298results about How to "Precise speed control" patented technology

The invention relates to the technical field of robots, and discloses a leg structure and a humanoid robot. A motor template; the hip joint assembly is mounted on the thigh bracket and comprises a rotary mounting frame which is in assembly connection with the motor template; the first end of the hip linear actuator is rotationally connected with the thigh support, and the second end of the hip linear actuator is connected with the hip joint assembly; the shank support is connected with the lower portion of the thigh support through a knee joint assembly; the knee joint linear actuator is arranged on the thigh support, and the driving end is connected with the knee joint assembly; the foot support is connected with the lower portion of the shank support through an ankle joint assembly; the first end of the ankle linear actuator is rotationally connected with the shank support, and the second end of the ankle linear actuator is rotationally connected with the foot support. According to the humanoid robot, the corresponding linear actuators are arranged on the thigh support and the shank support, the space on the thigh support and the space on the shank support are fully utilized, the inertia of the leg structure is reduced, the response speed is high when the leg structure conducts corresponding actions, and the dynamic stability of the humanoid robot is improved.

The invention discloses a glass cold bending test electric loading device and a test method.The device comprises a base, a fixing support, a pressure loading test piece, a lifting component, a loading integrated piece and a control unit, the fixing support is adjustably installed on the base, the pressure loading test piece is arranged at the top end of the fixing support, and the lifting component is arranged on the loading integrated piece; the pressure loading test piece is used for providing extrusion stress for a glass cold bending test and outputting stress data, the lifting component is installed on the fixed support, the loading integrated piece is arranged below the pressure loading test piece and installed on the lifting component through a connecting part, and the loading integrated piece is used for providing various glass cold bending loading modes. And the pressure loading test piece and the lifting component are electrically connected with the control unit. The pressure loading test piece connected with the control unit is introduced, and the lifting component and the loading integrated piece are matched, so that the loading synchronism, precision and test safety are improved, the data acquisition accuracy is ensured, the test efficiency is improved, and the device is suitable for cold bending test loading of various different forms.

The invention discloses an in-situ test method based on shield butt joint curtain grouting, which realizes complete circle crossing of grout injected from each pipeline by designing the arrangement circle number and length of curtain grouting pipelines, and ensures that the surrounding rock grouting reinforcement range meets the design requirement by adopting the minimum number of curtain grouting pipelines, so that a surrounding rock water system channel is fully filled, and the construction period is shortened. A stable water-free environment is provided for subsequent excavation, and the problems that in the prior art, a theoretical calculation basis is lacked, the shield butt joint section surrounding rock reinforcing range is affected, the slurry crossing quality problem is caused by too large pipeline spacing arrangement, and the reinforcing and water stopping effect of butt joint section surrounding rock is remarkably affected are effectively solved. Meanwhile, a sensor is preset in a drilling hole within the grouting range, formation pressure response caused by grout pressure and formation temperature change caused by grout hydration heat in the grouting process are monitored in real time, and data support is provided for selection of grouting parameters in a formation grouting reinforcement project.

The invention relates to the technical field of road construction, and particularly discloses a cooperative construction management method for a highway pavement intelligent spreading and pressing machine group, and the method comprises the steps: S1, collecting road data through an unmanned aerial vehicle, automatically building a construction model through one-key operation according to the data, and determining a spreading route, by combining the road paving information data, the environment data and the paving material temperature, the overall compaction operation environment of the road roller can be analyzed and fed back to different areas in different lines; then, the data processing module can adjust the moving speed of the road roller according to the compaction operation environment in different areas in different lines, so that the speed of the road roller is more adaptive to the compaction operation environment in the current area, the speed of the road roller is accurately controlled, and the situation that the compaction effect is poor due to too high or too low speed is avoided; and therefore, the compaction effect and the working efficiency are improved.

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 invention provides a motor and application, and the motor comprises a first housing which is provided with a main control circuit board; the second shell is positioned in the first shell and is provided with a driving circuit board and a motor body; wherein the driving circuit board is electrically connected with the main control circuit board and the motor body, the main control circuit board is used for outputting a control signal to the driving circuit board, and the driving circuit board is used for outputting a driving signal to the motor body based on the received control signal; wherein the driving circuit board is located at the end of the motor body, the driving circuit board is provided with two opposite surfaces, one surface is provided with a driving circuit, the other surface is provided with a sensing element, and the driving circuit is electrically connected with a main control circuit of the main control circuit board and the motor body. The sensing element is used for detecting the position of the motor body and outputting a detection signal to the driving circuit. The stability and reliability of the motor are improved.

The invention belongs to the technical field of gold stamping, and particularly relates to a digital gold stamping mechanism and a working method thereof. A stepping motor controls and drives a traction mechanism and a winding drum to control gold foil to move, the stepping motor drives the traction mechanism to accurately control the speed of the gold foil, then a trolley controlled by a servo motor is matched to move along a cross beam, and through precise matching of a program, the speed of the gold foil is accurately controlled. The gold foil rolling speed is consistent with the moving speed of the trolley, so that the gold stamping work is completed; wherein the gilding moving speed, the trolley moving speed and the gilding gold foil winding drum receiving speed are consistent, gilding gold foil may extend due to heating due to gilding heating, a receiving servo motor increases a compensation coefficient, and the compensation coefficient is automatically added according to the starting heating amount so as to ensure that the gilding effect of the gilding head position is consistent with the actual height; the defects in the prior art are overcome, and a brand-new gold stamping technology is achieved from the technological means and the working method, so that the production efficiency is greatly improved, and the production cost is greatly reduced.

The invention discloses a preparation method of a large-size titanium alloy cast ingot containing a copper element, which comprises the following steps: step 1, preparing raw materials: according to the components of a target titanium alloy cast ingot, the raw materials comprise a titanium part, sponge titanium and a copper part, the content of titanium is 90.4-91.8%, and the content of copper is 7.8-9%; 2, electrode blocks are pressed, specifically, the titanium sponge prepared in the step 1 is loaded into a mold and pressed on an oil press, and a plurality of electrode blocks are obtained; 3, material distribution is conducted, specifically, the titanium workpiece, the copper workpiece and the electrode block obtained in the step 2 are distributed on an electron beam cold bed furnace according to a set mode; and 4, electron beam cold bed furnace smelting is conducted, specifically, the titanium workpiece, the copper workpiece and the electrode block which are subjected to material distribution in the step 3 are fed into the electron beam cold bed furnace and smelted according to set smelting parameters, cooling is conducted after smelting is completed, and the target titanium alloy cast ingot is obtained. The cast ingot is uniform in component.

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.

The invention provides an intensive care nursing feeding device, and relates to the technical field of medical instruments, the intensive care nursing feeding device comprises a base, a lifting part movably arranged on the top of the base, a storage part arranged on the top of the base, and a flow control part arranged on one side of the lifting part and connected with the storage part; the lifting part is movably connected with the flow control part through an angle adjusting part, and a conveying pipeline used for conveying food is arranged on one side of the flow control part; the flow control part is used for accurately controlling the food flow; through the arrangement of the flow control component and the pressurizing component, the feeding speed and the food flow are accurately controlled, complications are reduced, and the comfort level of a patient is improved; through the arrangement of the lifting part, the angle adjusting part and the rotating table, a patient can be fed at any angle, the workload of nursing personnel can be relieved, and the nursing personnel can efficiently conduct feeding work.

The invention discloses a hydraulic oil cylinder action speed control device and method and engineering machinery, a hydraulic oil way where a hydraulic oil cylinder is located comprises a proportional electromagnetic valve and an oil tank, one side of the proportional electromagnetic valve is communicated with the oil tank, the other side of the proportional electromagnetic valve is communicated with the hydraulic oil cylinder, and the control device comprises a temperature detection part, a flow detection part and a control unit; the temperature detection piece is used for detecting the temperature of hydraulic oil and sending a temperature signal; the flow detection piece is installed on a hydraulic oil way and used for detecting the hydraulic oil flow of the hydraulic oil cylinder and sending a flow signal. And the control unit is electrically connected with the flow detection piece, the temperature detection piece and the proportional electromagnetic valve, and the control unit is used for adjusting the opening degree of the proportional electromagnetic valve according to the temperature of the hydraulic oil and the change value of the flow. The influence rule of the hydraulic oil temperature and flow on the oil cylinder speed is fully considered, the precision and stability of hydraulic oil cylinder action speed control are remarkably improved, and therefore the working performance and reliability of a whole hydraulic system are improved.

The invention relates to an automatic running control system and method for a trolley, belongs to the technical field of automatic control, is used for controlling the trolley to run automatically on a set track, and comprises a sensor module, a main control module, a speed control module and a direction control module. The sensor module is used for identifying a set track and acquiring the speed and the driving direction of the trolley in real time; the main control module is used for generating a first driving control instruction and a second driving control instruction when the speed and the driving direction of the trolley are not the target speed and the target direction; the speed control module is used for responding to the first driving control instruction and adjusting the speed of the trolley to the target speed; and the direction control module is used for calibrating the gyroscope, after a Kalman filter is adopted to predict calibrated data in real time, a second driving control instruction is responded, the driving direction of the trolley is adjusted to the target direction based on a direction ring-motor ring cascade PID, and the control precision and stability are improved.

The invention discloses an autonomous vehicle queue cooperative control method and device, the distance and speed between vehicles are ensured to be accurately controlled through a longitudinal control strategy, the safe distance can be maintained, the change of traffic flow can be adapted, the fluency and safety of a vehicle queue are improved, a transverse control strategy is responsible for lane keeping, steering and lane changing of the vehicles, and the vehicle queue cooperative control method and device are provided. By accurately controlling the transverse position and the steering angle of the vehicle, it is ensured that the vehicle stably runs in a lane, meanwhile, the lane changing operation can be safely and efficiently completed, the sharp turning and obstacle avoidance cooperative safety control strategy enables a motorcade to rapidly make adjustments when facing a complex scene, sharp turning and obstacle avoidance actions of the vehicle are achieved through cooperative control, and the driving safety of the vehicle is improved. According to the method, collision is avoided, driving safety is kept, information sharing and action coordination between vehicles are achieved through cooperative control of the motorcade, and the safety and stability of the motorcade are further improved.

The invention provides a disposable submarine sediment acoustic characteristic in-situ measuring instrument, which belongs to the technical field of geophysical detection equipment and consists of a disposable part and a floating part. The throwing and abandoning part comprises an acoustic probe rod, a counterweight and a fusing separation mechanism, so that the instrument sinks and is in contact with the seabed; the floating part comprises a battery cabin, a fusing cabin, an electronic cabin and a buoyancy module and is used for controlling, data collecting and floating. The acoustic probe rod is provided with a receiving transducer, the counter weight provides gravity needed by sinking, and the fusing separation mechanism achieves separation of the throwing part and the floating part. The battery cabin provides a power supply, a fuse is arranged in the fusing cabin, and the electronic cabin comprises an electronic device, an underwater wet plugging connector and the like. The buoyancy module controls the sinking posture of the instrument and data transmission in the upward floating process through the empennage and the antenna. The measuring instrument solves the problems that an existing disposable measuring instrument cannot measure the acoustic characteristics of seabed sediments, the sinking process is unstable, and floating separation is unreliable.

The invention relates to the technical field of hybrid electric vehicle hardware-in-the-loop test, in particular to a controller-in-the-loop hybrid electric vehicle fuel consumption simulation test system, which comprises a hardware-in-the-loop test system, a vehicle environment simulation system, a real controller, a fuel consumption test simulation system and an upper computer, the hardware-in-the-loop test system loaded with the whole vehicle environment simulation system and the fuel consumption test simulation system is connected with the whole vehicle real controller through a CAN bus and is controlled through an upper computer. Wherein the hardware-in-the-loop test system serves as a hardware-in-the-loop carrier, and the whole vehicle environment simulation system simulates a whole vehicle operation environment by setting environment parameters and vehicle parameters; the real controller is used as a hardware-in-the-loop control object; and the fuel consumption test simulation system simulates and completes fuel consumption test. The test system can simulate the hybrid electric vehicle to carry out WLTC fuel consumption simulation test, effectively predict and test the operation condition and real fuel consumption of the hybrid electric vehicle, shorten the development period and reduce the development cost.

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.

The invention belongs to the technical field of neodymium iron boron machining, and particularly relates to a neodymium iron boron centralized chamfering and screening device and method.The device comprises a lifting unit, a chamfering unit, an automatic screening unit, a conveying unit and a travelling crane carrying unit; the chamfering unit comprises at least two chamfering machines which are arranged in sequence, the travelling crane carrying unit is arranged above the chamfering unit, and the travelling crane carrying unit is used for feeding the chamfering machines; the lifting unit is arranged at one end of the chamfering unit, and the lifting unit is used for feeding the travelling crane carrying unit; the conveying unit is arranged on one side of the chamfering unit, and the conveying unit is arranged on one side of the discharging end of the chamfering machine. The automatic screening unit is arranged on one side of the lifting unit, and the automatic screening unit is arranged at the discharging end of the conveying unit. According to the automatic grinding machine, automatic discharging, conveying, screening and feeding operation of grinding materials is achieved, the working efficiency is greatly improved, and the defects caused by manual operation are reduced.

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 relates to the technical field of non-standard automation, in particular to an automatic closestool assembling and stacking line which comprises a base assembling and conveying line, a base assembling mechanism, a transfer conveying line, a ribbon fixing mechanism, a packaging and positioning mechanism, a material taking mechanical arm, a material taking mechanism, a stacking and supporting mechanism and a stacking and film wrapping mechanism which are sequentially arranged. A manual assembling position is arranged on one side of the base assembling conveying line and used for manually assembling toilet bases. The seat body assembling mechanism is used for assembling a toilet seat and a toilet base; the transfer conveying line is used for loading an assembled toilet body into a packaging upper cover box packaging base; through seamless butt joint of continuous operation units such as the base assembly conveying line, the base body assembly mechanism and the transfer conveying line, high automation of the whole production process is achieved, manual intervention is greatly reduced, and therefore the production efficiency is remarkably improved.

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.

A headrest rod oiling device relates to the technical field of headrest processing, is used for oiling headrest rods of a headrest, and comprises a machine base and a spraying box arranged on the machine base, the spraying box is provided with a first inserting position and a second inserting position, and the first inserting position and the second inserting position allow the two headrest rods to be vertically inserted into the first inserting position and the second inserting position. The spraying box is provided with an adjusting mechanism used for adjusting the position of the second inserting position so as to adjust the relative distance between the first inserting position and the second inserting position, the spraying box is provided with a pressing mechanism used for fixing the headrest rod located at the first inserting position, and the rear side of the spraying box is correspondingly provided with an oil spraying mechanism used for spraying oil to the headrest rod. And an air blowing mechanism for blowing away residual oil on the headrest rod subjected to oil spraying is arranged in the spraying box. According to the headrest rod oiling device, rapid and accurate oiling of a headrest rod is achieved in a mechanical and automatic mode. And compared with manual oil coating, the working efficiency is greatly improved, and the complexity and time consumption of manual operation are reduced.

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 steam turbine rotors, in particular to finish machining equipment and method for a steam turbine rotor made of an ultra-pure material, the finish machining equipment comprises a bottom plate, the top of the bottom plate is fixedly connected with connecting equipment, one side of the connecting equipment is provided with a rotor assembly, and the other end of a fixing disc is movably connected with a fixing base. According to the finish machining equipment and method for the steam turbine rotor made of the ultra-pure material, after machining is completed, no defect display with the length larger than 1.5 mm exists on the outer circle surface of the rotor body, meanwhile, when the distance between two defects on the same generatrix is smaller than five times of the length of the larger defect, treatment is conducted according to a continuous defect, and when the rotor body is finally inspected, the defect display is completed. Except for the bearing part, the defect larger than 1.5 mm is found on other parts allowed to be ground, local grinding and polishing can be carried out, the polishing depth does not exceed 1.6 mm, smooth transition between the polishing depth and the peripheral surface should be achieved, the polishing device is used for reasonably polishing and grinding a workpiece, and the ground workpiece can be normally used.

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.