91results about How to "Solve the fall" patented technology

The invention relates to a biaxial orientation plastic tube manufacturing method and an apparatus. The manufacturing method is characterized in that a plastic tube raw material is prepared to a plastic tube through a plastic tubing extruder, the plastic tube is heated to a high elastic state, the pipe segment in the high elastic state is performed with axial direction stretching and orientation by a tractor, and then the pipe segment in the high elastic state is performed with radial expansion. An orientation method of the radial expansion is characterized in that a taper expanding head is built in the pipe segment in the high elastic state, the pipe segment in the high elastic state of the taper expanding head can be used for realizing the circumferential orientation, the expanded pipe segment is cooled and sized to obtain the biaxial orientation tube. The manufacturing method and the apparatus can realize the stretching orientation at axial direction and circumferential direction on the plastic tubing, the mechanical properties of the plastic tube are increased, the method is simple, the manufacturing method and the apparatus can be directly used on a plastic tube production line, and are easy to be industrialized.

The invention relates to switching power supply technology and discloses a switching power control system and a method thereof. The system comprises a preset duty ratio adjustment circuit used for comparing a voltage feedback signal and a current feedback signal with a received reference voltage signal or reference current signal, determining whether outputs a mode switching signal or not, and outputting a control logic signal to a power switch drive circuit according to a received mode switching signal. Since the control logic signal outputted by the preset duty ratio adjustment circuit can be a control logic signal with a higher conduction duty ratio directly, when load current is increased instantaneously, the control logic signal outputted by the preset duty ratio adjustment circuit can be directly outputted to the power switch drive circuit without waiting for that a PWM control circuit is adjusted from a low conduction duty ratio to a high conduction duty ratio slowly, thus actual output voltage of a switching power supply is raised rapidly, transient response of a load is improved, and influence on normal work of electronic equipment is avoided.

The invention relates to an improved adaptive droop control method for parallel inverters in a low-voltage microgrid. The method includes the following steps that: virtual complex impedance is introduced, so that the equivalent output impedance of the parallel inverters can be inductive, and a droop control equation can be obtained; linear function terms of power and droop coefficients are introduced to replace droop coefficients in the droop control equation, so that an adaptive droop control equation can be obtained; and voltage drop caused by the extraction of the virtual complex impedance is considered, so that an improved adaptive droop control equation is obtained. Improved adaptive droop control on the parallel inverters is realized through the improved adaptive droop control method. Compared with the prior art, the improved adaptive droop control method of the invention has the advantages of quick dynamic response and high stability, and can realize a compromise between the load sharing and output voltage quality of the parallel inverters.

The invention provides a hub sand core and a low-pressure casting hub die. The hub sand core comprises a sand core body (1), a tapered protrusion (11) is arranged at one end of the sand core body (1), a blind hole (12) is reserved at the other end of the sand core body (1), and an annular boss (13) is arranged at one end, with the blind hole (12), of the sand core body (1). In the technical scheme of the hub sand core, the sand core body is no longer of a through hole structure, the top of the sand core body is designed into the shape of the top of a distributing cone, an original distributing cone top is replaced by a shaped conical protrusion of the sand core to realize distribution of molten aluminum; the distributing cone no longer directly contacts with the molten aluminum, even if small amount of molten aluminum permeating through a matching surface of the distributing cone and the sand core body can flow to the bottom of a conical hole of the sand core body, so that a venting plug is prevented from being blocked, producing efficiency is improved, and die preparation cost is lowered.

The invention relates to a retaining device for effectively preventing a lifting platform from falling. The retaining device comprises a brake block and an overspeed trigger device, wherein a wedge block is arranged and is mutually wedged with the brake block through a wedging surface with a slope; a pressing plate is connected to the brake block, and a steel wire rope is connected to the wedge block. The goods handled by the traditional stacker are large-scale materials with the carrying capacity more than 300kg, the structure size of the stacker body is relatively huge, and safety brake is carried out by adopting a way of a brake guide rail clamped and welded on a stand column. Small articles handled by an e-commerce industry are more, and most of stackers are light-weight high-speed products. The stand column is a thin plate, and the brake guide rail cannot be welded. The retaining device is arranged on the lifting platform, and the wedge block rubs against the stand column of the thin-plate stacker to generate braking force so that the purpose of lifting platform retaining is achieved. The retaining device solves the falling problem of the lifting platform of the thin-plate stacker and can effectively retain the lifting platform, so that the stacker is more reliable and safer.

The embodiment of the invention discloses a falling prevention method for a device and a terminal device. The method is applied to the terminal device with a back pressure sensor. The method comprisesthe steps of detecting a back stress area of the terminal device through utilization of the back pressure sensor when the terminal device is in a vibration reminding state; and adjusting vibration amplitude of the terminal device according to the back stress area of the terminal device. Through adoption of the embodiment of the invention, the falling prevention problem of the device can be solvedreliably, and a device falling probability can be reduced.

The invention discloses a pair of VR (virtual reality) glasses. The glasses comprise a glasses frame, two screens and two lenses, wherein the two screens and the two lenses are arranged on the glasses frame; an electric push rod used for preventing the falling of a conventional shortsighted glasses or presbyopic glasses when the VR glasses are picked off is arranged on the glasses frame, and comprises a case, a driving motor and a push rod; the case is fixedly connected with the glasses frame; the driving motor is arranged in the case; the push rod is connected with the driving motor; the push rod is in a cylindrical shape; a concave pit is dug in a gap position of the two lenses on the glasses frame; the case is fixed in the concave pit position; a dismountable end sleeve is arranged on the end part of the push rod in a sleeving way, and comprises a round sleeve sleeving the end part of the push rod and a transverse rod used for extruding the nose of the conventional shortsighted glasses or presbyopic glasses; the transverse rod is fixedly connected with the round sleeve; the round sleeve is provided with a cylindrical inner cavity; the end part of the push rod is nested in the inner cavity; the transverse rod is in a cylindrical shape; the axial line of the transverse rod is vertical to the axial line of the cylindrical inner cavity. The VR glasses provided by the invention solves the problem that when the VR glasses are picked off, the VR glasses push the conventional glasses, so that the conventional glasses fall onto the ground and are damaged.

The invention relates to the technical field of direct current networking operation control, in particular to a storage battery charge state equalization control method based on an adaptive regulation factor, and the method comprises the following steps: utilizing communication between a local charge state of a storage battery and a charge state of a storage battery directly adjacent to the local charge state of the storage battery, and adopting a consistency algorithm to calculate and obtain an average value of all storage batteries; the droop coefficient and the current of the output end of the DC / DC converter are multiplied to be transmitted to a double-closed-loop control layer; summing the ideal voltage of the bus output voltage, the difference value I and the power compensation value, and subtracting the summed sum from the voltage of the droop unit and the bus to obtain a difference value II; performing voltage and current control on the difference value II to obtain a control signal I; the control signal I is modulated through the pulse width modulation technology, stable output voltage is achieved, the charge states of a plurality of storage batteries are balanced, a control signal II is generated, three SoC balance adjustment factors are introduced in the method, the convergence speed of the SoC is increased, and the problem that later-period balance of a traditional SoC is slow is solved.

The embodiment of the invention discloses a piece of information processing equipment which comprises an acquisition unit, a judgment unit and a processing unit, wherein the acquisition unit is used to obtain first information about a user's holding of a terminal when the user's holding of the terminal is detected; the judgment unit is used to judge whether the first information about the user's holding of the terminal satisfies a preset condition for safe holding; and the processing unit is used to send prompt information to the user if the first information about the user's holding of the terminal does not satisfy the preset condition for the safe holding, and thus the user can alter the first information according to the prompt information so as to make the first information satisfy the preset condition for the safe holding, wherein the prompt information is used to prompt the user that the current manner used to hold the terminal is unsafe. The embodiment of the invention also discloses an information processing method.

The invention provides a lead screw elevator. The elevator comprises an elevator car and a lifting device, wherein the lifting device comprises a motor, a nut and a lead screw; the motor comprises a revolving shaft; the revolving shaft comprises an axial through hole; the nut is fixed in the axial through hole; a perforative axial threaded hole is arranged in the nut; an external thread is arranged on the outer wall of the lead screw; the axial threaded hole of the nut is matched and meshed with the external thread of the lead screw; the lead screw penetrates through the axial through hole; the elevator comprises a fuse nut as well; the fuse nut is fixedly and coaxially connected with the revolving shaft; the fuse nut comprises a perforative axial threaded hole; the fuse nut and the nut all comprise internal threads; the inner diameter of the internal thread of the fuse nut is smaller than the inner diameter of the internal thread of the nut and is smaller than the outer diameter of the external thread of the lead screw. Compared with the prior art, the lead screw elevator guarantees the safety of passengers or cargo in the elevator car and improves the safety standard of the lead screw elevator by adding the fuse nut.

The invention relates to a spiral direct jacking safety lifting elevator. The spiral direct jacking safety lifting elevator comprises an elevator support guide rail frame, and an elevator car sliding up and down along the elevator support guide rail frame; an elevator shaft is surrounded by the elevator support guide rail frame; multiple limiting sensors are distributed on the elevator support guide rail frame in the height direction of the elevator support guide rail frame; and the bottom of the elevator car is connected with a spiral lifter for urging lifting of the elevator car and fixed on the bottom ground of the elevator shaft. The spiral direct jacking safety lifting elevator further comprises a controller for connecting with the limiting sensors to control operation of the spiral lifter. The spiral direct jacking safety lifting elevator is reasonable in structural design and compact in space, simplifies the elevator structure, adopts the spiral lifter to supply the lifting force from the bottom of the elevator car to effectively solve the elevator car falling problem, adopts a spring flat belt and a tooth-shaped spring bar to spirally engage to form a spiral cylinder to realize lifting, solves the technical difficulty of larger space size occupied by a traditional lifting mechanism, and is higher in stability.

A building construction hoisting device, which mainly includes a motor, a second transmission box and an emergency brake pedal, drives two winding reels correspondingly connected to the transmission box to rotate through the same transmission shaft, and the two winding reels carry out the same lift on the same lifting frame Fixed, which solves the problem of building materials falling directly after a single winding reel fails, greatly improving the safety performance, and an emergency brake pedal is set on the side of the winding reel, through the equal spacing on the emergency brake pedal The stop pawl brakes the winding reel to achieve rapid braking and facilitate operation. At the same time, a tensioning device is installed on the wire rope to adjust the tension of the wire rope, which greatly improves the efficiency of lifting building materials.

The invention discloses an electric connector which comprises carrier connecting devices and lateral slide support damping devices. Each carrier connecting device comprises first supports, a first damper, a carrier and connecting pieces which are arranged in a wind power tower. Each lateral slide support damping device comprises a plurality of second supports, at least one second damper, a supporting plate, a plurality of clasping pieces and a plurality of slide positioning pieces. The slide positioning pieces are fixed to the outsides of paired insulating tube buses, the clasping pieces are arranged on the outsides of the slide positioning pieces, the slide positioning pieces and the clasping pieces can slide relatively, the clasping pieces are fixed onto the supporting plates, and the second dampers are arranged between the supporting plates and the second supports. The electric connector has the advantages that electric energy can be downwardly transmitted from wind-driven power generators via the carrier connecting devices, and problems of dropping of existing insulating tube buses and damage to outer insulators of the existing insulating tube buses can be solved; the lateral slide support damping devices are flexibly connected with the carrier connecting devices, so that the problem that the existing insulating tube buses are expanded with heat and contracted with cold can be solved.

The invention discloses a handling method for preventing a stair cleaning robot from falling off and collision during moving on a step. A robot car body is equipped with a distance measurement sensor, a proximity sensor and a contact-type sensor, wherein the proximity sensor at the front part inclines downward to detect whether the robot is shielded or judging whether the front of the driving direction of the robot is empty or not, so as to prevent the robot from falling off from two ends of the step; when the robot turns round on the step, the proximity sensor is used for judging whether a position below is empty or not, so as to prevent the rear wheel of the universal wheel of the robot from missing one step from the current step and prevent the robot from dropping off; the distance measurement sensor ensures that one side of the robot is basically parallel to the raking riser of an upper step and positioned around the safe distance X; the contact-type sensor detects whether the front of the robot is in contact with a barrier or not through a contact plate, is used for judging whether the front of the robot in the walking direction runs into a wall or a guard rail and handling correctly. The handling method provided by the invention can effectively solve the problems of falling off and collision of the stair cleaning robot, the method is reliable, and the universality is high.

The invention relates to an earth switch interlocking mechanism and a switch cabinet. The earth switch interlocking mechanism comprises a first crank arm connected with an isolation switch operation shaft, and a second crank arm connected with an earth switch operation shaft. The first crank arm and the second crank arm are movably connected through a connecting element. A first connecting part connected with the first crank arm and a second connecting part connected with the second crank arm are set on the connecting element. At least one of the first connecting part and the second connectingpart is equipped with a connecting long waist hole which is movably connected with the corresponding crank arm, thereby enabling the connecting element to adapt to actions of the first crank arm andthe second crank arm. The connecting long waist hole is equipped with a limiting wall which is in stop matching with the corresponding crank arm, thereby limiting the action of the second crank arm when an isolation switch is located at a switch-on position. The problem that in the prior art, an earth switch falls off due to damage of an earth crank arm or a pull rod is solved.

The invention belongs to the field of electrochemical batteries and particularly relates to an electrochemical battery. The electrochemical battery comprises a naked battery core, an outer package and an electrolyte, wherein the outer package is made of a soft material and comprises a main body package part, a naked battery core bagging packaging edge and a degassing packaging edge; an adhesive layer is arranged between the naked battery core and the outer package; the naked battery core and the outer package are adhered together after the adhesive layer is heated or / and pressed; in a region between the edge of one side, close to the degassing packaging edge, of the adhesive layer and the degassing packaging edge, the number of layers of a naked battery core assembly is greater than that of the naked battery core assembly in an adhesive layer coverage region; the thickness of the excessive naked battery core assembly is h1; and h1 is greater than or equal to 4 microns. According to the battery disclosed by the invention, h1 is greater than or equal to 4 microns; a 'barrier wall' of which the height is not less than 4 microns can be built between the adhesive layer and the degassing packaging edge; and glue of the adhesive layer is effectively prevented from diffusing to the degassing packaging edge, so that the problem of the packaging reliability of the battery is solved.

An automatic sealingautomatic closing garbage bag stand comprises a base and two adjustable struts connected with the base, wherein folding push-open rods are arranged at the tail ends of the adjustable struts and connected with the adjustable struts by pin shafts. The pin shafts are horizontal, and the pairwise push-open rods can be folded to 180 degrees. The base consists of a fixed base and a movable base that can move relatively, and fixing nuts are arranged at a connecting part between the fixed base and the movable base. The two adjustable struts are arranged on the fixed base and the movable base respectively, and movable ends of the adjustable struts are connected with fixed ends by fixing nuts. The automatic sealingautomatic closing garbage bag stand adopts the two pairs of movable push-open rods which can serve as a push-open structure of a garbage bag after unfolded, the push-open rods are foldable, when the garbage bag is taken out, the push-open rods can be folded automatically only by kneading the two sides of a bag mouth, then the bag can be drawn out, and the garbage bag stand has the advantage of convenience in use.

The invention relates to the technical field of a casting machine cooling mechanical arm, and discloses a casting machine cooling mechanical arm with a motion track memory function, which includes brackets, fixing plates, a horizontal driving mechanism, an overturning mechanism, a receiving plate and a clamping rod; lifting pillars are arranged at the top ends of the four bracket; the two fixing plates are respectively and fixedly mounted at the top parts of the four lifting pillars on the left side and the right side; the horizontal driving mechanism is fixedly mounted at the top parts of thetwo fixing plates; a vibration damping plate is arranged at the top surface of each fixing plate, and is clamped at the inner top of the cavity of the corresponding fixing plate; a vibration dampingpiece and a rubber plate are fixedly mounted at the bottom of each vibration damping plate; each vibration damping piece consists of a limiting spring, an arc block, a damping spring and a roller. The casting machine cooling mechanical arm with the motion track memory function realizes that vibration caused by operation of the horizontal driving mechanism is completely buffered and reduced underthe combined action of the vibration damping plates and the vibration damping piece, and solves the problem of unstable object clamping of the bottom caused by operation vibration of the horizontal driving mechanism.

The invention relates to a desktop robot control circuit. A detection module is added to acquire distance data in front of a robot in real time, the distance data is compared with preset distance databy a control module, so that whether the front of a desktop robot is a desktop edge is judged, the running state of the desktop robot is controlled, damage to the desktop robot due to falling of thedesktop robot from the desktop edge is avoided, and the problem that the desktop robot falls from the desktop due to failure to detect the desktop edge in the traditional technical scheme is solved.

The invention discloses a tobacco clamp and a tobacco clamping method, and relates to the technical field of tobacco parching. The tobacco clamp comprises a fixing rod and a tobacco clamping rod, both ends of the fixing rod are detachably connected with both ends of the tobacco clamping rod respectively, a row of steel needles are arranged on the tobacco clamping rod in the axial direction of the tobacco clamping rod, the steel needles are perpendicular to the tobacco clamping rod, an elastic part is arranged on each steel needle, and the heights of the elastic parts are smaller than those of the steel needles; in the process of tobacco clamping, tobacco leaves of the same number are clamped by each tobacco clamp with a hemp rope binding method, the same positions of petiole bases are clamped, and the clamping force is evenly distributed on the whole tobacco clamping rod by means of the resilience force of the elastic parts, so that each tobacco leaf is stably fixed to the position between the fixing rod and the tobacco clamping rod, the problem that in the prior art, by means of a comb tobacco clamp, tobacco leaf falling is likely to occur in the tobacco parching process due to a small tobacco clamping amount is solved, the technical problems that by means of the comb tobacco clamp, smoothness and stiffness are likely to occur due to an excessive tobacco clamping amount or an extremely low fixing position are solved, and the tobacco leaf quality and the tobacco parching efficiency are effectively improved.

A high-voltage ceramic capacitor which includes a capacitor element, at least one metal terminal, and at least one solder joint portion. The capacitor element has electrodes on opposing surfaces of a ceramic porcelain. The metal terminal has one end surface facing one surface of the electrode. The solder joint portion is interposed between one end surface of the metal terminal and one surface of the electrode, and solders both surfaces. The solder constituting the solder joint portion does not contain lead but inorganic particles having a melting point higher than a solder melting point.

The invention discloses a crucible sampling device, comprising a horizontal movement mechanism and a vertical movement mechanism, the top of the sampling rod (9) on the vertical movement mechanism is provided with a positioning device (21) for clamping the crucible (3) . In the present invention, a positioning device for clamping the crucible is arranged on the top of the sampling rod to position the crucible, the structure is extremely simple, and the displacement and drop of the crucible caused by factors such as shaking during movement are effectively solved. With similar positioning, the crucible is not affected by factors such as manufacturing tolerances. The crucible is not affected by other external forces, which prevents the damage and other influences caused by external forces on the crucible. It avoids the disadvantages of complicated mechanism and bulky size, reduces the difficulty and cost of design, further reduces the source of failure, reduces the failure rate, and improves the reliability and stability of the overall operation.

The invention relates to the field of a building fastener, in particular to a step-by-step tightening-type template limiting fastener. The limiting fastener comprises a slide supporting sleeve which is sleeved on a scaffold steel pipe, wherein a locking groove which is sunken towards the radial periphery is arranged in the supporting sleeve, the locking groove is a through groove which runs from front to rear, the supporting sleeve is also provided with a side wing which is protruded towards the circumferential periphery and used for jacking a template, and the limiting fastener also comprises an expansion block which is tightly wedged in the locking groove and locks the supporting sleeve on the scaffold steel pipe. When the step-by-step tightening-type template limiting fastener is in use, the supporting sleeve can be sleeved on the corresponding scaffold steel pipe, so that the side wing is enabled to be contacted with the corresponding template through sliding, when the limiting fastener reaches a set position, the supporting sleeve is locked onto the steel pipe by knocking the expansion block, so that the template can be tightened and fixed; and since the supporting sleeve is directly sleeved on the scaffold steel pipe, the supporting sleeve is absolutely free from dropping off under the loosening situation and is free from being lost, and the problem that the existing step-by-step tightening device is easy to drop and lose can be solved.

The invention relates to a spare tire lifter. A lifting mechanism is arranged in an inner cavity of the spare tire lifter, and is provided with a first rotating shaft; the first rotating shaft comprises a first part with larger external diameter and a second part with smaller external diameter; a turntable sleeves the first part; a notch is formed in the second part for containing a boss on the turntable; a traction part of which one end extends out of the shell is wound on the turntable; a first self-locking mechanism comprises an annular groove fixedly formed in the shell and an annular elastic piece arranged in the annular groove; the annular elastic piece is provided with a circumferential opening; the second part is inserted in the annular elastic piece; the annular elastic piece is respectively provided with lugs convexly extending towards the annular inside at the two end parts in the circumferential direction; the lugs are arranged in the notch through clearance fit and are respectively positioned on the two sides of the boss in the circumferential direction. The spare tire lifter provided by the invention has the advantage that a spare tire can be locked through the first self-locking mechanism when a power source suddenly disappears.

The invention relates to the technical field of windows and doors, and discloses an anti-falling automatic cleaning window frame. The anti-falling automatic cleaning window frame comprises a window and a window frame below the window, and is characterized in that the window is fixedly connected with a pulley shaft, the pulley shaft is rotatably connected with a pulley, the pulley rolls on the window frame, and a sliding block capable of sliding is arranged in the window frame; and the sliding block can limit the upward movement of the pulley through a movable wheel, the sliding block is fixedly connected with a cleaning wheel shaft, and the cleaning wheel shaft is provided with an open hole. According to the anti-falling automatic cleaning window frame, the automatic locking sliding block is arranged, window rolling wheels can be automatically locked and limited when the window is installed, the rolling wheels are prevented from being separated from sliding rails, and therefore the window is prevented from being separated from the window frame; and meanwhile, cleaning rollers and an inflating device are arranged, and foreign matters on the inner side of the window frame can be cleared and blown away when the window is pulled, so that the window is pushed and pulled smoothly, and the risk that the window is separated from the window frame is reduced.

The invention discloses improved nanocrystalline ribbon preparation equipment which comprises a moving device and a cooling roller device mounted on the moving device. The moving device comprises a cooling roller base, a precision sliding guide rail and a lead screw device. The cooling roller base is horizontally arranged under the cooling roller device. The precision sliding guide rail is mounted on the cooling roller base. The lead screw device comprises a lead screw, lead screw bearing pedestals and a lead screw nut. The lead screw bearing pedestals are fixed to the two ends of the cooling roller base. The lead screw is horizontally fixed to the lead screw bearing pedestals. The cooling roller device comprises a cooling roller body and a winding wheel device mounted on the cooling roller body. According to the improved nanocrystalline ribbon preparation equipment, a fixed positioning winding station is changed into a variable winding station, the center of a winding wheel can be adjusted to the corresponding cooling roller ribbon discharging station no matter where the cooling roller ribbon discharging station is located, so that the problem of falling off of a ribbon reel during ribbon discharging hoisting is solved.

The invention discloses a thin cast-in-place concrete thin plastering component and a construction process thereof, which comprise the steps: 1 a concrete structure layer is made; 2 coating of interface agent: an interface agent layer is formed on the concrete structure layer cy coating the interface agent after the concrete structure layer is stabilized; 3 coating of anti-crack mortar: a 3-5mm anti-crack mortar layer is coated on the interface agent; and 4 coating of surface layer: a surface layer is coated on the anti-crack mortar layer. The thin cast-in-place concrete thin plastering component and the construction process thereof have the beneficial effects that the thin cast-in-place concrete thin plastering component and the construction process thereof use a novel construction process of interface agent and anti-crack mortar, form a thin plastering construction technology, improve use ratio of indoor space, are one third of a common plastering thickness in plastering thickness, reduces engineering cost, meet the demands of four conversations and one environment protection, improve verticality and flatness of a plastering surface, and effectively prevent hollow imperfection from happening, thereby improving project quality, and effectively solving the problem that mortar drops during the plastering process because of too large self weight during the construction process.

The invention provides a perfusion structure of a transformer, comprising a magnetic core and a housing, wherein the magnetic core is mounted in the housing; the magnetic core is coated with a silica gel layer; and an epoxy layer is perfused between the silica gel layer and the housing. The perfusion structure of the transformer well solves the problem that inductance value of the transformer drops after perfusion by means of the mutual characteristics of the magnetic core, the silica gel and the epoxy layer; and therefore, the perfusion efficiency and yield are improved, the product cost is decreased and the product volume is reduced.