33results about How to "Precise motion trajectory" patented technology

The invention relates to a method and system for tracking an endoscopic surgical instrument and generating a motion trail of the endoscopic surgical instrument, and belongs to the technical field of image processing. The method comprises the following steps: taking a target position of a surgical instrument in a previous frame video as a center, and sampling by adopting a set distribution form to obtain a plurality of candidate samples of a current frame; respectively inputting the candidate samples into a pre-trained SVM (Support Vector Machine) detection model based on manual features and a pre-trained CNN (Convolutional Neural Network) target detection model, and respectively obtaining positive sample scores after weighted summation of scores of two models of each candidate sample; and taking the candidate sample with the maximum positive sample score as the target position of the surgical instrument of the current frame, and connecting the tracked target positions of each frame to generate the motion trail of the surgical instrument. On the basis of using the trained SVM model classification prediction model, depth features are extracted in combination with neural network features, a background and a target object are effectively distinguished, and the problems that an endoscope image is complex in structure, fuzzy in boundary and serious in shielding condition are solved.

The invention belongs to the technical field of pedestrian navigation and positioning, and relates to a pedestrian inertial navigation method based on action recognition. The method comprises the following steps: collecting IMU data and muscle electricity data by using a wearable device; in a static state, calculating an Euler angle and solving a coordinate rotation matrix by means of IMU data, converting an acceleration in a carrier coordinate system into a navigation coordinate system, and obtaining speed information after integration; after the muscle electricity data is subjected to preprocessing and feature extraction, an SVM model based on statistics and an action correction algorithm is used for recognizing the motion state of the human body in a mixed motion mode, and an action recognition result is obtained; the action recognition result is used for self-adaptively adjusting threshold detection of the zero speed interval, finally, the zero speed is corrected in the zero speed interval through a speed correction method based on the EKF, integration is conducted on the corrected speed, and therefore position information is obtained. According to the method, high positioning precision, small positioning error and good robustness can be realized in a mixed motion mode, and an accurate track can be drawn.

The utility model relates to the technical field of dust-free workshops, in particular to an atomizing and humidifying device which comprises an industrial humidifier, a mist outlet connector is arranged on the upper side of the industrial humidifier, a mist outlet pipe is arranged on the upper side of the mist outlet connector, an adjusting mechanism is arranged at the joint of the mist outlet pipe and the mist outlet connector, and the adjusting mechanism comprises an inserting pipe and a box body. An inserting pipe vertically penetrates through the left side in the box body, a clamping sleeve outer pipe is fixedly arranged on the lower side of the annular face of the inserting pipe, the lower end of the inserting pipe is inserted into the mist outlet connector, and a worm wheel is assembled on the annular face of the inserting pipe in the area in the box body. The mist outlet angle of the mist outlet pipe can be automatically and rotationally adjusted through the adjusting mechanism, the mist outlet angle can be conveniently adjusted to different position angles, automatic adjustment of the angle of the mist outlet pipe is achieved, the trouble of manual adjustment is avoided, the operation process is simplified, and the working efficiency is improved. And meanwhile, the using effect and convenience of the industrial humidifier are remarkably improved.

The invention relates to a material self-adaptive flip-flow device based on non-contact measurement and a screening method, belongs to the technical field of mineral product screening, and solves the problem that a flip-flow screen in the prior art cannot be suitable for characteristics of fed materials. The device comprises a flip-flow screen, a non-contact measuring mechanism and a counterweight adjusting mechanism, the flip-flow screen comprises a fixed frame and a floating frame, and the floating frame is connected with the fixed frame; the balance weight adjusting mechanism comprises a balance weight, and the balance weight is connected with the floating frame. The non-contact measuring mechanism is arranged on one side of the flip-flow screen and used for obtaining the motion characteristics of the fixed frame and the floating frame, and the motion characteristics are used for adjusting the balance weight. The high-efficiency screening device can adapt to the change of characteristics such as treatment capacity, particle size composition, moisture and hardness of different materials, so that high-efficiency screening is realized.

The utility model relates to the technical field of floor drains, in particular to a deodorant antibacterial floor drain, which can be used for ground drainage or water pipe drainage and comprises a first cylinder and a second cylinder, the first cylinder is provided with a water storage portion, the second cylinder is provided with a drainage portion, and the drainage portion is sleeved in the water storage portion. A certain distance is formed between the outer wall of the drainage part and the inner wall of the water storage part, an overflow port is formed in the top of the water storage part, and an annular non-return cover which can move up and down under the hydraulic action like a piston is arranged above the overflow port, so that a water seal and mechanical valve structure is formed; a protruding part is arranged on the inner bottom face of the water storage part and located on the inner side of the water drainage part in the radial direction of the water drainage part. The protruding part can reduce the area of the inner bottom face, so that the speed of water flowing from the water discharging part to the water storage part is increased, impurities mixed in the water can be conveniently taken away by the water, deposition at the bottom of the water seal is reduced, the interior of the water storage part is kept clean, and odor and reptiles are prevented from reversely entering a room.

This utility model relates to the field of lifting equipment technology, specifically disclosing a lifting device with a chain transmission mechanism. The inner walls of the frame are vertically provided with guide rail grooves. Upper and lower rotating shafts are rotatably installed between the top and bottom walls of the frame, with upper and lower sprockets fixedly fitted near their respective ends. The lifting platform includes a lifting frame, guide wheels rotatably installed on the top and bottom of the two side walls of the lifting frame and rolling along the guide rail grooves, adjusting pulleys slidably engaged with the top and bottom ends of the two side walls of the lifting frame in a horizontal direction, and tensioning screws for adjusting the horizontal position of the adjusting pulleys. The outer end of the adjusting pulleys is provided with rollers that roll vertically along the inner wall of the guide rail groove. Chains are connected between the top and bottom ends of the two side walls of the lifting frame, with the top and bottom of the chains passing over the upper and lower sprockets respectively. A power component for driving the upper rotating shaft is provided at the top of the frame. This design effectively solves the problems of unstable movement and inconvenient leveling of the lifting platform in lifting equipment.

The invention relates to a design method for monitoring lake and reservoir water flow field floaters. The method comprises the following steps: selecting a control equation; selecting an analysis mode; modeling and grid division are carried out; setting boundary conditions and parameters; and carrying out numerical simulation and comparative analysis on the multi-type drifts. Through physical experiment and computer simulation of the seven elaborately selected drifts, the flowing characteristics of the seven drifts and the pressure difference between the left side and the right side in the water flow are calculated, and according to the characteristic that the objects tend to move towards the side with the small pressure difference, through comparison and simulation, the drifts with the small pressure difference can be obtained. And determining that the ball shape is the shape most easily drifting in the water flow with the maximum flow speed, so that the shape of the ball-shaped object serving as the drifting buoy is obtained, and the movement track of the ball-shaped drifting object can accurately represent the flowing track of the water flow in the lake and reservoir.

The application discloses a PVC sheath hot-pressing device and relates to the technical field of PVC sheath processing.The device comprises a rack, a hot-pressing assembly and a material taking assembly.A cushion plate is arranged on the rack, one side of the cushion plate is provided with a limiting block one, a plurality of limiting holes one for placing PVC sheaths are arranged on the limiting block one, the other side of the cushion plate is provided with a limiting block two, a plurality of limiting holes two for inserting wire harnesses are arranged on the limiting block two, the hot-pressing assembly is arranged on the rack and is used for hot-pressing the PVC sheaths on the cushion plate to the wire harnesses, and the material taking assembly is arranged on the rack and the cushion plate and is used for taking out the hot-pressed PVC sheaths from the limiting block one.The device is provided with an automatic material taking assembly, and the mechanized discharging can avoid the contact of personnel with high-temperature PVC sheaths, thus avoiding the risk of scalding from the root.The application automatically completes sheath taking out and lifting through a cylinder, a rack and a gear transmission, and the production efficiency is improved.The multiple limiting and supporting structures guarantee smooth and accurate operation, avoid sheath deformation, and ensure product quality and batch production consistency.

This utility model belongs to the field of battery loading and unloading transportation technology, and discloses an auxiliary replacement platform for battery packs in energy storage power stations. The platform is mounted on a forklift with a certain load-bearing capacity. The front end of the forklift has a lifting function, enabling it to transport the replacement platform to a suitable position for loading and unloading. The platform has an auxiliary pushing device for battery packs, a platform height adjustment device, and a clamping device to ensure safe transport of battery packs. This platform has significant advantages such as automatic control, solving the problem of inconvenience in using traditional battery disassembly and assembly devices.

The application discloses a single crystal silicon wafer processing clamp, and relates to the technical field of single crystal silicon processing, which comprises a mounting ring, a driving gear ring, a primary clamp assembly, a guide, a secondary clamp assembly and a driving unit. The mounting ring serves as a bearing base, the top of the mounting ring is provided with the driving gear ring, the inner ring is provided with the primary clamp assembly, the outer wall is fixedly connected with the guide, the guide is internally provided with the secondary clamp assembly, and the driving unit is internally provided with a built-in driving unit which is connected with the two-stage clamp through the mounting ring. For different thicknesses of silicon wafers, thin silicon wafers are clamped by the silicon wafer clamping plate through the driving motor one and the driving gear ring and the inclined push head; thick silicon wafers are clamped by the silicon wafer clamping arm after being centered by the driving motor two and the driving ring and the centering arm, and are clamped by the silicon wafer clamping arm. The clamp integrates the grading clamping and the precise guide structure, has the protection design, is high in adaptability, accurate in clamping, can avoid damage to the silicon wafer, is suitable for automatic processing, and improves the processing efficiency and the qualified rate.

This utility model discloses a mechanical extension structure for a sofa, including a base, a drive unit, two bases for mounting the seat cushion structure, and extension units respectively mounted on the two bases. The extension unit includes a leg assembly, a swing mechanism, and a backrest assembly. The swing mechanism includes a front support rod, a middle connecting rod, a rear support rod, a front swing rod assembly, a connecting rod assembly, and a rear swing rod assembly. One end of the front support rod and one end of the rear support rod are respectively hinged to the middle connecting rod, and the other end of the front support rod and the other end of the rear support rod are respectively hinged to the base. The middle connecting rods of the two swing mechanisms are connected by a synchronizing rod. The front swing rod assembly includes a front main swing rod with one end hinged to the base and a front auxiliary swing rod with one end hinged to the middle connecting rod. The front main swing rod and the front auxiliary swing rod are hinged together. The rear swing rod assembly includes a rear main swing rod with one end hinged to the base and a rear auxiliary swing rod with one end hinged to the middle connecting rod. The rear main swing rod and the rear auxiliary swing rod are hinged together. The front swing rod assembly is connected to the rear swing rod assembly through the connecting rod assembly.

This utility model discloses a reducer device for emulsion drilling rigs, including a first mounting shell, a second mounting shell disposed on the first mounting shell, and fixing bolts disposed between the first and second mounting shells. It enables rapid fixing and disassembly of the reducer body without disassembling numerous related components, significantly simplifying the replacement process, shortening downtime, and reducing the impact on construction progress. In terms of maintenance, the ease of assembly and disassembly reduces reliance on confined operating spaces and the risk of secondary damage due to improper operation. Regarding costs, it reduces labor hours and labor costs; reduces wear and tear on surrounding components from repeated disassembly, lowering the probability of unplanned replacements; and eliminates the need to stock complete units, reducing inventory costs. Furthermore, the flexible fixing method facilitates adaptation to equipment upgrade needs without requiring modification or replacement of the entire machine, further reducing costs, making it particularly suitable for scenarios such as underground mining.

The invention relates to a grabbing mechanism and a grabbing method thereof.The grabbing mechanism comprises a floating locking unit and a grabbing unit, the floating locking unit comprises a first support part, an X-axis kinematic pair, a Y-axis kinematic pair, a second support part, a locking driving part and a locking shaft, the second support part has the degree of freedom of movement in the plane, the second support part is provided with a locking hole, and the locking shaft is arranged in the locking hole; the locking driving piece drives the locking shaft to move in the Z-axis direction, the locking shaft penetrates through the locking hole and comprises a locking part, a releasing part and a transition part, the shaft diameter of the locking part is the same as the hole diameter of the locking hole, the shaft diameter of the releasing part is smaller than the hole diameter of the locking hole, and the grabbing unit grabs products. When the product is grabbed, the grabbing mechanism is in a locking state, the product can be accurately grabbed, when the product is assembled or placed, the grabbing mechanism is in a floating state, the product can be assembled to another product with a certain tolerance in a floating mode or transferred to a carrier with a certain tolerance in a floating mode, and state switching of the grabbing mechanism is achieved through a simple structure.

The utility model discloses a textile color fastness testing arrangement relates to color fastness testing arrangement technical field, and its technical scheme is: including frame component, be equipped with test drive assembly in frame component, test drive assembly top is equipped with test movable assembly, frame component top is equipped with test pressure assembly, and the beneficial effect of a kind of textile color fastness testing arrangement is: through electric push rod in test pressure assembly provides controllable driving force, cooperate pressure sensor and pressure display to realize the real -time monitoring and accurate adjustment of friction pressure, replace traditional pressure plate deadweight pressure mode, effectively avoid the pressure fluctuation caused by mechanical vibration, sample surface unevenness etc., ensure that actual friction pressure is consistent with preset value, greatly improve the accuracy and repeatability of test result, simultaneously, operator can adjust pressure value according to different textile types quickly, need not to replace pressure plate, and operation efficiency is significantly improved.

The utility model discloses a kind of electric push rod load life testing devices, comprising: rack;Fixed seat is located in the lower part of the rack, for fixing the electric push rod to be measured;At least two horizontal parallel arrangements of sliding load, sequentially arranged in the vertical direction above the electric push rod to be measured;The lowermost sliding load is connected with the output end of the electric push rod to be measured;Guiding mechanism, vertically arranged on the rack, for guiding the sliding load along vertical direction sliding;Barrier, located on the rack or guiding mechanism, for abutting below each layer of sliding load to maintain the spacing between layers;Wherein, the electric push rod to be measured pushes the lowermost sliding load to move up and sequentially triggers the sliding load linkage of adjacent upper layer, forms load stepwise increasing.The utility model has the advantages that: the stepwise increasing of load is realized, the dynamic scene of load layer-by-layer superposition in actual working condition can be simulated, and test result is closer to real application.

The invention, which relates to the technical field of electrical element manufacturing, discloses a bionic dry adhesion mechanism comprising a rack and two adhesion mechanisms arranged symmetrically. The adhesion mechanism comprises a tangential micro-displacement mechanism, a moving seat, a sensing assembly and an adhesion pad; the tangential micro-displacement mechanism is arranged on the rack; the output end of the tangential micro-displacement mechanism can drive the moving seat to be close to or far away from the other adhesion mechanism; the sensing assembly comprises a force sensing element and a distance sensing element; the force sensing element is fixedly arranged at the lower end of the movable seat; the distance sensing element is fixedly arranged at the lower end of the force sensing element; the adhesion pad is fixedly arranged below the distance sensing element; an array type wedge-shaped bristle bundle used for adhering a target object is fixedly arranged on the adhesion pad; the force sensing element can sense tangential force and normal force; the direction of the tangential force is parallel to the adhesion surface of the adhesion target object, and the normal force is perpendicular to the adhesion surface of the adhesion target object. Flexible adhesion to the target object can be achieved, the adhesion effect is guaranteed, and the carrying safety of the target object is improved.

The utility model relates to a heating furnace stepping device which is used for improving the connection mode of a movable water beam and an external fixed water pipe. The device comprises a lower header assembly, a flexible assembly and an upper header assembly, and the flexible assembly is composed of an L-shaped bent pipe, a ball rotating connector, a stop valve and the like so as to adapt to movement of a movable water beam. The stepping device is simple in structure, convenient to install, capable of effectively reducing occupied space, improving motion precision and prolonging service life, suitable for various hot rolling heating furnaces and capable of optimizing layout of a pipeline system.

The invention provides a cleaning head and cleaning equipment, and relates to the technical field of cleaning equipment. The cleaning head comprises a first shell, a second shell and a scraping strip assembly, the second shell wraps part of the first shell and defines a containing cavity, and a rolling brush groove protruding towards the containing cavity is formed in the side, away from the second shell, of the first shell to contain the cleaning unit; the scraping strip assembly comprises a transmission mechanism and a scraping strip body which are connected, the scraping strip body is partially located outside the containing cavity and used for scraping the operation surface, and the transmission mechanism is used for driving the scraping strip body to be switched between the extending state and the retracting state. At least the part, attached to the inner wall of the rolling brush groove, of the transmission mechanism is of an elastic sheet structure, and the elastic sheet structure enables the scraping strip body to be attached to the inner wall of the rolling brush groove in two states through elastic deformation of the elastic sheet structure, so that the space utilization rate of the containing cavity is increased, miniaturization of the cleaning head is facilitated, and the attaching precision and switching smoothness of the scraping strip are improved; meanwhile, part abrasion is reduced, and the service life and reliability of cleaning equipment are prolonged.

The utility model relates to robot technical field discloses a four -axis robot point gum single machine, including work table, the left side bottom fixed connection of work table has mounting plate no.

The utility model relates to a ton bag convenient to turn over materials, in particular to the technical field of labor and material property transportation, which is provided with foldable supporting foot columns, guide limiting rings, crossed reinforcing rib plates and the like and connected through rotary hinges between the foldable supporting foot columns and a rigid supporting frame. The foldable supporting foot columns can form stable included angles with the ground when being unfolded through the linkage inhaul cable assembly and the limiting and guiding effects of the guiding limiting rings on the linkage inhaul cable assembly, stable supporting is provided for the ton bag, and meanwhile the guiding limiting rings ensure that the motion trail of the linkage inhaul cable assembly is accurate. The crossed reinforcing rib plates in the rigid supporting frame form a #-shaped bearing structure, so that the overall rigidity is enhanced. The movable discharging bottom plate is made of polyurethane reinforced fabric composite materials and provided with anti-sliding protruding lines, durability and material bearing stability are improved, and then the effects that the device can achieve stable supporting and precise linkage and safely and efficiently complete material overturning and bearing are achieved.

A bottle separating mechanism comprises a bottle separating finger assembly, a chain driving assembly used for driving the bottle separating finger assembly and a guiding assembly used for guiding the bottle separating finger assembly. The bottle separating finger assembly comprises a guide seat, a mounting seat arranged on the guide seat and a plurality of bottle separating fingers arranged on the mounting seat, a T-shaped groove penetrating through the two ends of the mounting seat is formed in the mounting seat, the lower ends of the bottle separating fingers are locked in the T-shaped groove, and guide wheels are arranged at the two ends of the guide seat respectively; the guide assembly comprises guide plates located at the two ends of the bottle separating finger assembly, track grooves are formed in the inner side faces of the guide plates, and the guide wheels are arranged in the track grooves. The principle of the utility model is as follows: the bottle separating finger adopts a quick-change mode, so that the position adjustment and disassembly are more convenient; the chain is used for driving the bottle separating finger assembly, and the track groove of the guide plate is matched with the roller to guide the bottle separating fingers, so that the movement track is more accurate; the guide plates are arranged at the two ends of the bottle distributing assembly, so that the bottle distributing assembly is more stable under the high-speed operation condition.

This utility model relates to the field of fire sprinklers, specifically a fire sprinkler head, including a receiving cavity and a closed cavity. The receiving cavity is vertically connected, and the closed cavity is fixedly disposed at the bottom opening of the receiving cavity to close the bottom of the receiving cavity. A movable frame is slidably disposed in the middle of the closed cavity, and a sealing plate with the same shape as the opening of the closed cavity is fixed at the bottom of the movable frame. The sealing plate can move with the movable frame to close the bottom of the closed cavity. The bottom of the closed cavity has multiple arc-shaped grooves with openings facing the center of the closed cavity and spiraling upward. Multiple adjusting blocks adapted to the shape of the bottom opening of the arc-shaped groove are fixed on the outside of the sealing plate. The beneficial effect is that by pushing the bottom sealing plate into the closed cavity, the adjusting blocks simultaneously enter the arc-shaped groove and slide along a spiral upward trajectory guided by the groove wall. After the pushing force disappears, the adjusting blocks slide in the opposite direction along the arc-shaped groove and lock into the locking groove. The sealing plate then descends to a preset position to close the bottom of the receiving cavity, realizing convenient shutdown of the fire sprinkler head after accidental triggering.

The utility model discloses a water cooling device for a rigid polyvinyl chloride cable pipe, and relates to the technical field of cable pipes. The device comprises a workbench, a water tank is formed in the top of the workbench, a fixing plate is fixedly connected to the top of the workbench, a placement hole is formed in the outer side of the fixing plate, a water pump is fixedly connected to the top of the fixing plate, the water outlet end of the water pump penetrates through the fixing plate and is fixedly connected with a splitter plate, and the splitter plate communicates with the water outlet end of the water pump; a water inlet end of the water pump is fixedly connected with a water pipe, one end, far away from the water pump, of the water pipe is communicated with the water tank, a filtering mechanism is arranged between the water pipe and the workbench, a plurality of through holes are formed in the outer side of a filtering frame, and cooling water can fully pass through the through holes; impurities in water are effectively intercepted.

The invention discloses a multi-rotor transmission control method and a multi-rotor transmission control system, and the method achieves the autonomous cascade control between different drivers corresponding to different linear motor modules when rotors cross the different linear motor modules, and greatly reduces the workload of an upper controller. The upper controller does not need to carry out real-time control scheduling on all the drivers, and only needs to issue a high-level control instruction, so that the complexity and cost of system development are reduced. Data interaction and control cooperation are carried out among the drivers through the special inter-stage communication bus, the bus communication bottleneck is avoided, and the communication real-time performance of the system is improved. Therefore, the rotor can stably and continuously move between the linear motor modules, the problems of unstable thrust and speed fluctuation when the rotor crosses the joint of the linear motor modules in the prior art are solved, and the control performance and the operation reliability of the system are remarkably improved.

The utility model discloses a mounting structure of a folding frame of a clothes airing machine. The mounting structure comprises the folding frame, a rod seat and an inverted L-shaped side plate, a first rail is arranged on the rod seat, and the connecting rod at the tail end of the folding frame is connected to the first rail; the inverted L-shaped side plate comprises a vertical plate and a transverse plate, and a notch is formed in the outer side of the transverse plate; an upper guide rail is fixedly mounted at the bottom of the transverse plate, and a second rail is arranged on the upper guide rail; the first track and the second track correspond to each other up and down and are positioned in the same vertical plane; the upper guide rail comprises an upper bottom wall, a first side wall and a second side wall are arranged on the lower side of the upper bottom wall, a first folded edge is arranged on the lower portion of the first side wall, and a second folded edge is arranged on the lower portion of the second side wall, so that a second track is formed; the head end of the folding frame comprises two first connecting rods, the first connecting rods are connected with upper sliding blocks, the two upper sliding blocks get close to or away from the second track, and the first folding edge and the second folding edge limit the upper sliding blocks to be separated from the second track downwards; therefore, installation is simplified, stress is balanced, and friction noise is reduced.

The invention discloses a loading machine working device drag reduction mechanism and a motion trail control method, and belongs to the technical field of loading machines. The loading machine working device drag reduction mechanism comprises a bucket, a bucket rod mounting base mounted in the middle of the back face of the bucket and large arm mounting bases mounted at the two ends of the back face of the bucket; and shielding dustproof mechanisms are arranged at the inner tops and the inner bottoms of the bucket rod mounting seat and the large arm mounting seat. The upper end and the lower end of the bucket rod mounting base and the upper end and the lower end of the big arm mounting base are each provided with a shielding dustproof mechanism composed of a winding box, a rotating rod, a clockwork spring, a shielding belt, a wire groove and a clamping plate, the shielding belts cover the outer sides of the mounting bases, the clamping plates are fixed to the big arm and the bucket rod, and the shielding dustproof mechanisms are arranged along with rotation of the big arm and the bucket rod. And the shielding belt can be automatically retracted and released to fully cover the mounting seat, so that the dustproof effect is better in the working process of the loading machine, and the frictional resistance at the joint is effectively reduced.

The utility model provides a valve locking device, which belongs to the technical field of valves and comprises a valve body and a rotatable handle at the top of the valve body, one end of the handle is provided with a valve body limiting bump, the top of the valve body is provided with a closing limiting block and an opening limiting block corresponding to the valve body limiting bump, and one side of the valve body limiting bump is provided with a locking component; the locking assembly comprises a locking rod, a mounting groove is formed in one side of the limiting protruding block of the valve body, the locking rod is arranged in the mounting groove in a sliding mode, limiting plates are arranged on the adjacent sides of the closing limiting block and the opening limiting block, locking holes are formed in the positions, corresponding to the locking rod, of the tops of the limiting plates, and the bottom end of the locking rod is arranged in one set of locking holes in a penetrating mode. The handle is locked through the locking device; compared with a traditional external lock chain or padlock, the built-in locking structure directly acts on a valve operation part, the loosening risk caused by vibration, collision or manual mistaken touch is avoided, it is ensured that the valve is kept in a stable state in the scene needing to be normally opened or normally closed, and stability is improved.

This utility model relates to the field of curling irons, and more particularly to an adjustment device for an adjustable curling iron, including an adjustment part comprising a rotating paddle, a first gear and a second gear, and a driven gear; and a rotating part comprising a positioning plastic, heating wires, a drive shaft, and a support shaft. This utility model achieves high precision and stability in adjusting the curling area of ​​the curling iron through precise gear transmission and axial limiting design. The rotating paddle, through meshing with the first and second gears, can precisely control the rotation angle of the driven gear, thereby driving the coordinated movement of the drive shaft. The first limiting protrusion passes through the first limiting groove and the moving groove, ensuring the movement of the positioning plastic with the heating wire attached when the drive shaft operates, ensuring precise positioning and smooth movement of the rotating parts, effectively preventing the curling iron from shaking and loosening during use, and allowing for arbitrary adjustment of the size of the curling area formed by each heating wire, improving the accuracy of the curling iron and the user experience.

The present invention belongs to the field of unmanned driving technology, and specifically discloses a synchronous positioning and mapping method based on heterogeneous multimodal data fusion. The present invention solves the problems existing in traditional positioning and mapping methods when applied to complex environments such as tunnels by means of data fusion of millimeter-wave radar and lidar, filtering of dynamic objects, enhancement of loop detection, and global consistency optimization, and provides a more accurate, stable, and adaptable positioning and mapping method. The method of the present invention can be applied to the positioning and mapping of autonomous mobile devices such as drones and robots in dynamic environments such as tunnels, and can provide stable positioning and map building capabilities in the presence of dynamic obstacles (such as construction equipment, vehicles, etc.) and low light conditions, significantly improving the positioning accuracy, map building capabilities, and system stability of drones or robots in complex dynamic environments.