieved through an accurate control mechanism, meanwhile, the requirements of an automatic production line are met, and the filter element preparation technology is promoted to advance towards higher-level intelligent manufacturing.

The utility model discloses a bicycle speed regulator and bicycle, bicycle speed regulator includes speed regulator shell, speed regulator worm, speed handle, speed handlebar cover, worm wheel, worm wheel bearing, first adjusting steel wire rope fluted pulley, second adjusting steel wire rope fluted pulley, rear -view mirror support and tap cover, the upper portion in speed regulator shell is transversely installed with speed regulator worm through worm bearing, and the lower portion in speed regulator shell is longitudinally installed with the worm wheel of meshing with speed regulator worm through worm wheel bearing, the left side of speed regulator shell is equipped with extension pipe, is equipped with tap cover on extension pipe, and tap cover is locked on extension pipe through rear -view mirror support. The utility model discloses through worm wheel worm drive and double fluted pulley linkage design realizes accurate speed control, and the whole has the characteristics of compact structure, labour saving, convenient adjustment, speed linear and high reliability, can realize the effect of speed regulation, constant speed, stepless speed regulation, realizes the sliding positioning of traction support before and after to the millimeter level, avoids the phenomenon of riding when jumping the file.

The invention relates to the technical field of polyethylene material preparation, in particular to an ultra-high molecular weight polyethylene stab-resistant and cutting-resistant material preparation system which comprises a wool mixing mechanism, a cotton mixing mechanism, an opening mechanism, a conveying mechanism, an air pressure cotton box mechanism, a belt weigher, a carding mechanism, a roller pre-stab mechanism, a high-speed pre-stab mechanism, a stab-resistant mechanism and a material receiving mechanism which are connected in sequence. The wool mixing mechanism is used for mixing and carding fiber materials to improve uniformity of fibers, the opening mechanism is used for loosening and separating the fiber materials to enable the fiber materials to be in a fluffy and dispersed fiber state, then the fiber materials are conveyed to the air pressure cotton box mechanism through the conveying mechanism, and the air pressure cotton box mechanism is used for storing and conveying the fiber materials. And the output quantity and speed of the fiber material are controlled by adjusting the internal air pressure. According to the technical effects of multiple aspects such as high integration, refined treatment flow and optimized material performance improvement, the efficient, stable and reliable production process is achieved.

The utility model discloses automatic feeding equipment of a laser cutting machine, which belongs to the technical field of automation and comprises a machine table, a group of transplanting module mechanisms and a manipulator mechanism. Module transplanting mechanisms and a manipulator mechanism are arranged on the machine table, and the module transplanting mechanisms are arranged on the two sides of the manipulator mechanism correspondingly. The output end of the manipulator mechanism is provided with the material taking mechanism; a product is placed on the transplanting module mechanism; an organ cover is correspondingly arranged on one side of the transplanting module mechanism; an emergency stop button is arranged on the machine table; and the transplanting module mechanism and the manipulator mechanism are arranged in the machine cover. The transplanting module mechanism and the mechanical arm mechanism are matched for feeding, automatic feeding can be achieved, the manual intervention time is shortened, multi-station feeding is arranged, and the production continuity and efficiency are improved.

The invention relates to the technical field of waste resource utilization, and discloses a coupling type system and method for preparing copper powder through kitchen waste gasification-hydro-thermal synthesis, and a coupling reaction device in the system comprises a supercritical water gasification module and a supercritical hydro-thermal synthesis module which are sequentially arranged in a sleeving mode from outside to inside; a palladium membrane is arranged between the supercritical water gasification module and the supercritical hydrothermal synthesis module; the outer side wall of the supercritical water gasification module is coated with a heating unit; according to the invention, a supercritical water gasification reactor and a supercritical hydrothermal synthesis reactor are integrated together through a sleeve structure; pure hydrogen is separated from gasification products in the supercritical water gasification module through a palladium membrane, an expensive chemical reducing agent is replaced, effective utilization of kitchen waste slurry is effectively improved, and the utilization rate of conversion from waste to resources is achieved. And meanwhile, pure hydrogen is separated by using a palladium membrane and enters a supercritical hydrothermal synthesis module, so that introduction of impurities is avoided, and preparation of high-purity superfine copper powder can be realized.

The invention relates to the technical field of AIDS prevention and treatment blood sampling detection, and discloses AIDS prevention and treatment blood sampling detection equipment which comprises a shell mechanism, the shell mechanism comprises a shell, a display screen, an indicator light and an operation button, the display screen is installed on the front end face of the shell, the indicator light is arranged on the right side of the display screen, and the operation button is arranged on the right side of the display screen. By means of the blood sampling mechanism, the sample transfer mechanism and the control mechanism, when blood is sampled, the microprocessor accurately controls the puncturing depth and the blood sampling speed of the microneedle array according to feedback signals of the pressure sensor, and the blood sampling speed of the microneedle array can be accurately controlled according to the feedback signals of the pressure sensor. According to the device, the safety, stability and high efficiency of the blood sampling process are ensured, during detection, all parts of the device operate efficiently and stably under the coordination control of the control mechanism, automatic and intelligent operation from blood sampling to detection analysis is achieved, and the blood detection efficiency and accuracy in AIDS prevention and treatment work are improved.

This invention relates to the field of wastewater treatment and reuse technology, and discloses a wastewater treatment and reuse device for copper concentrate flotation, comprising: a mounting frame as the overall supporting body of the equipment; and a pretreatment unit integrated on one side of the top of the mounting frame. The pretreatment unit includes a pretreatment tank, an anti-clogging filter assembly, and an intermittent jetting assembly. The pretreatment tank is used to receive copper concentrate flotation wastewater and provide pretreatment space. The anti-clogging filter assembly includes a stepped filter screen detachably connected to the inside of the pretreatment tank. Through the deep synergy between the anti-clogging filter assembly and the intermittent jetting assembly in the pretreatment unit, the long-standing problems of easy filter clogging, single function, and poor operational stability in the pretreatment stage of copper concentrate flotation wastewater are effectively solved. At the same time, this invention can avoid the problem of excessive waste or insufficient addition of reagents due to water quality fluctuations in the traditional fixed-dosing mode, ensuring that the three liquid reagents can be fully mixed with the wastewater in the optimal ratio.

The utility model discloses a water chestnut slicing machine, which relates to the field of food processing, and comprises a rack, a box body is fixedly connected on the rack, two rotating shafts I and two rotating shafts II positioned below the rotating shafts I are rotatably connected in the box body, a first driven chain wheel is fixedly connected on the rotating shafts I, and a second driven chain wheel is fixedly connected on the rotating shafts II. A second driven chain wheel is fixedly connected to the second rotating shaft, and a driving assembly is fixedly connected to the rack. The device has the beneficial effects that through transmission of a motor, a driving chain wheel and a chain in the driving assembly, the first rotating shaft and the second rotating shaft on the same side are driven to rotate in the same direction, and through meshing transmission of a first driven chain wheel and a second driven chain wheel, the rotating direction and speed of a first conveying roller, a second conveying roller and a blade can be accurately controlled. And the annular blades inserted on the two rotating shafts II in a staggered manner can cut the water chestnuts from multiple angles during rotation, so that the water chestnuts are quickly and uniformly cut into a plurality of pieces, and the slicing efficiency and the yield are greatly improved.

The present invention relates to the technical field of hardware-in-the-loop testing of hybrid electric vehicles, in particular to a hybrid vehicle fuel consumption simulation test system with a controller in the loop, which includes a hardware-in-the-loop test system, a vehicle environment simulation system, a real controller, a fuel consumption test simulation system and a host computer, wherein the hardware-in-the-loop test system loaded with the vehicle environment simulation system and the fuel consumption test simulation system is connected to the real controller of the vehicle through a CAN bus and is controlled by the host computer; wherein the hardware-in-the-loop test system serves as a hardware-in-the-loop carrier, the vehicle environment simulation system simulates the vehicle operating environment by setting environmental parameters and vehicle parameters; the real controller serves as a hardware-in-the-loop control object; and the fuel consumption test simulation system simulates and completes the fuel consumption test. The test system of the present invention can simulate a hybrid vehicle to perform a WLTC fuel consumption simulation test, effectively predict and test the operating conditions and real fuel consumption of a hybrid vehicle, shorten the development cycle, and reduce development costs.

The invention provides a plasma jet device and method adaptive to an aircraft, and relates to the technical field of aircraft auxiliary devices. The device comprises a high-pressure gas module, a plasma generation device, an electromagnetic field regulation and control module, a buffer module and a jet pipe module, a gas output end in the high-pressure gas module is communicated with an input end of the plasma generating device; the output end of the plasma generating device is communicated with the input end of the spiral diversion trench; the output end of the electric field generator is communicated with the input end of the gas mixer; the output end of the gas mixer is communicated with the input end of the jet pipe module; the jet flow pipe module sprays out plasma jet flow conveyed by the gas mixer in different directions by arranging a jet flow pipe. The plasma and the inert gas are subjected to multi-stage combination, the plasma jet is regulated and controlled through the mechanical flow guide structure and the electric field and magnetic field regulation and control mechanism, and finally the stability of the plasma is greatly improved.

The utility model provides a kind of carbon-coated aluminium foil surface quality treatment device, comprising: the unwinding device of connection in proper order, hot air knife device, first oven device, first coating device, second oven device, second coating device, third oven device and winding device;Winding device is used to wind aluminium foil roll after aluminium foil roll is sequentially treated by hot air knife device, first coating device, second oven device, second coating device and third oven device;Hot air knife device is used to remove oil film by shearing stripping and pyrolytic oxidation mode to aluminium foil roll;First coating device is used to coat the front of aluminium foil roll passing;Second oven device is used to dry the front of aluminium foil roll;Second coating device is used to coat the back of aluminium foil roll;Third oven device is used to dry the back of aluminium foil roll and is transported to winding device.The utility model's carbon-coated aluminium foil surface quality treatment device can improve the surface quality of aluminium foil.

The utility model relates to the technical field of aluminum alloy die casting, in particular to a heart-shaped clamp taking device which comprises a track rack, a lead screw is installed on the track rack through the output end of a servo motor arranged outside the track rack, and the lead screw is connected with a first air cylinder through a nut arranged on the surface of the lead screw and a bolt. The bottom of the first air cylinder is connected to one end of the connecting frame through a bolt, and the other end of the connecting frame is connected with the clamp support through a bolt. According to the improved part taking device, the transmission of a transmission structure of a gear can accurately control the moving speed and force of a clamping part, so that the force and speed for grabbing an object are more accurately adjusted, and an effective protection effect is achieved on aluminum alloy parts with complex shapes or thin walls; and after the workpieces are grabbed, the first air cylinder can drive the workpieces to ascend, the workpieces are conveyed to the next machining point through the rail rack, and the complexity of manual taking is effectively avoided.

This application relates to the field of biscuit production technology, providing a fully asynchronous synchronous control system and method for a biscuit production line. The system includes a data acquisition module, a data processing module, a central control module, and an execution module. Dynamic adaptive adjustment is achieved through a closed-loop control process. The data acquisition module collects real-time data on the speed of each conveyor belt segment, biscuit density, and posture. The data processing module constructs and iteratively optimizes a speed control prediction model based on historical and real-time data to calculate the optimal speed for each segment. The central control module generates segmented acceleration commands for smooth rotation in the cooling section, gradual speed commands for smooth transitions between processes, and dynamic adjustment commands for coordinating the density across the entire line, based on the model output. The execution module responds to the commands with precise speed adjustment. This application achieves global synchronous matching of speed and biscuit density across multiple asynchronous conveyor belts, significantly improving production yield and efficiency while reducing material and energy waste.

This invention discloses a dosing device and a dosing method. The dosing device includes a drug storage device connected to a dispensing pipe. A drug pump, a first pressure detection device, a flow detection device, and a terminal dosing system are sequentially connected to the dispensing pipe. The terminal dosing system includes a branch pipe connected to the dispensing pipe. A second pressure detection device, a manual ball valve, a first back pressure valve, a dosing mechanism, and a second back pressure valve are sequentially connected to the branch pipe. A terminal dosing port is connected to the end of the branch pipe. The dosing mechanism includes a piston fixing housing, within which a piston is slidably connected. This invention ensures that the entire dispensing pipe is filled with drug by controlling the pressure of the dispensing pipe. It can control the rotation speed of the drive device according to the different dosing flow requirements at each dosing point, achieving accuracy and stability of the drug dosage at each dosing point, and effectively reducing the difficulty of precisely adjusting the different drug dosages at multiple dosing points.

The invention relates to the technical field of medical instruments, in particular to an automatic ultrasonic contrast agent injection device which comprises an injector, a controller, a position monitoring device, a pressure monitoring device and a driving device. A needle cylinder body of the injector is used for storing a contrast agent, a needle cylinder handle can slide, the controller is connected with the sensors and collects, analyzes and processes signals for operation, the position monitoring device monitors the position of the needle cylinder handle and calculates the injection dosage and speed, and the pressure monitoring device monitors the pressure change and the standard reaching condition. A driving motor of the driving device is electrically connected with the controller, drives a screw rod to rotate and is connected with a needle cylinder handle, the controller judges the running state of the driving device according to pressure monitoring data and re-determines the running state, pressure data are repeatedly obtained in the re-determination process, and an abnormity judgment mode is determined according to the first-time monitoring data; therefore, the accuracy and the safety of injection are ensured, and the automation level and the reliability of ultrasonic contrast agent injection are improved.

This utility model discloses a novel geological exploration drilling device, relating to the field of geological exploration technology. It includes a base with self-locking casters on all four sides of its bottom. A fixing plate is fixedly connected to all four sides of the base's bottom, and each fixing plate has a threaded hole through which a fixing screw is threaded. A handle is fixedly connected to the top of each fixing screw, and the bottom of each fixing screw is conical. A first motor drives a reciprocating screw to rotate, which, combined with a limiting rod, restricts the rotation of the connecting plate, allowing the connecting plate to move precisely up and down axially. Simultaneously, a second motor on the connecting plate drives the drill bit to rotate at high speed. This combination achieves precise control of drilling depth and speed, helping to obtain more accurate geological samples, improving the accuracy of geological exploration, and providing a reliable basis for subsequent geological analysis.

This invention discloses a magnesium-lithium alloy cabin structure component and its forming method, belonging to the field of magnesium-lithium alloy forming technology. The method includes the following steps: S1. Pre-treatment of the magnesium-lithium alloy ingot, followed by free forging or extrusion to obtain a billet; S2. Die forging the billet and air-cooling it to room temperature to obtain a forging; S3. Holding the forging at 270~290℃ for 4~6 hours, then quenching it in cold water and performing T5 heat treatment; finally, aging strengthening by holding it at 180~220℃ for 8~12 hours. The forming method of this invention improves product uniformity through pre-treatment and enhances product strength and toughness through heat treatment. This forming method has broad application prospects and is expected to be industrialized.