56results about How to "With automatic positioning function" patented technology

The invention relates to a front opening unified pod with an elliptical latch structure. The front opening unified pod mainly comprises a unified pod body; a plurality of slots are arranged inside the unified pod body and used for accommodating a plurality of wafers; an opening is formed on one side surface of the unified pod body and used for input and output of the plurality of wafers; one edge of the opening is provided with a door body; the door body is provided with an external surface and an internal surface, and the internal surface is combined with the opening of the unified pod body for protecting the plurality of wafers placed inside the unified pod body; the front opening unified pod is characterized in that: at least one latch structure is configured inside the door body, wherein the latch structure comprises an elliptical cam, a pair of sliding devices and a guide structure; the elliptical cam is provided with a pair of V-shaped grooves; a sliding groove is positioned on the surface of the elliptical cam; each sliding device is provided with an embedded part; the guide structure is arranged on the sliding device; and the embedded parts are embedded in the sliding groove and used for respectively embedding the pair of sliding devices on the elliptical cam.

The invention discloses an intelligent component transporting method and system used for a prefabricated building. Components conveyed to a construction site are numbered according to a code system made according to a construction drawing and correspond to installation positions in a one-to-one mode, and the numbered components are conveyed to be within the hoisting range of a tower crane at the construction site according to the construction sequence; the tower crane hoists the components to a travelling bogie in sequence, the components are transversely conveyed to the workpiece loading position of each intelligent hanging lifting unit through the traveling bogie, the intelligent hanging lifting units convey the components to the installation stations, the unloaded traveling bogie returns to be loaded with the next component, and one working cycle is completed; and a climbable supporting base is controlled by an intelligent control device to climb to the new construction station upwards and automatically every time one or two storeys of the building are completed, and the next round of construction is conducted. The intelligent component transporting system is composed of a component conveying device and an intelligent control system. Building formwork components can be conveyed to the installation positions through crossed arrangement of longitudinal beams and transverse beams, and time and labor are saved.

The invention relates to an encrypted writing signing mobile terminal, comprising a display module, a writing input module, a control operation module and a communication module for data exchange. The display module, the writing input module and the communication are respectively connected with the control operation module. The encrypted writing signing mobile terminal also comprises a data processing module which comprises writing signing software, wherein the writing signing software can be executed by the control operation module to realize the writing signing function, and the data processing module is connected with the control operation module. The invention improves the automatic office level and efficiency of governments and enterprises, realizes the purpose that office business can be handled anywhere at any time, and reduces the carbon emission.

The invention discloses a portal crane and GPS positioning technology combined concrete pouring method. Based on a portal crane and a main control machine, a concrete pouring area is planed through asurveying and mapping system according to the area and elevation of a concrete pre-pouring area to form a pouring area net, and meanwhile a pouring line plan is calculated; the pouring coordinate of each grid of the pouring area net is set to be A (X, Y and Z); a GPS module is mounted on an automatic door bin located at the portal crane hanger end; the position coordinate A1 (X1, Y1 and Z1) of theautomatic door bin is obtained in real time; and a control room host displays the operation direction of the position coordinate A1 (X1, Y1 and Z1) of the automatic door bin and the distance betweenthe position coordinate A1 (X1, Y1 and Z1) of the automatic door bin and a next pouring area target. The automatic positioning function is achieved, thus a large amount of manpower can be saved, the cost is reduced, moreover, the moving precision can be improved, the pouring efficiency is remarkably improved, safety and reliability are achieved, the construction effect is very good, and the portalcrane and GPS positioning technology combined concrete pouring method is suitable for being applied and popularized.

An intelligent reversing radar system and an automatic control method thereof relate to a radar system and a control method thereof. The system comprises at least two sensors; each sensor comprises an ultrasonic sensing unit and a control unit; each control unit comprises a single-chip microcomputer, an emitting circuit and a receiving circuit, which are connected in sequence; the single-chip microcomputer of each sensor is connected with a connector; the single-chip microcomputer of the main control sensor is connected with external equipment by an external data line; all single-chip microcomputers are connected by an internal communication line and are respectively connected with a reversing lamp signal line and a grounding line. The method comprises the steps that the system is subjected to self-inspection after all sensors realize automatic positioning; the system emits an ultrasonic wave and receives a returning signal; the signal is subjected to data processing after being amplified and is finally output to the external equipment by the main control sensor. According to the intelligent radar reversing radar system and the automatic control method thereof, a hardware circuit can be simplified, the performances are stable and reliable, the positions of the sensors can be fast and accurately identified, and the radar system can be simply and reliably controlled and is suitable for the configuration of different vehicle models.

The invention discloses an inlet and outlet damping expansion joint of an anti-fatigue type pump. The expansion joint comprises flanges, a limiting protecting sleeve and a corrugated pipe, wherein the flanges are respectively welded at the two ends of the corrugated pipe, the flanges at the two ends are respectively provided with a lug plate, a pull rod penetrates through the lug plates, the two ends of the pull rod are used for connecting the lug plates together through nuts, the inner side end of each lug plate is provided with an adjusting nut, the limiting protecting sleeve is sheathed on the corrugated pipe, the inner wall of the limiting protecting sleeve is in contact with peaks of the corrugated pipe, and one end of the limiting protecting sleeve is fixedly connected with the inner end surface of each flange. The expansion joint has the further improvement that the two limiting protecting sleeves are respectively and fixedly connected with the inner end surfaces of the flanges, the two corrugated pipes are coated by the limiting protecting sleeves, the inner wall of each corrugated pipe is provided with a corrosion-resistant layer, and a spherical spacer and a conical spacer assembly are arranged between each nut and each lug plate. The expansion joint has the advantages that the fatigue failure of the parts at the two ends of the corrugated pipe is effectively prevented, the service life is obviously prolonged, and the corrosion-resistant property is higher.

The invention discloses a self-located telephone receiver. The self-located telephone receiver comprises a shell, a reed, a coil, magnets and a magnet yoke; the shell comprises a bottom box and an upper cover; the reed comprises a fixed part and a vibration part; the coil and the magnet yoke sleeve the vibration part sequentially; the magnets are respectively arranged at the upper and lower sides of the vibration part; the magnets are fixedly connected with the inside surface of the magnetic yoke; the vibration part is in transmission connection with a vibration film through a conduction rod; the magnet yoke is an encircled structure and formed by an upper bottom, a lower bottom, a left side and a right side; and the magnet yoke is fixed in the shell, wherein the upper bottom surface near the front end of the shell is shorter than the lower bottom surface. A space for containing the reed and the conduction rod, combining the reed with the condition rod and enabling the reed and the conduction rod to freely vibrate is at the front end of the upper bottom surface and the bottom box; therefore, when the telephone receiver is assembled, the lower bottom surface of the magnet yoke is only necessary to resist the front end of the bottom box; an extra locating fixture is unnecessary; and the self-located telephone receiver is accurate to locate and high in precision.

The invention relates to a multi-station compound hollow insulator flange cementing machine. According to the existing cementing machine, the height of each compound hollow insulator is different so that a compound hollow insulator flange only can be singly produced, a sealing ring cannot be compressed in place and sealing leakage is caused. Therefore, the cementing efficiency is low, the energy consumption is great and the quality is instable. Therefore, the multi-station compound hollow insulator flange cementing machine comprises a bottom plate and a top plate; the bottom plate is internally provided with heating device and N hydraulic cylinders are arranged below the bottom plate; N flange fixing devices are arranged at positions on the bottom plate, which correspond to the N hydraulic cylinders; N adjusting pressing devices are arranged at the positions below the top plate, which correspond to the N flange fixing devices; and N groups of stations are formed by the N hydraulic cylinders, the N flange fixing devices and the N adjusting pressing devices, and N is a natural number which is more than or equal to 2. According to the multi-station compound hollow insulator flange cementing machine, the cementing of a plurality of the compound hollow insulator flanges can be realized; the cementing machine has an automatic positioning function and prevents a product from being flattened; and furthermore, the cementing machine has the advantages of high production efficiency, low heating power consumption, good product stability and the like.

The invention relates to the technical field of car body skin welding, in particular to an autonomous mobile robot system for spot welding of a passenger car side wall skin and a working method. The autonomous mobile robot system for spot welding of the passenger car side wall skin comprises a truss manipulator system, a control system and a single-face double-spot welding system, wherein the single-face double-spot welding system comprises a single-face double-spot welding machine; the truss manipulator system comprises a truss steel structure and a manipulator mechanism which is arranged onthe truss steel structure and used for moving the single-face double-spot welding machine; and the control system comprises a demonstrator, a truss manipulator control box and a single-face double-spot welding machine control box. The autonomous mobile robot system for spot welding of the passenger car side wall skin provided by the invention can not influence existing equipment and personnel operation space, is suitable for arrangement shapes of skin welding spots of various different vehicle types, has the functions of automatic locating and automatic moving of the positions of the welding spots, achieves automatic spot welding of the passenger car side wall skin, is beneficial to reducing the labor intensity of operators, and is high in production efficiency, uniform in welding spot distribution and good in welding quality.

The invention discloses a ratchet wheel positioning anti-falling climbing frame. The frame comprises a guide rail, wall-attached guide bases, anti-falling devices and the like, each anti-falling device comprises an anti-falling wheel, an elastic device and a pair of pawls distributed on the two sides of the corresponding anti-falling wheel, wherein each elastic device is connected between the corresponding pair of pawls and maintains the distance between the pair of pawls by providing pre-tightening force, and ratchet wheel teeth are arranged on the side surface of each anti-falling wheel; andwhen the guide rail ascends, the anti-falling wheels rotate clockwise, and when the ratchet wheel teeth collide with the pawls, the pre-tightening force is overcome by inclined face mutual thrust sothat each pair of pawls are pulled open to enable the ratchet wheel teeth to rotationally pass; and when the guide rail descends, the anti-falling wheels rotate anticlockwise, the ratchet wheel teethmeshes with the pawls when colliding with the pawls to prevent the ratchet wheel teeth from rotationally passing, so that the guide rail is braked, and the guide rail is prevented from descending. Theframe is simple in structure, low in machining cost, convenient to maintain and high in reliability and has an automatic positioning function.

The invention discloses a drilling machine for processing a brake pad with an automatic positioning function. The machine comprises a bottom plate, a movable room and a fixing frame, the bottom of themovable room is fixedly connected with one side of the top of the bottom plate, one side of the bottom of an inner cavity of the movable room is fixedly connected with a first motor by a connecting block, an output shaft of the first motor is fixedly connected with a threaded rod through a coupling, and the technical field of brake pad processing is related. The drilling machine conducts transmitting on the brake pad well when the brake pad is processed, when the brake pad is transmitted to a designated station, no manual operation is required, a drilling mechanism can be automatically openedand drill the brake pad, the use of an operator is facilitated, after the brake pad is processed, the brake pad is handled very well, the labor intensity of the operator is reduced, when the brake pad is processed, and the brake pad is well fixed to ensure the normal operation of the processing.

The invention discloses a nut. The nut comprises a nut, an outer ring and a spring gasket, wherein an axial end of the outer ring is movably sleeved at a corresponding end of the nut and is provided with a limit part capable of preventing the nut from being separated from the outer ring; an accommodating cavity accommodating the spring gasket is formed in the outer ring; the spring gasket is arranged inside the accommodating cavity and is inserted into a threaded rod of a bolt assembly; and the accommodating cavity is positioned on the inner wall of the other axial end of the outer ring and is provided with an abutted surface matched with the end face of a corresponding end of the spring gasket. The nut has the advantages that: when the bolt assembly is screwed down, the nut applies a pressure on the spring gasket sleeved on the threaded rod to press the spring gasket tightly; thus, the end face of an axial end of the spring gasket and the inner wall of the accommodating cavity positioned on the other axial end of the outer ring are matched and attached to clamp the threaded rod and enhance the pretightening force between the nut and the threaded rod; and therefore, the nut cannot be easily loosened and fallen off when suffering from intensive vibration and irregular strong fluctuation, thereby prolonging service life.

The invention provides an intelligent detecting and sizing device for an aeroengine spindle. The intelligent detecting and sizing device comprises a base; the base is connected with three upright columns which are uniformly distributed in a circumferential manner; the upright columns are connected with a lower clamping plate, a sizing plate, an upper clamping plate, a lower fixing plate and an upper fixing plate; a grating ruler guide rail and a grating ruler are fixed between the upper fixing plate and the lower fixing plate; a grating ruler displacement sensor sliding block is connected with a probing screw rod which is connected with an optical fiber displacement sensor probe; a screw rod stepping motor which forms a screw rod pair with the probing screw rod is installed in the center of lower clamping plate; three stepping motors are uniformly distributed at the periphery of the screw rod stepping motor and are connected with the upper ends of three lead screws respectively; the lead screws form lead screw pairs with the upper clamping plate, the sizing plate and the lower clamping plate respectively and are fixed to the base; three hydraulic cylinders are uniformly distributed on each of the upper and lower clamping plates along the circumference; a piston rod of each hydraulic cylinder is fixed with a clamping head; three hydraulic cylinders are uniformly distributed at the periphery of the sizing plate along the circumference; and the end part of each piston rod of each hydraulic cylinder is connected with a sizing ring through a flexible steel wire rope. With adoption of the intelligent detecting and sizing device, stable intelligent detection and sizing with high accuracy and high efficiency is realized.

The invention discloses a robot capable of being switched between a wheel mode and a leg mode. The robot capable of being switched between the wheel mode and the leg mode comprises wheels, a controller, mounting plates, a laser scanner, a gear, a mounting rack, a middle motor, a vehicle body and a navigation positioner; the mounting plates are arranged at the two ends of the vehicle body; the laser scanner is arranged on the mounting plate; pin holes are formed in the two sides of the laser scanner; the controller is arranged above the vehicle body; a wireless signal receiver is arranged in the controller; the navigation positioner is arranged on one side of the wireless signal receiver; an intelligent processor is arranged under the navigation positioner; the wheels are arranged on the vehicle body; and fixing pieces are arranged between the wheels. The robot capable of being switched between the wheel mode and the leg mode has the advantages that the structure is simple, the operation is convenient, a remote wireless signal can be received to operate, an automatic positioning function can be realized, obstacles can be avoided through laser scanning, two running modes are realizedto adapt to different terrains, and the energy is saved.

The present invention is a front-opening wafer box with an elliptical latch structure, which includes a box body with a plurality of slots inside the box body for accommodating a plurality of wafers, and an opening formed on one side of the box body for multiple A wafer input and output, and a door body, has an outer surface and an inner surface, the inner surface of the door body is combined with the opening of the box body, and is used to protect a plurality of wafers placed inside the box body, the door body At least one latch structure is arranged inside the protruding platform on the surface, which includes an elliptical cam and a braking part. The guiding structure at the center, and a narrow and long elastic piece framed on the guiding structure, the pair of fitting parts are embedded in the chute, so that a pair of sliding devices are embedded on the elliptical cam, and the rotation of the elliptical cam is controlled to make The sliding device travels between the socket and the latch hole.

The invention discloses an electronic map system for displaying water quality information and a display method of the electronic map system. The system comprises an APP client or PC client side which is equipped with an electronic map subsystem and is in bidirectional communication and connection with a water quality monitoring terminal through a remote water quality monitoring server. The display method comprises steps of establishing wireless communication and connection between the APP client or PC client side and the water quality monitoring terminal, obtaining the water quality monitoring terminal with one-to-one mapping to a monitored water area through coordinates of the monitored water area, obtaining water quality monitoring information, performing judgment and comparison on the water quality monitoring server, and displaying the water quality monitoring information of a certain water area on an electronic map display interface at the APP client or PC client side. The system presents the water quality information in an electronic map, and has the functions of automatic positioning and water quality search and query, thereby providing convenience for a user to know water quality conditions of tap water in a local area and a concerned area in real time.

The invention discloses a fire monitor with a positioning function. The fire monitor comprises a fire monitor body, a driving device, a PLC controller, a monitoring device arranged on the fire monitorbody, an A / D analogue-digital converter, a data transmission device, a sensor and an intelligent positioning device connected to the sensor, wherein an infrared night vision micro camera is arrangedin the monitoring device; the sensor comprises an infrared sensor, a pressure sensor for adjusting the water pressure of the fire monitor, a displacement sensor arranged on a fire monitor column substrate and a tilt angle sensor arranged at the head of the fire monitor, the displacement sensor is hinged to the fire monitor column, and the tilt angle sensor is hinged to the head of the fire monitor. According to the fire monitor disclosed by the invention, the accuracy and intelligence of the fire monitor are improved greatly, dependence on firemen is reduced, and the fire extinguishing efficiency of the fire monitor is improved.

A two-chamber double-layer support structure integrating positioning and centring functions mainly aims to solve problems such as low production power of wafer equipment and large friction coefficients between wafers and support structures. The invention provides the two-chamber double-layer support structure integrating the positioning and centring functions. The support structure has a high-level double-layer wafer support and a low-level double-layer wafer support. The high-level double-layer wafer support is provided with a wafer support high-level first layer and a wafer support high-level second layer. The low-level double-layer wafer support is provided with a wafer support low-level first layer and a wafer support low-level second layer. The two-chamber double-layer support structure of the invention is simple and reliable in structure, convenient to install, low in manufacturing cost, has an automatic positioning function and improves the product yield.

The invention discloses an unmanned aerial vehicle navigator with an anti-vibration function, and belongs to the technical field of unmanned aerial vehicle navigation.The side face of a navigator shell is provided with axially-symmetrical mounting plates, the surfaces of the mounting plates are provided with radially-symmetrical counterbores, a mounting groove is formed in the navigator shell, andlimiting grooves are formed in the inner walls of the periphery of the mounting groove; through grooves are formed in the bottoms of the mounting grooves, fixing plates are slidably connected into the mounting grooves, and symmetrical sliding blocks are fixedly connected to the two ends of each fixing plate correspondingly, according to the unmanned aerial vehicle navigator with the anti-vibration function, the damping springs and the limiting sleeves are arranged, so that the fixing plate has buffering and damping effects in the vertical direction, therefore, the navigator body installed onthe surface of the fixing plate has the anti-vibration function, the cover plate, the limiting sleeve and the fixing plate have the function of rapid manual disassembly and assembly, the assembly efficiency of the navigator is improved, and meanwhile overhauling and maintenance of the navigator in the later period are facilitated.

The invention relates to the technical field of sensors, and discloses sensor tin soldering equipment capable of automatically and accurately positioning an optical filter. The sensor tin soldering equipment comprises a main body and a metal frame, a tin soldering pipe is movably connected to the right end of the metal frame, and a supporting rod is movably installed at the center of a pulling piece. According to the sensor tin soldering equipment capable of automatically and accurately positioning the optical filter, center rods can be pushed to synchronously move when a fastening seat moves towards the middle, the center rods gradually move towards the middle along matched notches in acting rods, the acting rods extrude buffer springs to generate certain deformation, the front side and the rear side are limited and blocked to a certain extent, and the situation that the equipment waggles to influence the accuracy is prevented; and through cooperative use of mounting frames, sliding blocks, bases, rubber blocks and stabilizing pieces, insertion strips interact with teeth on receiving seats, so that the equipment has an automatic positioning function, the optimal position is found, and the use number of sensors is reduced.

The invention provides a prostate self-service massager. The problems that the conventional prostate massager does not have fixed direction and body position and the average size cannot be regulated are solved. The prostate self-service massager comprises a fixing component, a first regulating rod, a second regulating rod and a massage ball, wherein the fixing component comprises a first lantern ring and a rod-like part, one end of the first regulating rod is connected with the rod-like part through threads, and the other end of the first regulating rod is an operating end driving the first regulating rod to regulate the position in the horizontal direction; one end of the second regulating rod is arranged on the first regulating rod in a sleeving way, one massage ball is fixed at the end part of the other end of the second regulating rod, the second regulating rod is tilted forwards, and the massage ball can be attached to the rectum wall of a prostate part when the second regulating rod is inserted into the rectum. The massager has an automatic positioning function, has a self-service massage function after being worn, is suitable for a user to wear by self, and has great whole massage effect.

The invention belongs to the technical field of fire fighting equipment, in particular relates to fire safety clothing with an automatic positioning function. The fire safety clothing comprises a safety belt, a battery compartment and a positioning communication module, wherein the safety belt is arranged on the fire safety clothing; the battery compartment and the positioning communication module are arranged on the safety belt; the positioning communication module is provided with an information receiving module and an information sending module; the information receiving module is electrically connected with a single-chip microcomputer; the single-chip microcomputer is electrically connected with the information sending module; the battery compartment is electrically connected with the positioning communication module and is used for supplying electric energy to the information receiving module, the information sending module and the single-chip microcomputer during work. The fire safety clothing with the fire fighting equipment, disclosed by the invention, is capable of automatically receiving related position information in a communication network and sending the related position information, and is capable of automatically communicating with a communication control center network.

The invention discloses a multi-layer purification device capable of intelligently positioning and releasing a carbon source in water. The multi-layer purification device comprises a stand column, a first motor is installed at the top end of the stand column, the first motor is connected with a column screw, the lower portion of the column screw is connected with a circular tray, and the circular tray can move up and down along the stand column; a rotatable large gear and a small circular cylinder are installed on the circular tray, a plurality of umbrella ribs are installed on the small cylinder and hinged to a hoop through folding rods, the hoop is arranged on small connecting rods in a sleeving mode, the small connecting rods are installed on the small circular cylinder, and in all the small connecting rods, two symmetrically-arranged small connecting rods are connected with a second motor. The small connecting rod is provided with threads, a nut is fixedly installed in the hoop, and the small connecting rod is matched with the nut. According to the invention, a platform capable of intelligently positioning and putting a carbon source is arranged at the middle lower part, and a plurality of layers of floatable plant platforms are also arranged in an oxygen-enriched area at the upper part of the facultative pond, so that emergent aquatic plants and submerged plants can be planted to further improve the removal efficiency of pollutants.

The invention relates to an electromagnetic ultrasonic non-contact automatic detector for welding seams of bottom plates of storage tanks. The detector comprises a body, a non-destructive detecting mechanism, a cleaning mechanism, a positioning structure, a control mechanism, a visual monitoring structure and a data processor, wherein driving wheels are arranged at two sides of the body; a pan / tilt camera and a laser radar of the positioning mechanism are arranged at the front end of the top of the body; a camera of the visual monitoring structure is arranged at the bottom of the body; doubleguide rails are also arranged at the bottom of the body; an electromagnetic ultrasonic probe of the non-destructive detecting mechanism is arranged at the lower end of a probe landing gear; the probelanding gear is arranged on a vertical lifting mechanism; the vertical lifting mechanism is fixed on a first right-angle sliding table; the first right-angle sliding table is slidably connected with the double guide rails; a cleaning fan of the cleaning mechanism is arranged through a second right-angle sliding table; the second right-angle sliding table is slidably connected with the double guiderails; and a cleaning brush and the electromagnetic ultrasonic probe are arranged front and back along the double guide rails. By means of the detector disclosed by the invention, after being cleanedby the cleaning brush, a welding seam can be detected by the electromagnetic ultrasonic probe; and the non-contact detection can be realized.

The invention discloses a travelling crane system with an automatic positioning function. The travelling crane system comprises a central control component and a travelling crane component, wherein the travelling crane component comprises two guide rails, a cross beam is arranged between the two guide rails, a hoisting assembly is arranged on the lower end face of the cross beam, movable assemblies are correspondingly arranged between the cross beam and the hoisting assembly and between the cross beam and the guide rails, the central control component comprises a central console, a signal receiver and a positioning assembly, the central console is arranged at any position of a workshop, and the central console is in wireless connection with the signal receiver. In the travelling crane system with the automatic positioning function, remote control can be realized through the signal receiver, moreover, the position of the cross beam and the position of a base plate are accurately positioned through wireless ranging base stations, then the full-automatic control is realized under the cooperation of the movable assemblies and a lifting unit, and the practicability of the travelling crane system is greatly improved. The travelling crane system is reasonable in design and suitable for popularization and use.

The invention relates to a cutting machine provided with an automatic positioning function and used for clothing processing. The cutting machine provided with an automatic positioning function and used for clothing processing comprises a rack, a guide frame, a supporting frame, a movable guide shaft, a cloth pulling mechanism and a cutting mechanism, wherein one end of the rack is provided with the guide frame; one side of the guide frame is provided with the supporting frame; a regulating hole is formed in the supporting frame; a connecting sleeve is arranged inside the regulating hole; the connecting sleeve is mutually connected to the regulating hole; a movable guide shaft and a fixed guide shaft are mounted on the supporting frame; the movable guide shaft and the connecting sleeve aremutually connected; and a movable slot is formed in one side of the guide rail. The cutting machine provided with the automatic positioning function and used for clothing processing disclosed by the invention can perform continuous cutting treatment on cloth, can regulate cutting length of the cloth, is suitable for clothing of different specifications, can regulate cloth tightening degree, and isalso suitable for cloth of different thicknesses.

The invention discloses an electronic door lock of a door with an automatic positioning function. The electronic door lock comprises a spring bolt and a control device; and the spring bolt can be automatically acted under the control of the control device. The electronic door lock further comprises a positioning piece connected with the control device; and the positioning piece can be automatically acted under the control of the control device, so that a door body of the door is located in a positioning state or a free state, and the positioning and positioning relief operations of the door body are more convenient. In addition, as the positioning relief of the door body is realized through the control device in the electronic door lock, when the door body is located in the positioning state, the accidental injury of children caused by positioning relief of the door body due to wrong operations or such external force as wind power is prevented, and the safety of the door is improved. The invention further discloses the door with the automatic positioning function.

An insulating paperboard tensile strength test fixture belongs to the technical field of transformer insulating part production and comprises two groups of supports and two groups of chucks, wherein the chucks are mounted on the supports, and the supports are mounted on a tensile machine. The support comprises a main table, a guide rod, a limiting boss, a guide lug, a connecting rod and a threaded hole, wherein the main table is of a main connecting structure of the support, the guide rod is arranged on the rear side of the main table, the limiting boss is arranged on the guide rod, and the guide lug is arranged at the other end, opposite to the guide rod, of the rear side of the main table; the connecting rod is arranged on the main table in the same extending direction as the guide rod; the chucks are installed on the connecting rods, and the threaded holes are formed in one sides of the connecting rods. Each chuck is composed of two symmetrical clamping plates, wherein the two clamping plates are installed in a staggered mode to form the chuck; each clamping plate comprises a clamping body, a shaft barrel, a semi-conical hole and a conical rod, wherein the shaft barrel is arranged in the middle of the clamping body and installed on the connecting rod, the semi-conical hole is formed in the bottom of the clamping body, the conical rod comprises a conical head and a screw rod, the screw rod is installed in threaded hole, and the conical head is sleeved in the semi-conical hole.