89results about How to "Easy switch control" patented technology

A force feedback interface having isotonic and isometric control capability coupled to a host computer that displays a graphical environment such as a GUI. The interface includes a user manipulatable physical object movable in physical space, such as a mouse or puck. A sensor detects the object's movement and an actuator applies output force on the physical object. A mode selector selects isotonic and isometric control modes of the interface from an input device such as a physical button or from an interaction between graphical objects. Isotonic mode provides input to the host computer based on a position of the physical object and updates a position of a cursor, and force sensations can be applied to the physical object based on movement of the cursor. Isometric mode provides input to the host computer based on an input force applied by the user to the physical object, where the input force is determined from a sensed deviation of the physical object in space. The input force opposes an output force applied by the actuator and is used to control a function of an application program, such as scrolling a document or panning or zooming a displayed view. An overlay force, such as a jolt or vibration, can be added to the output force in isometric mode to indicate an event or condition in the graphical environment.

A method of operating a resonant power converter(1, 2), having a high side switch(3) and a low side switch(4), is disclosed in which the switching is controlled to allow for improved operation at low power levels. The method involved an interruption to the part of the switching cycle in which the low side switch (4) is normally closed, by opening the switch at a particular moment in the cycle which allows the energy to be store in the resonance capacitor (5). Since, as a result, the energy is largely not resonating but stored in a single component, the time quantization of the mode of operation is significantly reduced or eliminated.

The invention discloses a method and device for controlling adaptive optimization switching for a heterogeneous converged wireless network. The method comprises the following steps: selecting a sensitivity control mode; periodically monitoring network state information of a user terminal and processing the network state information of the user terminal; confirming the current scene of the user terminal according to the processed network state information of the user terminal; confirming a sensitivity parameter value of the user terminal according to the current scene of the user terminal; performing a normalizing operation on all alternative network attributes of the user terminal according to the confirmed sensitivity parameter value; confirming a score of each alternative network by adopting a multi-attribute decision strategy according to a result of the normalizing operation; sorting on the basis of the scores; and confirming a target network, to which a mobile terminal is switched, according to a sorting result and a judging system. According to the method, the ping-pong vertical switching caused in a moving process of the user terminal during is reduced and the user experience for service quality is promoted.

The invention discloses an indoor intelligent water and electricity controller and a control method of the indoor intelligent water and electricity controller. The indoor intelligent water and electricity controller comprises a master control chip (1), an infrared sensor (2), a counter (3) and an alternate current contact switch (4), wherein the infrared sensor (2), the counter (3) and the alternate current contact switch are all electrically connected with the master control chip (1), and the infrared sensor (2) comprises two pairs of infrared transmission receivers. The indoor intelligent water and electricity controller can identify whether a human body enters or leaves a room and can count the number of persons entering inside the room, the controller can effectively judges whether the person is in the room so as to control electric devices and a power supply in the room intelligently, the degree of intelligence and the practicality of the controller are respectively high and strong, and the accurate counting and controlling also guarantee the quite high reliability of the product.

A handover control method and apparatus are provided to efficiently buffer packets in a Mobile Worldwide Interoperability for Microwave Access (WIMAX) network. A serving radio access station (S-RAS) and an access control router (ACR) divide and buffer packets to be sent to a mobile station before and after a predetermined message exchange process. The Access control router (ACR) sequentially tunnels a packet buffered in the serving radio access station (S-RAS) and a packet buffered in the Access control router (ACR) into a target radio access station (T-RAS) when a handover for the mobile station is completed. Since an unnecessary buffering operation is not performed in the Access control router (ACR) and the radio access station (RAS), a resource waste may be avoided.

The invention discloses a switching control system of a computer. The switching control system is characterized in that the switching control system comprises an attendance card unit and a switching control unit, wherein the attendance card unit is used for storing every piece of access control authentication information, identity identification information of every personnel user and corresponding relation therebetween in advance, timely reading the identity identification (ID) information of the corresponding personnel user when reading every piece of the access control authentication information, recording the reading time of the access control authentication information in a real-time manner and then sending to the switching control unit; and the switching control unit is connected with the attendance card unit and at least one computer of the personnel user. The switching control system of the computer, disclosed by the invention, can respectively correspondingly send an opening control command and a closing control command to the user computer when the user performs the operation of swiping a card on an attendance machine during the processes of going to and from work, correspondingly automatically control the opening and the closing of the user computer, further enable the user to conveniently perform switching control on the computer, save electric energy, prolong the service life of the computer and avoid potential safety hazard.

The invention discloses a room temperature control ventilating system. The room temperature control ventilating system comprises an indoor box body mounted in an indoor space, and an outdoor box bodymounted in an outdoor space; a filtering structure is arranged on the position, close to an air inlet connector, of an inner cavity of the indoor box body, and an indoor heat exchanger is mounted between the filtering structure and the air feeding connector; an outdoor heat exchanger is mounted in an inner cavity of the outdoor box body, and a first heat exchanging medium pipeline and a second heat exchanging medium pipeline are arranged on a heat exchanging medium connector between the outdoor heat exchanger and the indoor heat exchanger in a connected mode to constitute a circulating heat exchanging system; and the room temperature control ventilating system is characterized in that the indoor heat exchanger comprises a first indoor heat exchanger body and a second indoor heat exchangerbody which are arranged in a spaced mode and can be switched to achieve four operating modes, and the indoor heat exchanger further comprises a control system. The various ventilating temperature control modes can be provided and can be subjected to switching control conveniently according to needs, and the ventilating function and the user experience are improved.

The invention discloses a household intelligent controller and a control method thereof. The household intelligent controller comprises a master control chip (1), an infrared sensor (2), a counter (3), a timer (12) and an alternating-current touch switch (4), wherein the infrared sensor (2), the counter (3), the timer (12) and the alternating-current touch switch are electrically connected with the master control chip (1), and the infrared sensor (2) is two pairs of infrared transmission receivers. The controller also comprises a light sensor (13), and the light sensor (13) is electrically connected with the master control chip (1). The household intelligent controller can effectively judge whether people exist in a room or not, and the intelligent control over indoor electrical equipment or power supplies is realized. The intelligent degree is high, the practicality is strong, and the reliability of the controller is very high through accurate count and control. In addition, with the arrangement of the timer and the light sensor, the regulation flexibility of the controller is increased, and the controller is more intelligent and energy-saving. The on and off of the power supplies within a certain time is realized.

The invention discloses a waterless and environment-friendly manure collection toilet storing urine and shit separately. A bottom box is arranged; containers for storing urine and shit are arranged in the box; a box door is arranged on one side of the box, defecating and urinating openings and covers are arranged on an upper plate of the bottom box; a urine collection funnel is arranged below the urinating opening; an exhaust pipe and an exhaust fan are arranged at the upper part of a side plate of the bottom box; an upper surrounding plate and a switch door are arranged above the bottom box; steps are arranged beside the bottom box below the switch door; a ventilation fan is arranged at the upper part of the upper surrounding plate; peripheries of box plates and the door of the bottom box are sealed, and peripheries of the covers of the defecating and urinating openings are also sealed; sealing covers controlled by switches are arranged at upper ports of the containers for storing urine and shit, and the covers of the defecating and urinating openings are sealing covers controlled by switches; a front pedal indicating platform, a rear pedal indicating platform and a pedal switch are arranged on the upper plate of the bottom box; and plastic bags are arranged in the containers for storing urine and shit, and a seat support and a disinfecting deodorant sprayer are also arranged on the upper plate of the bottom box. The waterless and environment-friendly manure collection toilet is suitable for construction sites, country areas, water-deficient areas and even water-deficient cities, the structure is simple and complete, the use is convenient, the cost is low, and functions of saving water, protecting environment and collecting manure are particularly prominent.

The invention discloses a fuzzy intelligent switch device and a fuzzy intelligent speed change control method applied to a range hood. The fuzzy intelligent switch device comprises a fuzzy controller, an ionic smoke sensor, a current regulator, a speed change regulator, a warning module, a power inverter and a PMU power management unit; the power inverter is connected with the fuzzy controller, the warning module, the current regulator, the speed change regulator and the ionic smoke sensor through the PMU power management unit; the ionic smoke sensor is used for sensing smoke, transforming the information into a voltage value and sending to the fuzzy controller; the fuzzy controller is used for driving the current regulator to control the current in a circuit; the speed change regulator is used for changing the power of a motor of the range hood to realize intelligent speed regulation; and the warning module runs automatically when the smoke concentration is too high. The device disclosed by the invention can realize intelligent speed regulation of the range hood in environments different in smoke concentration, can also realize safety alarming and reminding when the smoke concentration is relatively high, can prevent human body injuries caused by high-concentration smoke and inconveniences caused by frequent start and stop of the range hood in daily use, and can also improve the working performances of the range hood.

The invention discloses an evaporation device and method. The evaporation device comprises an evaporation base plate carrier. The evaporation base plate carrier is used for carrying an evaporation base plate. An electromagnetic module is arranged in the position, above the zone where the evaporation base plate is located, of the evaporation base plate carrier and comprises a plurality of electromagnetic units. The multiple electromagnetic units are used for energizing according to a preset sequence. According to the technical scheme provided by the invention, by arranging the multiple electromagnetic units for adsorbing metal masks, the problem that the whole metal masks are adsorbed, and consequently the metal masks are winkled or cannot be released due to winkling can be solved, meanwhile, the adsorption strength and switching can be better controlled through the electromagnetic units, and the position precision of patterns on the evaporation base plate can be improved.

Disclosed is a blade dynamic frequency test apparatus using magnetic excitation. A magnetic exciter is used for applying an excitation force to a rotating blade, a strain gage is used for sensing blade vibration information, a signal transmitter transmits the blade vibration information sensed by the strain gage in real time via radio, and a signal receiver receives the collected blade vibration information in real time via a receiving antenna and transmits the blade vibration information to a multi-channel controller. Multiple input and output channels of a magnetic tape recorder are connected with the multi-channel signal controller and used for storing the blade vibration information of each channel. The multi-channel signal controller selects one- or multi-channel signals for a data analyzer for analyzing blade vibration characteristics. A thermometer, a tachometer and an oscilloscope are used for monitoring the temperature near the signal transmitter, the rotor velocity and signals of different channels in real time respectively. The invention solves the problem that a blade vibration frequency test using gas excitation would cause over temperature of equipment, and the invention is simple in structure, high in safety, low in cost, pollution-free, and capable of meeting blade vibration frequency test requirements.

The invention relates to a vibration water outlet device, which comprises a water outlet body, a water inlet pipe, a water outlet pipe, an electromagnetic valve, a vibration sensor and a power supply control box, wherein one end of the water outlet pipe is connected onto the water outlet body, the other end of the water outlet pipe is connected with a water outlet opening of the electromagnetic valve, a water inlet opening of the electromagnetic valve is connected with one end of the water inlet pipe, the other end of the water inlet pipe is connected with an external connection water source, and the vibration sensor is arranged on the water outlet body and is electrically connected with the electromagnetic valve and the power supply control box. When the water outlet body is flapped, the vibration sensor detects vibration signals and feeds back a signal to the power supply control box, and the power supply control box sends a pulse signal to the electromagnetic valve for discharging water. When the water outlet body is flapped again, the power supply control box sends a reverse pulse signal to the electromagnetic valve for stopping discharging water after receiving vibration signals. The control of the on-off state of the water can be realized through flapping the water outlet body circularly in the way, the trouble for repeatedly switching on or off the water source switch is omitted, the effects of high speed and convenience are realized, and the use of the water outlet device is more intelligent and humanized.

The invention relates to the technical field of composite plate milling, in particular to a metal composite plate surface milling device which comprises a machine tool body. A placing mechanism is mounted on the machine tool body, a protection mechanism is mounted on the placing mechanism, an abutting mechanism is connected to the placing mechanism, and a control mechanism is mounted on the placing mechanism. A discharging mechanism is connected to the placing mechanism, and a reset mechanism is installed on the discharging mechanism. Through cooperation of the placing mechanism and the protection mechanism, a composite plate needing surface milling is conveniently placed and machined, a vacuum pump is prevented from damaging the plate, sliding damage is prevented, the machined plate is conveniently subjected to abutting sliding under the action of the abutting mechanism, a worker can conveniently take the plate, meanwhile, under the action of the control mechanism, switching control over work of the abutting mechanism and work of the placing mechanism is facilitated, under cooperation of the discharging mechanism and the reset mechanism, the machined plate can be rapidly lifted and discharged conveniently, and damage to the hands is reduced.

The invention discloses a urea hydrolyzing ammonia production system and process applied to denitration in a thermal power plant. The urea hydrolyzing ammonia production system comprises a vertical hydrolysis reactor, a steam pipeline, a urea solution filling pipeline and a product gas discharging pipeline; a reactor barrel, a reactor upper end socket and a reactor lower end socket encircles a sealed hydrolysis reaction cavity; a liquid remover is arranged at the upper part of the hydrolysis reaction cavity; a plurality of supersonic steam nozzles are formed in the lower part of the hydrolysis reaction cavity; the supersonic steam nozzles are communicated with a steam inlet. Through the supersonic steam nozzles, a urea solution is directly heated by steam for urea hydrolysis reaction; the urea hydrolyzing ammonia production system is simple in structure and reasonable in design, reduces equipment investment and corrosion risks of a hydrolysis reactor; a urea hydrolyzing ammonia production process is simple in operation, convenient, safe and high in operability.

The invention relates to a remote data management method and system, wherein the method comprises the following steps: S1, detecting whether a backup instruction is input or not, if yes, executing S2; S2, verifying whether input keys of the backup instruction are correct or not, if yes, executing S3 to S6, if not, returning error warning information to an external mobile client requiring backup data; S3, receiving the backup data of the external mobile client / reading the backup data of an external memory card; S4, decrypting received backup data; S5, encrypting the received backup data; S6, storing encrypted backup data. By using the method, users can backup data in mobile devices to improve easy operation and safety of data management for the mobile devices without requiring to use data lines and dedicated applications on computers or some related equipment any more.

The invention discloses an intelligent cabin integrated control system and method. The system comprises an atmosphere lamp, a control unit, a signal detection unit and a user interaction unit, wherein the control unit is used for receiving external or internal signals, analyzing the external or internal signals into a control instruction for controlling the atmosphere lamp, and controlling the brightness, the color and the light emitting state of the atmosphere lamp, the external signals comprise a sound signal, a vehicle speed signal, an environment detection signal and a user gesture sensing signal, the internal signal comprise a user-defined control signal, the user interaction unit is used for switching the control modes of the control unit on the atmosphere lamp, and the control unit receives corresponding signals to control the atmosphere lamp in different control modes. According to the system, multiple control modes are integrated, the state of the atmosphere lamp can be controlled in different control modes according to selection of a user, switching control among the control modes is convenient, and diversified performance requirements of the user can be met.

The invention discloses an information processing method and an electronic device. The information processing method is applied to an electronic device which comprises a touch display unit; the method comprises the steps of obtaining a first sliding operation on the surface of the touch display unit by virtue of detection, determining whether the first sliding operation is a sliding operation of sliding from the first edge of the touch display unit to the second edge of the same adjacent to the first edge and obtaining a first determination result, and when the first determination result indicates that the first sliding operation is the sliding operation of sliding from the first edge of the touch display unit to the second edge of the same adjacent to the first edge, generating and executing a first instruction, wherein the first instruction is used for displaying a current running application of the electronic device.

Provided is a novel walking aid for a bone and joint patient. Rotating sleeves rotationally sleeve the upper portion of a foreleg, a lower separation and reunion plate sleeving the foreleg is coaxially fixed to the rotating sleeves, an upper separation and reunion plate located above a lower separation and reunion device vertically slidingly sleeves the foreleg, a first connecting rod is fixed between the two rotating sleeves, a control rod located below a transverse rod and downwards inclining towards a rear leg is fixedly installed on a control shaft, a sliding frame is slidingly connected with the transverse rod, a control rack fixedly connected with the sliding frame is meshed with a control gear, a connecting gear is rotationally connected with a gear rack, a connecting rack fixedly connected with the upper separation and reunion plate is meshed with the connecting gear, and a middle rod is arranged between the connecting gear and the sliding frame. When the walking aid interactively walks and a patient feels uncoordinated in walking with the walking aid on the body, by loosening the control rod, the positions of two supports can be relatively fixed, and the use safety and reliability of the patient are ensured; when a seat plate is unfolded, the locking of a walking wheel can be realized, and the safety of the patient is ensured.

The invention discloses a noise echo elimination device based on a video conference. The noise echo elimination device comprises multiple microphone modules which are connected with a microphone switch module through a CAN bus. Each microphone module is connected with an audio vibration module and a voice detection module. The voice detection modules detect voice information of the microphone modules and transmit the voice information to a SIP control center. The audio vibration modules detect audio vibration information of the microphone modules and transmit the audio vibration information to the SIP control center. The SIP control center receives the voice information of the voice detection module to be compared with a database and detects whether the voice information content includes preset voice X and transmits a microphone turn-off instruction to the microphone switch module if the voice information content includes the preset voice X. The microphone switch module receives the instruction and turns off the corresponding microphone module. The vibration information transmitted by the audio vibration modules is continuously received and a microphone turn-on instruction is transmitted to the microphone switch module. The microphone switch module receives the turn-on instruction and turns on the corresponding microphone module.

The invention discloses a table lamp. The table lamp comprises a lamp base part and a lampshade part; a rotating part is arranged on the lamp base part; the lampshade part is provided with an elastic buckle matched with the rotating part; the rotating part is spherical; the length of the elastic buckle is larger than the radius of the rotating part; the rotating part is spherical, so that the lamp base part and the lampshade part can rotate freely relative to each other; the table lamp can be adjusted to a proper angle through the rotating part, so that users are convenient to use; and the rotating part and the elastic buckle are matched, and the elastic buckle well fixes and clamps the rotating part, so that the rotation operation is more convenient.

A micro motor with a good heat dissipation effect disclosed by the present invention comprises a base, and further comprises adjusting and fixing mechanisms, damping and supporting mechanisms, a heat dissipation mechanism, a linkage mechanism and a cleaning mechanism, the adjusting and fixing mechanisms are arranged on two sides of the inner wall of the base, and the damping and supporting mechanisms are fixedly mounted at the tops of the damping and supporting mechanisms; a motor is fixedly installed on the inner side of the damping supporting mechanism, a bottom opening and closing mechanism is arranged on one side of the motor, and the heat dissipation mechanism is fixedly installed on the inner side of the base. According to the invention, through the arrangement of the bottom opening and closing mechanism, the heat dissipation mechanism and the linkage mechanism, the heat dissipation net is pushed to drive the movable hook to be in contact with the two sides of the movable block, and the two sides of the movable hook are folded inwards through continuous pushing until the movable block and the movable hook rebound, so that the movable block 51 and the movable hook 52 are connected and fixed; therefore, the heat dissipation net is fixedly installed on one side of the bottom of the motor, high temperature in the motor can be discharged more conveniently, and damage to the motor caused by long-time high temperature is avoided.

The invention discloses an integrated injection device. The integrated injection device comprises an injection pipe (3), a liquid inlet assembly and an air inlet assembly, and a liquid absorbing pipe(1) is installed at the front end of the injection pipe (3). The integrated injection device is characterized in that the interior of the injection pipe (3) is divided into a liquid absorbing cavity (4) and an air cavity (7) through a partition plate (6), and the liquid inlet assembly and the air inlet assembly are installed at the front portion and the rear portion of the side face of the injection pipe (3) respectively; the air inlet assembly comprises a plug A (8) and an air pipe (10), the plug A (8) is in detachable cooperation with an air hole (9) in the side wall of the injection pipe (3), the top of the air pipe (10) is connected with the plug A (8), a pressure regulating box (12) is installed at the tail of the air pipe (10), and the air hole (9) is communicated with the air cavity(7); the liquid inlet assembly comprises a mounting base (17) and a plug B (20), and a special-shaped cavity (18) is formed in the mounting base (17). The integrated injection device is convenient tooperate, saves time and labor, and is simple in structure, efficient, reliable, suitable for being popularized and applied for integrated injection of liquid absorbing and injecting.

The invention belongs to the technical field of medical waste treatment, and particularly discloses a blood sample temporary storage device for an inpatient area. The blood sample temporary storage device comprises a temporary storage cylinder, wherein a sample temporary storage mechanism and a temporary storage control mechanism matched with the sample temporary storage mechanism are arranged in the temporary storage cylinder; a movement supporting mechanism is arranged on the bottom surface of the temporary storage cylinder; a temporary storage cover is arranged at the top end of the temporary storage cylinder, a temporary storage top surface is arranged at the top end of the temporary storage cover, a sample temporary storage opening is formed in the temporary storage top surface, and an automatic switch structure is arranged on the sample temporary storage opening; and a sample outlet matched with the temporary storage mechanism is formed in the temporary storage cylinder. According to the blood sample temporary storage device, by arranging the sample temporary storage mechanism and the temporary storage control mechanism in the temporary storage cylinder, collection and intelligent pretreatment actions of blood samples are achieved, centralized treatment and temporary storage of vacuum blood collection tubes are facilitated, the collection time of the vacuum blood collection tubes is effectively shortened, the time of contact with the vacuum blood collection tubes during manual operation is shortened, the collected vacuum blood collection tubes can be accurately recorded and counted, and the probability of losing the vacuum blood collection tubes is reduced.

The invention relates to the technical field of cable braking, and discloses a magnetorheological cable drive braking system and a control method thereof. The magnetorheological cable drive braking system comprises a base, a controller, a motor and a braking mechanism; the brake mechanism comprises a case, and a movable piece, a reciprocating screw and a guide rod are arranged in an inner cavity of the case; the motor is in driving connection with the reciprocating screw, and the reciprocating screw is coaxially and fixedly connected with a winding drum; a rope is wound on the winding drum; anelectromagnetic coil is wound on the side wall of the case, and the inner cavity of the case is filled with magnetorheological fluid; and the controller is in communication connection with a speed measuring mechanism, and is electrically connected with the electromagnetic coil. According to the magnetorheological cable drive braking system, the movable piece is driven by the reciprocating screw to reciprocate in the case, and when the falling speed is too high, the electromagnetic coil is switched on through the controller to generate a magnetic field, so that the viscosity of magnetorheological fluid is increased, the resistance of the movable piece is increased, and the speeds of the reciprocating screw and the winding drum are quickly reduced until the reciprocating screw and the winding drum stop or are rotated at constant speed; therefore, the loaded cable end stops falling or slides down at constant speed, safe braking of the cable is achieved, and the motor is protected.

The invention relates to the technical field of fireproof doors and windows, in particular to a fireproof aluminum alloy door and window with a sealing structure. The fireproof aluminum alloy door andwindow comprises an aluminum alloy frame body, wherein a left frame body is arranged at the left portion of the inner side of the aluminum alloy frame body, and a right frame body is arranged at theright portion of the inner side of the aluminum alloy frame body; mounting grooves are formed in the inner sides of the left frame body and the right frame body, and left window glass and right windowglass are arranged on the inner sides of the mounting grooves respectively; an in-window connecting frame is arranged in the middle portion of the aluminum alloy frame body, and a window lock is arranged on the outer side of the in-window connecting frame; and a water storage tank is arranged inside the aluminum alloy frame body, a temperature sensor is arranged on the left side of the water storage tank, and water inlet holes are formed in the outer side of the aluminum alloy frame body. Compared with the prior art, the fireproof aluminum alloy door and window with the sealing structure is reasonable in structure, and the fireproof window glass can be automatically crushed conveniently, so that the rescue speed is increased; and the sealing performance is good, so that the fireproof aluminum alloy door and window with the sealing structure is better in using effect and high in practicability.

The invention discloses a poultry feeding apparatus based on PLC control. The apparatus comprises a clean water feeding mechanism and a feed feeding mechanism, wherein the feed feeding mechanism is located on the left side of the clean water feeding mechanism, the clean water feeding mechanism comprises a clean water feeding tank, the rear side of the top of the clean water feeding tank is fixedlyconnected with a vertical plate, the top of the front of the vertical plate is provide with a water tank, the top of the water tank is provide with a water adding port, the bottom of the water tank is fixedly connected with a water adding pipe communicating with the water tank, the bottom end of the water adding pipe penetrates the clean water feeding tank and extends to the inside of the clean water feeding tank, and the feed feeding mechanism comprises a feed feeding tank. The poultry feeding apparatus based on PLC control has a reasonable structure design, is convenient to use, can realizeautomatic feed addition, ensures the uniformity of feed in the feed tank after addition, avoids poultry food-snatching caused by stacked feed somewhere, ensures the normal growth of poultry, and meets all-round use needs.

The invention discloses a left-right turnover mechanism of a nursing bed and a multifunctional electric turnover nursing bed, and belongs to the field of nursing beds. The left-right turnover mechanism comprises an outer frame, a turnover frame and a turnover driving mechanism, wherein the turnover driving mechanism comprises movable carrier rollers, fixed carrier rollers, a movable roller driving assembly and a turnover jacking driver; the turnover frame is arranged in the middle of the outer frame of the nursing bed; the turnover frame is supported on a rotating positioning groove of the outer frame through the movable carrier rollers and the fixed carrier rollers; the movable carrier roller on one side is rotatably connected with the outer frame through the movable roller driving assembly; the movable carrier roller on one side is separated from the outer frame; and the turnover frame is jacked upwards by the turnover jacking driver, so that the turnover frame can turn over around the axis M of the carrier roller on the turnover side. The turnover structure is simple and compact in design, and cannot interfere with functions of back lifting, leg bending and the like of the nursing bed; and the turnover frame in the middle drives a patient to turn over, turnover actions are safe and stable, and the patient can turn over easily and comfortably.