36results about How to "Not easy to lock" patented technology

The invention relates to a canard forward-sweep telescoping wing aerodynamic configuration with variable span wing area. The canard forward-sweep telescoping wing aerodynamic configuration comprises a fuselage, canards, wings, and a vertical fin; the wings comprise forward-sweep inner wings and forward-sweep telescopic outer wings having internal connections with the forward-sweep inner wings by a telescoping mechanism; and the telescoping mechanism extends to allow the forward-sweep telescopic outer wings to extend to the outside of the forward-sweep inner wings when the mach number (Ma) of an unmanned aerial vehicle is 0.2, and the telescoping mechanism contracts to allow the forward-sweep telescopic outer wings to contract to the inside of the forward-sweep inner wings when the Ma of the unmanned aerial vehicle is 0.4, wherein the area ratio of the forward-sweep telescopic outer wings to the forward-sweep inner wings is 0.25-0.45. The telescoping wing configuration with variable span wing area adopted in the invention allows the unmanned aerial vehicle to have good aerodynamic performances in scopes of different spatial domains and different speeds and the mobility and the flexibility of the unmanned aerial vehicle to be improved. According to the canard forward-sweep telescoping wing aerodynamic configuration of the invention, when Ma is equal to 0.2 or 0.4, the cruise lift-to-drag ratio of the high aspect ratio aerodynamic configuration is over 20% higher than the cruise lift-to-drag ratio of the low aspect ratio aerodynamic configuration when the unmanned aerial vehicle flies at a low speed, and the cruise lift-to-drag ratio of the low aspect ratio aerodynamic configuration is about 15% higher than the cruise lift-to-drag ratio of the high aspect ratio aerodynamic configuration when the unmanned aerial vehicle flies at a high speed, so the capacities of the cruise flight with the Ma of 0.2 and 0.4 are possessed.

The invention discloses an electromobile battery box and a locking mechanism thereof. The locking mechanism comprises a lock head, a lock sleeve is mounted axially in an inner hole of the lock head in an inserted manner, press-type self-locking units are uniformly distributed along the circumferential direction of the lock head between the lock sleeve and the lock head, each self-locking unit comprises a control shaft connected on the front end face of the lock head in an axial limiting moving inserted manner, and a stopper assembled between the control shaft and the lock sleeve, a locking recessed portion allowing the corresponding end portion of the stopper to be clamped in and mounted between the lock sleeve and the control shaft in an ejected manner to realize locking of the lock head when the control shaft moves forwards to a locking position is arranged on the peripheral face of the lock sleeve, an unlocking groove allowing the corresponding end portion of the stopper to enter to enable the stopper to be capable of being radially separated from the locking recessed portion when the control shaft moves backwards to an unlocking position is formed on the peripheral face of the control shaft, and a resetting elastic member applying a forward acting force on the control shaft to prevent the same to be unlocked is arranged between the control shaft and the lock head. The locking mechanism and the electromobile battery box using the same have the advantages of convenience in operation and stable locking effect.

The invention relates to a urea tank diagnostic system. The system comprises a post-treatment system controller ACU, an electric control unit E-box and computer, a urea tank diagnostic control systemis installed on the computer, the urea tank diagnostic control system comprises a safe access unit, a super-control test function unit, a fault clearing function unit, a real-time monitoring unit, a controller signal timeout checking function unit, an analog controller function unit, a data analysis function unit, the real-time monitoring unit comprises a controller static information reading module, an ACU signal reading module, an ECU signal reading module, an E-box signal reading module and an instrument signal reading module. The method is reasonable in concept, the method is stable in operation and use, good in diagnosis effect, high in efficiency and convenient to sell, the current state of the post-processing system can be read by the after-sales person, the current fault can be removed, can execute an over-control test and provide a diagnosis tool for after-sales and after-sale work.

The invention discloses a face recognition method based on a video stream. The method comprises the steps that multi-frame continuous contrast recognition for high-definition videos is adopted to decode video data of monitoring devices, and data frames are separated to form image data of each frame video, so that the face recognition rate is substantially increased in an exponential order; face feature recognition processing is performed on each frame image to establish a probabilistic arrangement list of face recognition in each frame image; through calculation of fit-goodness list data of face recognition in continuously adjacent frame images, face information in the videos is locked, and then simultaneous recognition analysis is performed on faces of multiple targets to lower the omission rate of the face information; and according to the faces recognized in the video of each monitoring device, face recognition accuracy is calibrated again, so that a more accurate recognition effectis obtained. According to the method, through sufficient application of the monitoring devices, the big data control capability of a city administrative department based video monitoring is improved,and the automation degree is increased.

The invention discloses a simple ground pile lock. The simple ground pile lock comprises a parking rack body, a chip identifier and a tire lock, wherein the tire lock is fixed to the upper end of theparking rack body; the chip identifier is fixed to the edge of one side of the parking rack body; a motor, a loudspeaker, a rim inductor, a control board, a left lock tongue, a right lock tongue and aspring are arranged on the tire lock; the motor drives the left lock tongue and the right lock tongue to rotate through a lock tongue gear; and the spring is arranged among the left lock tongue, theright lock tongue and the lock tongue gear; the two lock tongues rotate, one lock tongue stops working while making contact with a steel wire, due to the action of the spring, the motor gear is stillcapable of rotating to drive the other lock tongue until the rim inductor detects the position of the lock tongue, the motor receives a stopping command sent by the control board, and at this moment,one lock tongue is certainly closed in place, and the loudspeaker prompts completion through voice. The simple ground pile lock facilitates bicycles and electrical motorcycles to orderly park; and thecase of not locking is not easily caused during locking, so that high anti-theft performance is achieved.

The invention relates to a preparation method of a knotting-free surgical suture line. The method comprises the steps of melt spinning, heating, wire pressing, punching, cooling, winding and the like.The surgical suture line prepared through the method comprises a first portion and a second portion distributed in a spaced mode, the width of the section of the first portion is uniform, the width of the section of the second portion is larger than that of the first portion, the first end of the second portion is in arc smooth transition with the first portion, the edge of the second end of thesecond portion is perpendicular to the axial direction of the surgical suture line, a sawtooth portion is arranged between the two ends of the second portion, and a long-strip-shaped hole is formed inthe center inside the second portion. Compared with a traditional surgical suture line, the surgical suture line has the advantages of being free of knotting, capable of easily penetrating through muscles and low in production cost, can shorten the knotting time in the surgical suture process and relieves patient's pain.

The invention relates to the technical field of surgical suture lines, in particular to a knotting-free surgical suture line. The knotting-free surgical suture line comprises a first portion and a second portion distributed in a spaced mode, the width of the section of the first portion is uniform, the width of the section of the second portion is larger than that of the first portion, the first end of the second portion is in arc smooth transition with the first portion, the edge of the second end of the second portion is perpendicular to the axial direction of the surgical suture line, a sawtooth portion is arranged between the two ends of the second portion, the sawtooth portion is provided with a plurality of sawteeth with right triangle sections, the right-angle sides of the sawteethare close to the second end of the second portion and are perpendicular to the axis direction of the surgical suture line, and the inclined edges of the sawteeth are close to the first end of the second portion; a long-strip-shaped hole is formed in the center inside the second portion. Compared with a traditional surgical suture line, the surgical suture line has the advantages of being free of knotting, capable of easily penetrating through muscles and low in production cost, can shorten the knotting time in the surgical suture process and relieves patient's pain.

The invention relates to the technical field of wire harness peeling equipment, and discloses a conducting wire peeling machine with a scrap suction cylinder convenient to install. The conducting wirepeeling device comprises a base and a peeling knife arranged on the base in a sliding manner, wherein the base is also provided with a scrap suction cylinder with the cylinder opening aligned with the peeling knife, a fixed clamping seat is also arranged on the vertical side surface of the base, a through groove penetrating through the fixed clamping seat is formed in the fixed clamping seat, thethrough groove is aligned with the peeling knife, the scrap suction cylinder is inserted into the through groove and can move along the axis of the through groove, an adjusting ring with the axis coinciding with the axis of the through groove is further arranged on the fixed clamping seat and located at the through groove and can rotate around the axis of the through groove, the inner side wall of the adjusting ring is in threaded connection with the outer side wall of the scrap suction cylinder, and the scrap suction cylinder can move in the through groove by rotating the adjusting ring. When the position of the scrap suction cylinder is installed and adjusted, the scrap suction cylinder can be moved only by screwing the adjusting ring, so that rotation of the scrap suction cylinder is avoided, operation is convenient, and the installation difficulty is reduced.

The invention relates to the technical field of a surgical suture line, in particular to a surgical suture line of a winding structure. The surgical suture line comprises a core yarn and winding silk,wherein the core yarn is formed by twisting a plurality of long yarn silk; thick joints in uniform separated distribution are arranged on the winding silk; the winding silk is wound on the core yarn;when the winding silk straightly extends, the space between the two adjacent thick joints on the winding silk is 4 to 15mm; when the winding silk is wound onto the core yarn, the space between the two thick joints in the axial line direction of the surgical suture line is 3 to 13mm. Compared with a conventional surgical suture line, the surgical suture line provided by the invention has the advantages that the winding structure is used; the anti-slip and anti-falling effects are achieved; the production cost is low. In addition, the knotting time in the surgical suture process can also be saved; the pain of a patient can be reduced.

The invention relates to a valve control overvoltage-overcurrent cooperative protection method and system for a flexible direct current converter valve, and relates to the field of direct current transmission, and the method comprises the steps: obtaining a voltage-current operation capability curve of a sub-module in the flexible direct current converter valve during unlocking operation; obtaining the maximum voltage of each current unlocking operation based on the voltage-current operation capability curve, and calculating a voltage-current protection constant value curve of a sub-module in the flexible DC converter valve based on the maximum voltage of each current unlocking operation; and each sub-module controller performs overvoltage protection by using a dynamic overvoltage protection constant value according to the real-time operation current of the bridge arm and the voltage-current protection constant value curve of the sub-module. The constant value of overvoltage protection is dynamically adjusted according to the magnitude of the current in the operation process, the constant value of overvoltage protection is high when the current is small, the constant value of overvoltage protection is low when the current is large, the risk of overvoltage protection action locking of the converter valve under the alternating-current and direct-current fault of the system can be reduced, and the fault ride-through capacity is improved.

The invention relates to the field of target tracking, and discloses a target tracking optimization method under a high-speed dome camera, which comprises the following steps of: triggering selectionof a tracking target; initializing the target by using a kcf operator; a kcf operator is used for selecting a target, and the selected target has similar characteristics with the target during initialization and is subjected to nearest neighbor matching with the target detected by a target detection algorithm; carrying out IOU matching on the selected target and the tracking target of the previousframe; if matching fails, if so, taking the target center selected in the step S3 as a circle center; searching targets within radius gamma, otherwise, taking the target detected by the target detection algorithm as a final tracking target; preserving relevant location information, according to the method, the advantages of the kcf operator and the advantages of the deep learning target detectionalgorithm are integrated, the tracking algorithm is optimized, the target can be accurately tracked in the actual complex and variable environment, and therefore the problem that a high-speed spherical tracking camera is difficult to track and apply in the complex environment is solved.

The invention relates to the technical field of surgical sutures, in particular to an anti-slippery surgical suture which comprises a first part and a second part distributed in a spaced mode. The section of the first part of the surgical suture is uniform in width, and the width of the section of the second part is larger than that of the section of the first part. The second part is elliptic. Along-strip-shaped hole is formed in the middle in the elliptic second part. The length of the hole is not smaller than the length of the short axis of the elliptic second part, and the width of the hole is not smaller than the width of the section of the first part. Compared with a traditional surgical suture, the surgical suture has the advantages of being prevented from slipping and being capable of easily piercing through muscles and low in cost and can save the knot tying time in the surgical suturing process and relieve pains of a patient.

The embodiment of the invention belongs to the technical field of steel rail transportation equipment, and particularly relates to a steel rail support and a steel rail transport vehicle. Therefore, problems that in the transportation process, equipment shakes to easily cause rotation of a locking column, so that a stop block is separated from a supporting beam, and the supporting beam is separated from locking are solved. According to the steel rail support, one end of a supporting beam is rotatably connected with a first stand column; a locking device is arranged on a second stand column and comprises an elastic piece and a telescopic column, the center line of the telescopic column is parallel to the center line of the second stand column, and the elastic piece is connected with the telescopic column and the second stand column; a locking hole is formed in the supporting beam, and the elastic piece is used for driving the telescopic column to stretch into the locking hole; in the steel rail transportation process, the telescopic column stretches into the locking hole to lock the supporting beam, compared with a mode that the supporting beams are locked through check blocks, the supporting beam is not prone to being separated from locking, and the locking reliability of the supporting beam is improved.

The invention discloses an inserted rod type pigeon house door, which comprises a door frame, a house door and an inserted rod, wherein the top end of the house door is hinged to the top end of the door frame; the hinge position is symmetrical about the vertical middle axis of the house door; annular insertion rings are arranged at the centers of the top end and the bottom end of the door frame; the annular insertion rings are horizontally arranged; the inserted rod comprises a rod body and a clamping head; the clamping head is fixed to the top end of the rod body; the rod body is matched with the insertion rings; and the house door is square platy. The inserted rod type pigeon house door has the advantages that the house door cannot be easily damaged and is easily locked; a large impact force can be borne, and rapid locking and opening can be realized.