136results about How to "Safe and reliable action" patented technology

The invention relates to a laser cutter that consists of a host worktable device and an adjacent material rack device that can be controlled by a control system. A material rack synchronous lifting mechanism is used for carrying out height lifting on an upper material rack and a lower material rack on a material rack platform; furthermore, the material racks are alternatively sent in a worktable for working by a worktable transmission mechanism; and when a workpiece on one material rack is cut, the other material rack can carry out the feeding and discharging operation, therefore, the production efficiency is improved greatly and the safety of an operator is ensured. An optical fiber laser can run at high speed on a machine tool; the positioning and cutting operation can be realized quickly and exactly by a longitudinal positioning mechanism, a transverse positioning mechanism and a vertical positioning mechanism controlled by a system; and the precision is high and the action is safe and reliable. By adopting the reasonable wind path design, smoke and dust generated during the cutting process can be effectively processed, therefore, the laser cutter is environment-friendly and safe.

The invention discloses an automatic assembly line for feeding, cutting and punching a pipe automatically. The automatic assembly line comprises a front feeding mechanism, a middle feeding and cutting mechanism and an automatic punching and unloading mechanism which are arranged in sequence from left to right; the front feeding mechanism comprises a first supporting frame, a lifting mechanism, a pipe clamping mechanism, a transverse pushing mechanism and a longitudinal pushing mechanism; the middle feeding and cutting mechanism comprises a second supporting frame, a first clamping conveying mechanism, an automatic cutting mechanism and an automatic clamping mechanism; the automatic punching and unloading mechanism comprises a third supporting frame, a second clamping conveying mechanism, a drilling clamping mechanism and two sliding drilling mechanisms which are positioned on the right side of the second clamping conveying mechanism and are arranged at an interval. The automatic assembly line can realize automatic feeding, and is low in labour intensity and high in work efficiency; the pipe can be cut automatically; the cutting quality is good; high-efficiency cutting operation of one or more pipes can be realized synchronously; the punching operation can be performed on the two ends of the pipe simultaneously; the function of clamping a plurality of pipes at one time and punching the pipes in sequence can be realized.

The present invention is one tyre turning mechanism, and belongs to the field of tyre assembling line machinery. The technological scheme of the present invention is that the tyre turning mechanism includes one turning rack hinged on the machine frame, one cylinder hinged below the machine frame, the piston rod of the cylinder hinged to the front end of the turning rack, parallel roller tracks homogeneously set on the turning rack, and limiting cylinder set in the front end on the turning rack. The tyre turning mechanism is used to turn tyre from horizontal state to vertical state for the manipulator to take conveniently in high work efficiency.

The invention relates to an automatic sugar cane peeler for solving the problem of unsafety and low efficiency caused by manpower adopted by an existing sugar cane peeler device. The automatic sugar cane peeler comprises a clamping device and a cutter, and is characterized in that the clamping device is located on a linear guide, the clamping device is provided with a sugar cane porous base, the cutter is composed of a plurality of cambered blades, the cambered blades are arranged on an elastic adjustment device inside the cutter, and the cambered blades are provided with cambered surface for guiding scraps. The automatic sugar cane peeler has the characteristics that the plurality of repeated circular blades are designed to make peel more clean, the cutter can be used for peeling but is not easy to abrade, the peeler can operate only by clamping one side with low labor intensity, the peeler operates in a linear motion with high peeling efficiency, the peeler is suitable for sugar cane with a long fiber shell characteristic and is smooth in peel discharge, the structure of whole device is simple, the motion is safe and reliable and the operation is convenient.

The invention discloses a propelling mechanism which comprises guide rails arranged on a supporting plate, wherein a sliding plate is installed on a guide rail slider through a connecting piece. The propelling mechanism is characterized in that the sliding plate is equipped with a cylinder; the output end of the cylinder is connected with one end of a cylinder connecting plate, while the other end of the cylinder connecting plate is connected with a swing arm; the middle part of the cylinder connecting plate is connected with a rotating shaft arranged on the sliding plate; and a push plate is arranged at the tail end of the swing arm. The propelling mechanism disclosed by the invention has the advantages of stability in operation, safe and reliable action and low noise.

An automatic trigger broken belt capturing device for a belt conveyer comprises a machine frame formed by two machine frame lateral plates, wherein an upper braking mechanism is arranged in the middle of the machine frame, a trigger mechanism and a locking mechanism are arranged in the front of the upper braking mechanism, a torque loading mechanism is arranged behind the upper braking mechanism, a lower braking mechanism is arranged below the upper braking mechanism, an upper braking beam mechanism is arranged above the upper braking mechanism, a lower braking beam is arranged below a lower braking beam, and the whole capturing device is in the to-start state under driving of energy stored by a torsion spring and a compressed spring. Once belt breaking happens, the trigger mechanism and a bearing mechanism act to lead the locking mechanism to be unlocked, the upper braking mechanism and the lower braking mechanism simultaneously act, and an upward belt and a downward belt are respectively braked through the eccentric self-locking principle. The automatic trigger broken belt capturing device is simple in structure, high in capturing success rate, uniform in capturing force, small in impact, economical, reasonable, convenient to maintain and capable of being automatically triggered without being driven by a power source.

The invention belongs to the field of stereo parking devices and particularly relates to a four-column type ascending, descending and horizontal moving two-layer stereo parking device and a use method thereof. The device comprises ground tracks, horizontal moving devices, lifting devices, a second-layer platen, a first-layer platen and a ceiling. The whole parking device is of a four-column supporting bottom traveling structure, horizontal moving is driven through a motor, and ascending and descending are driven through a hydraulic cylinder. The first-layer platen achieves vehicle storing and taking through horizontal moving. The second-layer platen achieves vehicle storing and taking through horizontal moving, ascending and descending. Vehicle obtaining and taking on the first layer and vehicle obtaining and taking on the second layer do not interfere with each other. The device is simple in principle, reliable in structure, convenient to install and high in space utilization rate, the platens do not need to rotate, driving habits and driving directions of vehicle owners do not need to be changed, vehicle storing and taking are convenient, time consumption is small, the device can be used independently and can be combined in a row for use, and use modes are flexible. The device can be used in various environments such as communities, squares, schools and two sides of roads, and environment applicability is high.

The invention relates to a device and a method for controlling cold-rolling steel strip pickling turbulence. In the device, the inlet end of a pressure gauge is connected with a lateral jet acid valveconnected to a main jet acid tube, and the outlet end of the pressure gauge is connected with a lateral jet acid tube; and the lateral jet acid valve and the pressure gauge are connected with an external computer respectively. According to quality of steel strip, the optimal pickling temperature is determined and the relationship between the steel strip speed and the turbulence degree is set; thenumeric conversion and the automatic control are completed by three functional blocks PLI10, ADC and PIC of the computer respectively; by automatically adjusting the lateral jet acid valve and the pressure gauge, the dynamic control of the pickling turbulence degree of the steel strip is realized, the overpickling of the steel strip is avoided, and the surface quality of the cold-rolling plate isimproved; the equipment damage due to the broken band of a rolling mil is reduced, the yield of the cold-rolling plate and the operating rate of the rolling mill are improved, and several million yuan can be saved annually.

The invention relates to a body posture training method. According to the method, after action key frames of a coach and action key frames of a learner are collected, action video data of the coach and action video data of the learner are collected, then a DTW algorithm is used first to make an action video of the coach and an action video of the learner consistent in duration and time sequence, afirst feature plane set based on the action key frames of the coach and a second feature plane set based on the action key frames of the learner are established, and the action key frames of the coach are matched with the action key frames of the learner through comparison of an included angle between normal vectors of the first feature plane set and an included angle between normal vectors of the second feature plane set; and then an included angle between edge vectors in the second feature plane set is acquired through detailed coordinates of body joint points and is compared with an included angle between edge vectors in the first feature plane set, and the action similarity of the learner is confirmed. The method has the advantages that the training and exercise effect of the learneris improved, and actions are safe enough without hidden danger of health; and the learner can obtain enough training experience from one action, so that the training effect of the learner is improved.

The invention provides a high-temperature condensed water recycling and purifying with a ceramic membrane filter. The high-temperature condensed water recycling and purifying with the ceramic membrane filter comprises a concentrating tank, a dual-pump structure, the ceramic membrane filter, a cleaning tank and a water purifying tank; the water outlet of the concentrating tank is connected with the water inlet of the dual-pump structure through a pipeline; the water outlet of the dual-pump structure is connected with the circulating water inlet of the ceramic membrane filter; the circulating water outlet of the ceramic membrane filter is connected with a communicating pipe of the dual-pump structure through a pipeline; the water purifying port of the ceramic membrane filter is connected tothe water purifying tank through a pipeline; the water inlet of the cleaning tank is connected with the water purifying port of the ceramic membrane filter through a three-way pipeline; the cleaning solution outlet of the cleaning tank is connected with the water inlet of the dual-pump structure through a three-way pipe; and the cleaning water returning port of the cleaning tank is connected withthe circulating water inlet of the ceramic membrane filter. The high-temperature condensed water recycling and purifying with the ceramic membrane filter is divided into two processing units so that separation and filtration can be separated; and by continuous concentration of water, a processing device for separating according to the physical characteristics of a medium is provided. The device occupies a small area, has high integration degree and a short construction period, and is easy to install.

The invention relates to a crane hydraulic system for a load sensitive ship, which comprises an electric proportional handle, a PLC main command controller, a control system and a power source, wherein the control system comprises an integrated electric liquid proportional reversing valve, an integrated two-way reducing valve, an integrated pressure stop valve, a load sensitive pilot control valve, a pressure sensor, a balance valve, a secondary overflow valve, a motor variable control valve and a two-stage electric control axial plunger variable motor that are connected through an oil pipeline; the power source comprises a load sensitive valve, an integrated electric control pressure stop valve, an axial plunger variable pump and a one-way valve that are connected through an oil pipeline; the PLC main command controller is respectively connected with the integrated electric liquid proportional reversing valve, the load sensitive pilot control valve, the pressure sensor, the motor variable control valve and the integrated electric control pressure stop valve through electric control signals; and the control system is connected with the power source through an oil pipeline. The invention can not only realize real-time control and higher accuracy, but also has stronger automation and better energy-saving effect.

The invention relates to a package pipe cutting and perforation integral machine, which comprises a machine frame, wherein the top of the machine frame is provided with a work table, the two ends of the work table are respectively provided with second guide rails through fixing elements, slide blocks are sheathed on the second guide rails, a first hole punching mechanism and a second hole punching mechanism are respectively arranged on the slide blocks and are oppositely arranged, a clamping arm device is arranged at one side of the work table and is positioned between the first hole punching mechanism and the second hole punching mechanism, a first guide rail is also arranged at the other side of the work table, a group of first slide blocks are separately sheathed on the first guide rail, and a cutting device is arranged on the first slide blocks. The package pipe cutting and perforation integral machine has the advantages that the work efficiency is high, the work is reliable, the product quality is ensured, and the automatic production is realized.

The invention discloses an intelligent cloth pressing device which comprises a liftable pressure rod vertically arranged on a housing, wherein the lower end of the pressure rod is provided with a presser foot, a working platform is arranged below the presser foot, a control drive mechanism used for controlling the pressure rod to drive the presser foot to lift is arranged between the pressure rodand the housing, the control drive mechanism comprises a pressing part used for controlling the pressure rod to drive the presser foot to descent, and a resetting part used for controlling the pressure rod to drive the presser foot to upwards restore to the original position. The pressure rod is intelligently controlled through attraction between an electromagnet and an attraction body and an elastic element to drive the presser foot to lift in a reciprocating manner, a larger downward pressure is applied to a fabric to be sawn during spurting so that stable spurting is ensured; and when the fabric is sent, the pressure foot is upwards lifted under the action of the elastic element so that the fabric is ensured to be smoothly sent, thus the intelligent cloth pressing device is safety and reliability in action, and is suitable for popularization and use on a sewing machine.

The invention provides an arm frame position control device, comprising a distance measuring unit, a controller and a multi-path solenoid-operated valve group, wherein the distance measuring unit is used for acquiring the distance between an arm frame and a barrier in the vicinity of the arm frame and transmitting the acquired distance signal to the controller; the controller is connected to the multi-path solenoid-operated valve group and used for judging whether the distance between the arm frame and the barrier is less than or equal to a preset safety distance according to the distance signal, and transmitting a current adjustment signal to the multi-path solenoid-operated valve group when the distance between the arm frame and the barrier is less than or equal to the preset safety distance; and the multi-path solenoid-operated valve group is used for controlling the hydraulic oil amount of the oil cylinder of the corresponding arm frame according to the current adjustment signal so as to adjust the position of the arm frame and enable the distance between the arm frame and the barrier to be more than the preset safety distance. Through the technical scheme provided by the invention, the tail end position of the arm frame can be automatically adjusted into a safety range for construction, so that the safety and reliability for the actions of the arm frame are ensured.

The invention provides a stitching instrument. The stitching instrument comprises a locking mechanism of a firing handle. A first bump is arranged on a firing lock sheet of the locking mechanism and used for dividing a part uncovered with the first bump on the firing lock sheet into a first part and a second part; and the first part and the second part form a barrier-free channel. According to the stitching instrument, the structure of the locking mechanism of the coking handle is changed, particularly the structure of the firing lock sheet is changed, the bump on the firing lock sheet does not block downward sliding of a locking part, and the barrier-free channel in the firing lock sheet enables the locking part to smoothly slide out of the firing lock sheet, so that the risk that the locking part cannot slide out of the firing lock sheet in the prior art is avoided.

The invention relates to a notebook computer lifting platform comprising a base, a power mechanism, a horizontal drive component, a lifting drive component, a power supply component and a support platen used for placing a notebook computer, wherein the power mechanism, the horizontal drive component, the lifting drive component and the power supply component are arranged on the base; the power mechanism comprises a motor; the power mechanism and the horizontal drive component are in drive connection with each other; the horizontal drive component and the lifting drive component are in drive connection with each other; the supporting platen and the lifting drive component are in drive connection with each other; and the power supply component is electrically connected with the motor of the power mechanism. When the notebook computer lifting platform is in use, the horizontal drive component converts the rotation power output of the motor of the power mechanism into horizontal linear motion, the lifting drive component is driven by the horizontal drive component so as to ensure that the rear part of the support platen to move up forwards and the front part of the support platen move down forwards, so that the display screen of the notebook computer forms appropriate height of lift and realizes larger forward lead amount, and a keyboard keeps a reasonable inclination angle and a lower front edge height all the time.

Provided is a mop with the profile shape, wherein the cloth is arranged on the subface of the main body, cleaning with the mop rod at the middle part of the case, characterized by including: a host case with an open end formed on the case and the upper and lower case yoking with one another; a rotor plate shaft coupling at the open end of the host case and realizing the locking or cancelling the action through pushing the button; a slider moving forward and backward through the rotation of the rotor plate and the coil shape spring supported by the host case; an inside / outside lock located in the front / back of the host case for grasping the front / back end of the mop through separating or clinging each other; a pair of front / back push rod combined with the front / back outside lock mounted on the slider side of the host case at an intervals; and a rotation link rod making a pair of the front / back push rod act simultaneously combining with the front / back push rod at a definite distance.

The invention belongs to the technical field of deep-sea life sampling, and particularly relates to a life sampling device. A net launching type large aquatic life sampler comprises a triggering mechanism, a launching mechanism, a net storage device and a sampler shell. According to the technical scheme, the triggering mechanism is installed at the bottom of a barrel body (22) of the sampler shell through a base body (23) of the triggering mechanism, a pushing shaft (5) is located inside the barrel body (22), the top of the pushing shaft (5) is hinged to a pushing rod (9) corresponding to a spear (12) in the launching mechanism, the pushing rod (9) is connected with a sliding block (18), and the sliding block (18) moves in a sliding groove (25) and is connected with a safety pin (10) at the bottom of the spear (12) in the launching mechanism. The launching mechanism is installed on the conical top surface of the barrel body (22) through a launching pipe (14) of the launching mechanism, the net storage device is installed in the center of the conical top surface of the barrel body (22), and a fishing net (15) in the net storage device is connected with the spear (12) through a net wire. According to the net launching type large aquatic life sampler, only the mechanical structure is adopted, and motion is safe and reliable.

The invention relates to a clamping piece lifting mechanism which is characterized in that a lifting device is arranged on a machine frame; and a clamping piece lifting platform is arranged on the lifting device. When in use, a bag clamping subassembly is relatively moved under the pulling of a synchronous belt, and finally a plurality of paper diapers on a bag conveying plate can be clamped; the conveying plate is raised through a cylinder; when the paper diapers are pushed to separate from the bag conveying plate through a pushing device, the cylinder is started to lower down to restore the bag conveying plate to an initial position for waiting for the next action. The whole mechanism is stable in running and safe and reliable in acting; the number of the diapers to be bagged can be adjusted; and the clamping piece lifting mechanism can meet various requirements on bagged diapers.

The invention relates to a push-type switch. According the technical scheme of the invention, the push-type switch is characterized by comprising a base, a bracket, a static contact, a dynamic contact, a swinging piece, a button and an operation panel, wherein one end of the operation panel is hinged on the bracket; the bracket is buckled on the base; the static contact is fixedly arranged on the base; one end of the dynamic contact is pressed against a conducting sheet of the base, and the other end of the dynamic contact is pressed against the swinging piece through a dynamic contact spring; the button is movably arranged on the bracket; a reset spring is arranged between the button and the bracket; one side of the button which is positioned on the swinging piece is provided with a slippage mechanism; and leftward and rightward swinging of the swinging piece is realized by matching the slippage mechanism and the swinging piece, so that the dynamic contact is driven to swing leftwards and rightwards, and matching of switch-on and switch-off of the dynamic contact and the static contact is realized. Due to the adoption of the technical scheme disclosed by the invention, the defects existing in the prior art are overcome and a novel push-type switch which has the advantages of simple and reasonable structure and long service life is provided.

The invention discloses a DQN-based real-time optimization method for material delivery in an uncertain workshop environment, and the method comprises the following steps: modeling the uncertain workshop environment, and building a material demand dynamic time window equation and a real-time path resistance coefficient equation; converting a material distribution real-time decision optimization problem in an uncertain workshop environment into a semi-Markov decision problem, and designing key model elements such as a state space, a global action space, a local action space and a reward function; designing two Q networks of the DQN by using a full-connection neural network; wherein the DQN continuously interacts with the environment to carry out trial and error learning until Q value network training is stable; transmitting workshop key state data sensed in real time and disturbance data obtained by calculation of the environment model to the DQN which is stably trained; wherein the DQN calculates the optimal safety action in the current state, and transmits the optimal safety action to the AGV to guide the AGV to respond to disturbance in real time in an uncertain workshop environment and make proper action selection, so that a material distribution task is quickly completed at relatively low cost.

The invention provides an automatic feeding device of a wheel body type workpiece machine tool. The automatic feeding device comprises a conveying platform guide rail and a supporting part of the conveying platform guide rail, the supporting part enables the conveying platform to be in a slant working state, a material loading station and a machining station are downwards arranged in the slant direction of the conveying platform guide rail, linkage control supports are arranged in the two stations, and each linkage control support is formed by a shifting rod set rotation middle shaft, a location rod set rotation middle shaft, a shifting rod, a location rod and a driving power part. According to the technical scheme, the structural arrangement of the conveying platform guide rail with a certain slant angle and the linkage control supports of the material loading station and the machining station of the conveying platform guide rail are adopted, therefore, machined workpieces with the cylindrical outer surface, the approximate cylindrical outer surface, circumferential outer surface and the like can be moved to the material loading station by themselves, or moved from the material loading station to the machining station or moved out from the machining station, and the automatic feeding device is suitable for machining and moving of the machined workpieces in large size and quantity. The automatic feeding device is simple in mechanism composition, and can be matched with the continuous machining rhythm of the machine tool to work.

The invention relates to a spare power automatic switching device, in particular to an intelligent intertripping load spare power automatic switching device, and belongs to the technical field of power system relay protection. According to the technical scheme, the intelligent intertripping load spare power automatic switching device comprises a first voltage transformer, a second voltage transformer, a first current transformer and a second current transformer, wherein the first voltage transformer is used for collecting the voltage of a first 10 KV bus section, the second voltage transformer is used for collecting the voltage of a second 10 KV bus section, the first current transformer is used for collecting the current of an outgoing line connected to the first 10 KV bus section, and the second current transformer is used for collecting the current of an outgoing line connected to the second 10 KV bus section; the first voltage transformer, the second voltage transformer, the first current transformer and the second current transformer are all connected with a load spare power automatic switching device body. The intelligent intertripping load spare power automatic switching device is compact in structure and convenient to operate, can collect transformer loads and outgoing line loads in real time, can guarantee the safe and reliable spare power automatic switching movement, and can guarantee continuous power supply and power supply safety of a user.

The invention discloses a metal oxide arrester which is used for protecting an alternating current electrified railway traction power supply system, is provided with an air gap, and comprises a cross arm and an arrester body, wherein the cross arm is fixed on a pole tower shoulder support, and the arrester body is suspended and fixed on the cross arm; in addition, the arrester also comprises a high voltage electrode and a low voltage electrode, wherein the low voltage electrode is assembled at the lower end of the arrester body and is firmly electrically connected with the arrester body, the high voltage electrode is assembled on a line lead and is firmly electrically connected with the line lead, and an air gap is formed between the high voltage electrode and the low voltage electrode. When overvoltage happens to lighting, the arrester can reliably act; after the lightning passes, the arrester easily restores insulation, has good stability, basically needs no maintenance and can be used on a 27.5kV electrified railway F line suspension insulator to effectively prevent the problem of line break of a traction power supply system due to lightning strike.

The invention discloses a hydraulic driving device for a thickener. The hydraulic driving device for the thickener comprises a driving device formed by a power source, a speed reducer and an output shaft, wherein the power source is connected with the speed reducer. The hydraulic driving device for the thickener is further provided with a hydraulic lifting device formed by a hydraulic oil cylinder and a guiding shaft, the hydraulic oil cylinder and the guiding shaft are connected through a piston rod, the hydraulic oil cylinder is arranged above a connecting plate, and the guiding shaft is arranged below the connecting plate. An advanced and reliable electrohydraulic combined control system is adopted, pressure of a hydraulic system serves as control signals, the hydraulic driving device for the thickener can automatically lift a rake according to the resistance which a rake arm is subjected to, signal detection is comprehensive and accurate, motions are safe and reliable, and rake pressing is avoided.

The invention discloses a small hydraulic buffer impact test method and device, and the method comprises the following steps: first, a small hydraulic buffer is vertically fixedly arranged, a buffer rod is vertically upward, an impact load and the hydraulic buffer are arranged on a same vertical line, and the impact load is arranged on a set height above the hydraulic buffer; the impact load freely falls onto the hydraulic buffer for drop-hammer impact; a plurality of different buffer state images in the buffer process of the hydraulic buffer can be obtained by use of a high-speed camera; and finally, the number of the shot images in the buffer process can be obtained by analytic statistics by use of dichotomy, and the buffer time of the hydraulic buffer can be obtained by dividing the number of the shot images by shooting frame rate of the high-speed camera. Through measuring the buffer time of the small hydraulic buffer for further obtaining the mechanical system actuation time, the buffer property of the hydraulic buffer can be judged, the method is simple, and test results are accurate.

The invention relates to a clamp mechanism for a steel plate conveying trolley in a steel plate edge-milling device. A swing arm is connected with a frame body by adopting a first pin shaft; a pressure plate is fixedly mounted at two ends of the fin shaft by using bolts; a copper sleeve is mounted in a shaft hole of the swing arm; one end of a swing hydraulic cylinder is connected to the swing arm by using a second pin shaft, and the other end of the swing hydraulic cylinder is connected with the frame body by using a fifth pin shaft; the middle part of a clamp body is connected with the swing arm by using a third pin shaft; a pin shaft for clamping the middle part of the hydraulic cylinder is mounted on the swing arm by using an oil cylinder mounting seat, and the other end of the hydraulic cylinder is connected with the end part of the clamp by using a forth pin shaft; an upper clamp opening is connected with the clamp body by using bolts, and a lower clamp opening is connected with the swing arm by using bolts. The invention has simple, compact and reasonable structure, safe and reliable action and low manufacture cost, and is suitable for clamping of steel plates in the steel plate edge-milling device.

The invention relates to a solar energy charging system of an electric automobile and a control method. The solar energy charging system comprises a solar energy battery panel, a solar energy charging DC / DC (direct current-direct current) converter (usually referred to as DC / DC for shot), a high-voltage relay I, a high-voltage relay II, a power batter, a battery management system (usually referred to as BMS for short), an instrument and a remote monitoring terminal. The solar energy charging system is not only capable of charging the electric automobile, but also capable of guaranteeing driving performance of the electric automobile since operation of the solar energy charging system is more convenient and fast and safer in operation. According to the control method, remaining capacity of the power battery is monitored by the battery management system (BMS), charging can only be started when the remaining capacity is less than 50%, a charging manner of 'random charging during use' is avoided from influencing the driving performance of the electric automobile to the greatest extent, and time for a normal driving state of the electric automobile is prolonged.

The invention relates to an alarm control method for a crossing section. A device comprising a detection circuit and a control circuit is adopted. When a train gets close to magnetic steel, an alarm is given, the train occupies a crossing, a track relay is demagnetized, a continuous alarm circuit composed of the track relay, a first diode and a continuous alarm power terminal is switched on, and then the alarm is kept; meanwhile, an excitation power source of a reverse track relay is switched on to make the reverse track relay act to be attracted, and an RC circuit is charged at the same time; when the train travels out of the crossing, an alarm removing circuit composed of the track relay, the reverse track relay and an alarm removing terminal is switched on, an impulse voltage is sent out at a moment by means of immediate excitation of the track relay and slow release of the reverse track relay, and the alarm initiated by the corresponding magnetic steel is removed. Through the alarm control method, the problem that when the train runs in the occupied crossing section, an alarm is interrupted in advance and consequently a lifting rod of a keurboom machine is started can be solved.

The invention belongs to the technical field of plate processing, and particularly relates to an improved plate turnover machine with a rapid turnover function. According to the improved plate turnover machine, through arrangement of a rotating shaft, a rotating plate, a motor pressing unit and an elastic plate unit on a driving motor, the purposes that plates are turned over quickly and stably, and are not prone to collide and damage are achieved. The improved plate turnover machine has the advantages that a rotating structure for plate turnover is reasonable and effective, and the plate clamping type rotating turnover action is safe and reliable; the plate is not prone to damage, and a plate pushing feeding and discharging structure is simple and efficient; the mode that an elastic plate unit is pressed to store energy firstly and then assists in pushing out the plate is flexible and ingenious, and the overall plate feeding and discharging structure is rapid, labor-saving, stable and accurate; and the whole turning plate structure is stable and compact, flexible, adjustable, energy-saving and economical.