225results about How to "Achieve interlock" patented technology

The invention provides a super-capacitor energy storage and transfer-based active equalization system and method for a lithium battery pack. The active equalization system comprises an equalization main controller, a switch array, a two-way DC / DC, a super-capacitor, a current detection and power calculation device, a 16-bit decoder and a drive circuit, wherein the equalization main controller obtains a single battery voltage inspection value as an equalization state basis and any to-be-equalized battery is gated by the switch array to be connected to an equalization bus; the preceding stage of the full-bridge two-way DC / DC with an adjustable ratio is connected with the equalization bus and the backward stage is connected with the super-capacitor; the power of the equalization loss is calculated through the current detection and power calculation device; the equalization main controller achieves charging for the super-capacitor by a high-power battery through the two-way DC / DC; and the super-capacitor stores the power and then discharges a low-power battery through the two-way DC / DC until the equalization state. The power is stored and transferred through the super-capacitor; active equalization for the lithium battery pack is achieved; and the super-capacitor energy storage and transfer-based active equalization system has an important significance for prolonging of the lifetime of the lithium battery pack.

The invention discloses an anti-theft lock integrating the functions of asynchronous interlocking, electromechanical interlocking, warning and invisibility. An asynchronous lock spring is arranged in an asynchronous bearing hole and abuts against an asynchronous lock head in an asynchronous lock hole, and a push rod is arranged behind the asynchronous lock head; an invisible key or an invisible connection is hidden in an invisible hole, a fixed contact is arranged on a lock body, a rotating contact is arranged on a rotary surface of a rear lock cylinder or arranged behind the rear lock cylinder, a main contact is arranged at the front end of the rear lock cylinder, and an auxiliary contact is arranged at the rear end of a front lock cylinder; the front lock cylinder is completely disconnected from the rear lock cylinder, the rear lock cylinder is locked through the asynchronous lock head, a power supply contact and the rotating contact are connected into a power supply circuit of an electromagnet, an electronic remote control device interrupts the power supply circuit of the electromagnet, and the main contact and the auxiliary contact are connected into a power supply circuit of an asynchronous warning system. The rear lock cylinder and a connection tongue cannot be rotated if a specifically-matched key is not used for unlocking. The anti-theft lock integrates the functions of asynchronous interlocking, electromechanical interlocking, invisibility, self locking and asynchronous warning and is high in safety index.

The invention discloses a three-station isolating switch which comprises a rack, disconnecting links, fixed contacts, grounding contacts and an operating mechanism. The rack is connected with a rotating shaft in a pivotal mode, and the rotating shaft drives the disconnecting links to rotate through first connecting levers and insulating pull rods. The operating mechanism comprises a shell, the shell is connected with a first operating shaft and a second operating shaft in a pivotal mode, and the first operating shaft is fixedly connected with the rotating shaft. The first operating shaft is fixedly connected with a first gear and an isolating limiting plate. The isolating limiting plate is provided with a first positioning hinge pin in a penetrating mode, and the two ends of the first position hinge pin are connected with the first operating shaft through two tension springs. The shell is provided with a switching-on groove, a switching-off groove and grounding grooves which are matched with the first positioning hinge pin. The second operating shaft is fixedly connected with a second gear and a connecting lever, wherein the connecting lever is connected with the shell through a second positioning hinge pin and a compression spring. The shell is provided with a second arc hole which is matched with the second positioning hinge pin. The second gear is not matched with the first gear in a switching-on state and a switching-off state and is matched with the first gear in a grounding state. The three-station isolating switch is compact in structure, reliable in action and convenient to maintain.

The invention discloses a concealed and embedded assembly, which comprises a lower main body, an embedded box and a water test piece, wherein the lower main body is provided with a cold water inlet flow passage, a hot water inlet flow passage, a mixed water flow passage and at least one water outlet flow passage, and the cold water inlet flow passage, the hot water inlet flow passage, the mixed water flow passage and the water outlet flow passage are respectively provided with an inlet and an outlet; the embedded box comprises a box body and a fixed frame which is used for holding the box body, and a cold water hole, a hot water hole and at least one water outlet are formed in the side wall of the box body; the bottom surface of the water test piece is provided with a first passage and a second passage; the lower main body is held in the box body; the water test piece is held in the box body and is arranged on the lower main body in a covering to communicate the water outlet flow passage and the mixed water flow passage with the cold water inlet flow passage or the hot water inlet flow passage. Since the lower main body is held in the box body, is separated from cement and is quite convenient to disassemble, assemble and maintain. The embedded box can be shared by shower, bathtub and wash basin type temperature-controlled, electronic and single-handle products. The application scope is wide.

The invention discloses an engineering machinery and a telescopic boom thereof. The disclosed telescopic boom comprises a boom pin and a pin stirring mechanism; a first section of boom and a second section of boom are respectively provided with an boom pin hole; the boom pin can be installed in the first section of boom in a sliding mode; the head of a driving mechanism is provided with a telescopic cylinder pin; the pin stirring mechanism is cooperated with the boom pin; the telescopic boom is also provided with a transmission mechanism; and when the cylinder pin extends out, the transmission mechanism drives the pin stirring mechanism, so that the boom pin is pulled out from the boom pin hole of the second section of boom. When the telescopic boom is used, cylinder pin inserting action and boom pin pulling action are linked, so that a boom pin pulling driving device is not needed any more, and the structure of the head of the driving mechanism is simpler. Because the boom pin pulling driving device is not needed any more, a pipeline or a line connected with the boom pin pulling driving device is not needed anymore, thereby reducing interference between the driving mechanism and the pipeline or the line.

The invention relates to a multi-load hydraulic sensing system for single-power source and multi-system working, comprising a main liquid-control handle, an assistant liquid-control handle a load-sensitive variable pump, a load-sensing main steerer, a load-sensing assistant steerer, a front wheel steering oil cylinder, a back wheel steering oil cylinder, a front wheel hydraulic motor, a back wheel hydraulic motor and an operation actuating mechanism, wherein the load-sensitive variable pump is connected with a PVG multipath integrated valve, and the PVG multipath integrated valve is respectively connected with the main liquid-control handle and the assistant liquid-control handle, the front wheel steering oil cylinder and the rear wheel steering oil cylinder, and the operation actuating mechanism and also respectively connected with the load-sensing main steerer and the load-sensing assistant steerer through an anti-explosion two-position three-way electromagnetic valve; the load-sensing main steerer is connected with the front wheel steering oil cylinder, the load-sensing assistant steerer is connected with the back wheel steering oil cylinder, and the front wheel steering oil cylinder and the back wheel steering oil cylinder are connected through a three-position four-way electromagnetic valve; and a posture-adjusting valve and an anti-explosion two-position four-way electrohydraulic valve are arranged between the front wheel hydraulic motor and the back wheel hydraulic motor. The multi-load hydraulic sensing system can realize single-pump oil supply of a running system, a steering system and an operation actuating mechanism, and can also realize electric explosion prevention, two-way driving and all-around steering of the hydraulic system.

The invention discloses a hydraulic control system for an automatic gearbox. The hydraulic control system for an automatic gearbox comprises three oil path parts of an oil supply path, a gear shifting control oil path, a toque converter and a cooling lubricating oil path. An input end of the oil supply path is connected to an oil groove, and oil liquid is output to the gear shifting control oil path, the torque converter and the cooling lubricating oil path. The hydraulic control system for an automatic gearbox realizes control over respective gears of a six-gear automatic gearbox, and the oil liquid output by liquid control proportional valves controlled by proportional solenoid valves will not control a clutch or a brake directly, but enters a C1 interlocking valve and a C2 interlocking valve at first. The oil liquid is then output to the corresponding clutch / brake by different oil mouths of the two interlocking valves and different working positions, interlocking among respective gears is realized, and when power loss occurs, a hydraulic system will automatically select a proper gear to continue to work according to the current gear, an automobile can be rapidly driven away from a hazardous area and finished automobile safety is improved.

The invention discloses a zero-voltage conduction flyback circuit, a control method and a control circuit thereof, and the control method for the zero-voltage conduction flyback circuit is characterized in that: the zero-voltage conduction flyback circuit comprises a main switch tube, a second switch tube, a primary winding, a secondary winding and an auxiliary winding of a transformer; the secondswitch tube is connected with the auxiliary winding or the secondary winding; and in a critical conduction mode, the second switch tube is switched on after the main switch tube is switched off, andthe drain voltage of the main switch tube can be oscillated to be close to zero voltage by adjusting the switching-off moment of the second switch tube.

The invention relates to a device for interlocking a chassis vehicle with a cabinet door of a circuit breaker chamber. A front baffle plate of a positioning frame is provided with a locking plate; an elastic member is sleeved on a connector; an external supporting plate covers the locking plate and is connected with the front baffle plate; a first stop block of a lead screw position-limiting mechanism is connected with a first rotary shaft through a first connecting shaft; a second connecting shaft installed on the first rotary shaft is arranged in a spiral guide groove of a first sleeve; an offsetting spring is installed between the first rotary shaft and the first sleeve; the first sleeve in a free state drives the first stop block to be installed between the locking plate and the frontbaffle plate; a second rotary shaft of a cabinet door position-limiting mechanism is installed on the external supporting plate; a second stop block is connected with the second rotary shaft through the first connecting shaft; the second connecting shaft installed on the second rotary shaft is arranged in a spiral guide groove of a second sleeve; an offsetting spring is installed between the first rotary shaft and the second sleeve; and the second sleeve in a free state drives the second stop block to be installed in a position-limiting groove of the cabinet door baffle plate. The device forinterlocking the chassis vehicle with the cabinet door of the circuit breaker chamber has the advantages of rational and compact structure, reliability for interlocking, and reduction of production cost.

The invention discloses an air-conditioning control system of an electromobile. The control system comprises an air-conditioning compressor, a blower assembly, a transmission controller and a storage battery, and is characterized in that a heating circuit comprises a heating switch, a direct current contactor and a heating element, wherein the heating switch is controlled by a cold-hot air rotary switch; the heating switch, the coil of the direct current contactor and a fan switch are connected in series and then are connected between a power supply and an earth wire; and the heating element and a normally open point of the direct current contactor are connected in series and then are connected to two ends of the storage battery. According to the invention, the match and combination of a special compression system of the electromobile and an original air-conditioning system of a common automobile are completed, and the control on an air-conditioning refrigeration system is finished effectively; simultaneously a PTC (positive temperature coefficient) heating body is adopted, and the perfect refrigeration and heating functions are realized; the control system is used for a pure electromobile which is obtained by modifying the common automobile, the design of a circuit is simplified greatly, the control system is convenient to install and use, and the modification efficiency of the electromobile can be improved greatly; and the control system has the characteristics of simple structure, low cost, safety and reliability, and is convenient to use and install.

The invention provides a method and a system for realizing the interlocking of a phone and a card. The method comprises that: a terminal sends a personal ESN (or PESN) to the card; the card stores personal unique identification information in the terminal; and when the terminal performs authentication, a network performs the authentication by using the ESN (or PESN) of the terminal and the unique identification information of the card. The method of the invention realizes the fully interlocking of the phone and the card, namely, only the terminal in a corresponding relation stored in the network can use the card corresponding to the corresponding relation and the card in the corresponding relation can only be used on the terminal. The method of the invention utilizes conventional parameters of the terminal and the card, not only brings convenience to the related service development of operators so that confidentiality is relatively higher and users cannot cancel the interlocking even though knowing the interlocking principle of the phone and the card, but also protects the right of the operators to the largest extent.

The invention relates to the field of a high-voltage electrical apparatus, and especially relates to a circuit breaker and three-position switch interlocking device and a circuit breaker-three-position switch device. The circuit breaker and three-position switch interlocking device comprises a side plate, a tripping assembly, a circuit breaker reclosing self-locking assembly and a three-position switch interlocking assembly, wherein the tripping assembly, the circuit breaker reclosing self-locking assembly and the three-position switch interlocking assembly are arranged on the side plate. The tripping assembly comprises a closing trigger crank arm; the circuit breaker reclosing self-locking assembly comprises a reclosing locking trigger crank arm; the three-position switch interlocking assembly comprises a locking three-position trigger crank arm; the closing trigger crank arm, the reclosing locking trigger crank arm and the locking three-position trigger crank arm are coaxial, synchronous and rotary crank arms; the closing trigger crank arm is provided with a just closing position and a closing position in sequence along the closing operation action direction; and triggering time of the reclosing locking trigger crank arm and triggering time of the locking three-position trigger crank arm are before the closing trigger crank arm arrives at the just closing position. The problem that a circuit breaker and a three-position switch cannot be interlocked midway in the operation process is solved.

The invention belongs to research based on a phone card and an identity document. A passive identity document card and a phone card are integrated as one innovatively by used of modern electronics, computers, communication, face recognition and other technologies. The research comprises the implementation steps of (1) capturing a head portrait of a phone user; (2) comparing the head portrait with identity information head portrait in a phone; (3) verifying displaying results; (4) unlocking the phone; and (5) operating identity document management software. According to the invention, identity basic information and relevant information of a phone holder can be recorded, the identity information of the phone owner can be bonded and stored in the phone card, the identity document information can be managed in a fast and convenient manner by use of stored information, readout information and communication functions of the phone, a series of problems that the loss of a second-generation identity card cannot be reported, the original identity card can still be used after cancellation, and a real name system is difficult to popularize for phones are fundamentally solved, the work and lives of individual citizens can be greatly facilitated, and a great practical significance for promoting social management innovation is also achieved.

The invention relates to a gear interlocking device for an automotive transmission in automobile control structure. The gear interlocking device comprises a first stirring fork shaft group with two stirring fork shafts and a second stirring fork shaft group with a stirring fork shaft. The stirring fork shafts are arranged in parallel. A sunken part is arranged on each stirring fork shaft. A first locking arm group (410) with two rigidly-connected locking arms and a second locking arm group (420) with a locking arm are arranged between the first and second stirring fork shaft groups, are connected to a positioning block which is fixedly connected with an automobile body in a rotating way, and can synchronously and linearly slide relative to the positioning block between the first and second stirring fork shaft groups. By the technical scheme, the stirring fork shafts can be interlocked when distances between every two stirring fork shafts are long, and can be flexibly arranged; and moreover, the overall structure is simple, and machining and accuracy requirements are low.

Disclosed is an external medium voltage power supply system for a motor train unit. The external medium voltage power supply system comprises a normal external medium voltage power supply circuit and an emergency external medium voltage power supply circuit; the external medium voltage power supply system is characterized in that the two sides of an external power supply contactor are connected with an AC / DC conversion power supply module through a diode separately; and the other end of the AC / DC conversion power supply module is connected with an external medium voltage power supply through a normally-open contact of an emergency external phase sequence detection contactor. The apparatus has the following three remarkable effects: 1, the system is provided with a hard line interlocking circuit, so that vehicle safety can be ensured; when a misoperation is done by a person for external connection before falling down, it is ensured that a pantograph type current collector automatically falls down when an external power supply is not inserted in the vehicle, namely when an external key is pulled off, in order to ensure that external power supply and high voltage power supply do not supply power concurrently; 2, the external key is provided, so that only one external power supply can be connected to the whole motor train unit in order to prevent interphase short circuit of two power supplies; and 3, the emergency power supply circuit is provided, so that it is ensured that a charger can be started through an external power supply interface to charge a storage battery when the vehicle storage battery is out of power while a control power supply is not available.

The invention discloses an optical, mechanical and electrical coordination control system of ultrafast laser processing equipment. The optical, mechanical and electrical coordination control system ofthe ultrafast laser processing equipment comprises a cooperation control system, a main industrial control computer, a data control moving platform, a galvanometer, an image industrial control machine, an Ethernet switch, a laser and a visual measurement system; according to the optical, mechanical and electrical coordination control system, the Ethernet is utilized to create a local area network, the network connections among the galvanometer, a moving control platform and a visual measurement platform are established, and the individual control and cooperation control among the galvanometer, the moving control platform and the visual measurement platform are achieved. The laser is then configured into an I / O interface of the galvanometer and the moving control platform and is used for reducing instruction delay. The optical, mechanical and electrical coordination control system is suitable for the fast integration of the general moving control platform, the laser, the galvanometer and the visual measurement system, faces the traditional or ultrafast laser processing fields, and can greatly improve the systematic developing efficiency.

The invention relates to a nozzle press mounting worktable, which is provided with a baseboard, a press mounting mechanism fixed on the baseboard and an unloading mechanism. The press mounting mechanism comprises a fixed part and a moving part, wherein the fixed part is provided with a first positioning portion used for fixing press mounting parts, and the moving part is provided with a second positioning portion correspondingly arranged with the first positioning portion and used for fixing the press mounting parts. The unloading mechanism comprises a clamping mechanism and an unloading track used for conveying the press mounting parts. The clamping mechanism comprises a mechanical arm used for clamping the press mounting parts on the press mounting mechanism and a power mechanism used for controlling the mechanical arm, the mechanical arm is fixedly connected with the power mechanism, and a starting point of the unloading track is located below the moving range of the mechanical arm. The nozzle press mounting worktable leads nozzle taking steps to be mechanized, reduces work load of assembling staff, enables the assembling staff to merely need to execute one step in the whole assembling process, does not generate misoperation, and greatly improves work efficiency.

The invention discloses a motion interlocking lifting platform with a placement balance self-detection function. The motion interlocking lifting platform comprises a motion table. A power mechanism isfixedly arranged on the right end face of the motion table. A lifting mechanism is arranged on the top end face of the motion table. A first oblique press block sliding groove is formed in the motiontable. Bilaterally symmetric supporting cavities opened downwards are formed in the bottom end face of the motion table. Bilaterally symmetric main shafts are rotationally connected to the front andback end faces of the motion table. Wheels symmetric front and back are fixedly arranged on the front and rear end faces of each main shaft. The motion interlocking lifting platform is simple in structure and convenient to operate, a lifting action and a motion action of the lifting platform are interlocked through mechanical interlocking, whether the lifting platform is supported in a balanced way or not is self-detected before being lifted, and the safety of an operator in the lifting operation process is guaranteed.

The invention discloses a double-hole operating device of a C-type switch, which comprises a spring mechanism, an interlocking support frame, a mechanism main shaft, a first mechanism interlocking plate, a second mechanism interlocking plate, a third mechanism interlocking plate, an opening and closing indicator, a first gear, a first half gear, a second half gear, a first interlocking sleeve, a second interlocking sleeve, an earthed interlocking frame, an earthed interlocking bar, an earthed operating rod, an earthed operating sleeve and the like. The double-hole operating device of a C-type switch realizes the interlocking of a main operating hole and an earthed operating hole, i.e. when in operating one hole, the other hole is locked and can not be operated by gear engagement. The double-hole operating device of a C-type switch has better interlocking function, thereby greatly reducing the risk caused by misoperation, and ensuring the personal safety of users well.

The invention discloses an aligning and guiding device for an engineering tubular pile, which comprises a frame body, wherein the frame body comprises two vertical frames and a transverse frame; the two vertical frames are arranged in the front of both ends of the transverse frame; the upper part and the lower part of the frame body, namely the upper parts and the lower parts of the two vertical frames and the transverse frame are respectively provided with a plurality of regulating and positioning devices which are surrounded into a ring and uniformly distributed; and the upper part of the transverse frame of the frame body is also provided with an electric control cabinet. The device has the advantages of aligning the perpendicularity of the tubular pile, vertically guiding the tubular pile in a beaten process and ensuring the basic quality of the tubular pile.

The invention relates to a hot-blast duct compensator masonry structure of a hot-blast furnace, belonging to the technical field of hot-blast furnaces in the metallurgical industry. The masonry structure comprises a duct steel shell, an annular plate, a corrugated tube, expansion joints, a heat insulation layer, fireproof spray paint, a first heat insulation brick layer, a second heat insulation brick layer, refractory bricks, dilation joints of the first heat insulation brick layer, dilation joints of the second heat insulation brick layer, dilation joints of the refractory bricks, and special-shaped refractory bricks. According to the invention, the special-shaped refractory bricks effectively protect refractory fiber blankets filled in the dilation joints, thus preventing the refractory fiber blankets from being carried away by high-temperature high-pressure air flow in the working period of a hot-blast duct, especially in the early working stage; under the double action of the special-shaped refractory bricks and heated compaction, the refractory fiber blankets can stably work for long time and absorb heat to dilate, thus protecting the corrugated tube; the arrangement of the inverse labyrinth dilation joints is opposite to the direction of air flow, thus ensuring that the air flow is more difficult to leak into the corrugated tube and forming multiple protection on the corrugated tube; and latching of the refractory bricks and the special-shaped refractory bricks increases the overall stability of the masonry, thus ensuring the long-time stable work of the hot-blast duct.

The invention provides a fuel cell integrated metal bipolar plate assembly structure which comprises a single cell assembly. The single cell assembly comprises an anode plate, a cathode plate and a membrane electrode. Both the anode plate and the cathode plate include an electrode plate flow field region structure and an electrode plate peripheral structure. The membrane electrode is provided witha membrane electrode positioning hole. The electrode plate peripheral structures of the anode plate and the cathode plate are provided with a membrane electrode anode-side positioning column and a membrane electrode cathode-side positioning column, which match the peripheral structures, respectively, so as to realize positioning between the membrane electrode, the anode plate and the cathode plate. The membrane electrode anode-side positioning column and the membrane electrode cathode-side positioning column are provided with matched clamp groove and buckling protrusion respectively, so thatthe anode plate and the cathode plate are interlocked and clamp the membrane electrode. The electrode plate peripheral structures of the anode plate and the cathode plate are provided with matched assembly positioning hole and assembly positioning pillar. When a number of single cell assemblies are stacked, two adjacent single cell assemblies are precisely positioned, and the membrane electrode isprevented from being damaged due to misaligned assembly.

A fastener for connecting a first part (54) having a first hole to a second part (52) having a second hole, comprising a retainer (10) having at its end A radial flange (14) and a shank (16) of square or rectangular cross-section. This shank (16) can be inserted into a second hole of the second part to abut against a corresponding side of the second part. A nut (12) is at least partially received axially within the retainer and is rotatable from a first rotational position within the retainer to a second rotational position. The nut (12) has an axially drilled hole to accommodate a set screw (56) and includes on its outer side diametrically opposite wing elements (46) which, when the nut is rotated from a first rotational position to a second rotational position, the wing elements (46) ) will be pulled due to the set screw (56) resting against the outside of the second part, the head (58) of the set screw (56) pressing against the first part (54) and pressing the latter against the retainer flange.

The invention provides an electric refrigerated truck power supply system and a control method thereof, and an electric refrigerated truck. The electric refrigerated truck power supply system comprises a power cell, a storage battery, a control module and a refrigerating unit; the refrigerating unit comprises a high voltage electric appliance set and a low-voltage electric appliance set; the highvoltage electric appliance set and the low-voltage electric appliance set are powered by the power cell; a DC / DC module is installed between the power cell and the low-voltage electric appliance set;a first-level switch block is installed between the DC / DC module and the low-voltage electric appliance set; the storage battery is connected with the low-voltage electric appliance through the first-level switch block. When the DC / DC module breaks down, the control module controls the operation of the first-level switch block, so that the power battery stops supplying power to the low-voltage electric appliance set, and power is supplied to the low-voltage electric appliance set by the storage battery. The setting of the first-level switch block and the storage battery ensures that when the DC / DC module fails, the low-voltage electric appliance set can also work normally, and the quality of the loaded items will not be affected.

The embodiments of the invention provide a method for interlocking between a machine and a card, a user identification module card and a terminal, for realizing interlocking between the machine and the card and effectively guaranteeing safety of business. The method for interlocking between the machine and the card comprises the user identification module card receives the identity identification of the terminal and the user identification module card stores at least one identity identification of a legal terminal; the user identification module card is in the stored at least one identity identification of the legal terminal, the user identification module card sends to the terminal the identity identification of the user identification module card when the user identification module card has the same received identity identification, so that the terminal can confirm the user identification module card is the legal user identification module card according to the user identification. The invention can be used in mobile communication business.

The invention discloses a two-machine hot standby switching circuit. The two-machine hot standby switching circuit comprises an isolating circuit, a switching interlocking circuit and an active / standby indicating circuit, wherein the switching interlocking circuit comprises two relays, each relay comprises three contact switches, one of the three switches is normally closed and the other two of the three switches are normally open. Isolated system A active striving signals are connected to a first end of a coil of a system A relay through the normally closed switch of a system B relay, and a second end of the coil of the system A relay is connected with a system A control power supply; isolated system B active striving signals are connected to a first end of a coil of the system B relay through the normally closed switch of the system A relay, and the second end of the coil of the system B relay is connected with a system B control power supply; system A active / standby indicating signals are output to a system A and a system B and system B active / standby indicating signals are output to the system A and the system B through the normally open switches of the system A and the system relays. The two-machine hot standby switching circuit has the advantages that the circuit is simple, the quantity of the used relays is small and the cost is low; the circuit reliability is high and the isolation of the two systems is realized.

The invention discloses a charging control device, an electric vehicle and a charging control method. The charging control device comprises a change-over switch, a wireless charging module and an AC wired charging module, wherein the change-over switch is connected to a power battery and comprises a first change-over path and a second change-over path; the wireless charging module is connected to the first change-over path of the change-over switch; and the AC wired charging module is connected to the second change-over path of the change-over switch. According to the technical scheme of the charging control device disclosed by the invention, the change-over switch is additionally arranged, so that the wireless charging module and the AC wired charging module share a rectifier filter to be connected with the power battery, the production cost and the occupied space are saved; and besides, when the wireless charging module is turned on through the change-over switch, the AC wired charging module is disconnected certainly, so that the interlocking between the wireless charging module and the AC wired charging module is achieved, and potential safety hazard can be reduced.

The invention relates to the field of scaffolds for buildings, and particularly to a scaffold cross-bar used for supporting a girder formwork. The scaffold cross-bar comprises a transverse steel pipe which is provided with at least a pair of tightly supported fasteners; each tightly supported fastener comprises a top sleeve sleeved on the transverse steel pipe in a sliding manner; each top sleeve is provided with a tight support part used for tightly supporting a side vertical surface formwork of a girder; in addition, a wedge block which is fixed on the transverse steel pipe in the expansion manner is also inserted in each top sleeve. When the scaffold cross-bar is used, the transverse steel pipe can be arranged below the girder, so that the two corresponding tightly supported fasteners are respectively located at two sides of the girder, and the positions of the top sleeves are adjusted by enabling the top sleeves to slide on the transverse steel pipe; and when the tight support part of each top sleeve tightly presses the side vertical surface formwork of the girder, each top sleeve is fixed in the expansion manner by knocking each wedge block, so that the tight support of the side vertical surface formwork of the girder is realized. After the scaffold cross-bar is adopted, step-to-step fasteners adopted in the prior art can be abandoned completely, and efficiency of building construction can be improved greatly.